Roundhill Group, LLC

United States of America

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2019 1
Before 2019 44
IPC Class
F41A 5/28 - Adjustable systems 7
F41A 21/48 - Barrel mounting means, e.g. releasable mountings for replaceable barrels 5
F41A 11/02 - Modular concepts, e.g. weapon-family concepts 4
F41A 21/28 - Gas-expansion chambers; Barrels provided with gas-relieving ports 4
F41A 5/22 - Mechanisms or systems operated by propellant charge energy for automatically opening the lock gas-operated having two or more gas pistons 4
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Found results for  patents

1.

Shotgun with magazine loading system

      
Application Number 16040112
Grant Number 10670357
Status In Force
Filing Date 2018-07-19
First Publication Date 2019-01-10
Grant Date 2020-06-02
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor
  • Baker, Travis T.
  • Quackenbush, Justin C.

Abstract

A shotgun including a barrel, a receiver, a magazine well and a magazine can be provided. The barrel may include a breech end at which a chamber is provided. The receiver can include a forward end coupled to the breech end of the barrel and a first side having an ejection port. The receiver may have a bolt movable therealong, with the bolt including a stripping lug removably attached thereto. The magazine well that can be received along and mounted externally to the receiver may include an attachment portion for attaching the magazine well to the receiver, a magazine release latch, and a feed ramp. This feed ramp may include a body that is removably mounted to an existing tubular magazine of the shotg, in front of the magazine well.

IPC Classes  ?

  • F41A 11/02 - Modular concepts, e.g. weapon-family concepts
  • F41A 9/65 - Box magazines having a cartridge follower
  • F41A 9/71 - Arrangements thereon for varying capacity; Adapters or inserts for changing cartridge size or type
  • F41C 7/02 - Pump-action guns, i.e. guns having a reciprocating handgrip beneath the barrel for loading or cocking
  • F41A 9/37 - Feeding two or more kinds of ammunition to the same gun; Feeding from two sides

2.

Magazine with spacers for accommodating multiple caliber, size and/or length rounds

      
Application Number 15487793
Grant Number 10228202
Status In Force
Filing Date 2017-04-14
First Publication Date 2017-10-26
Grant Date 2019-03-12
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Jarboe, Michael Brent

Abstract

A magazine for a firearm can have a housing defining a cavity with a biased follower arranged therein. The magazine may be configured to be received within a magazine well coupled to the receiver of the firearm so that rounds of ammunition stored in the magazine can be fed into the chamber of the firearm. In addition, multiple spacers can be received within the cavity defined by the magazine housing, which spacers may be configured to change or alter a width, dimension, size, and/or configuration of the magazine housing to allow the magazine to store and feed various and/or different caliber, length, size, and/or types of ammunition.

IPC Classes  ?

  • F41A 9/71 - Arrangements thereon for varying capacity; Adapters or inserts for changing cartridge size or type
  • F41A 9/70 - Arrangements thereon for discharging, e.g. cartridge followers or discharge throats
  • F41A 9/79 - Magazines for belted ammunition

3.

Gas-operated firearm with pressure compensating gas piston

      
Application Number 15200639
Grant Number 09816768
Status In Force
Filing Date 2016-07-01
First Publication Date 2017-03-30
Grant Date 2017-11-14
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Ricks, Jonathan

Abstract

A firearm may have gas operating system that renders the firearm capable of firing a wide range of shot loads by passively or automatically compensating for different shot loads. The firearm may include a plurality of ports formed in the firearm barrel, and corresponding ports formed in a gas block of the gas operating system. The ports tap gases generated during firing which are used to cycle the firearm. When firing different cartridge loads, differing combinations of the ports are selectively at least partially blocked or otherwise obstructed by the cartridge casing according to the size of the cartridge. Additionally, the gas operating system includes compensating gas pistons with internal relief valves that can bleed off excess gas to compensate for larger shot loads regardless of the size of the cartridge.

IPC Classes  ?

  • F41A 5/26 - Arrangements or systems for bleeding the gas from the barrel
  • F41A 5/28 - Adjustable systems
  • F41A 5/22 - Mechanisms or systems operated by propellant charge energy for automatically opening the lock gas-operated having two or more gas pistons
  • F41A 3/12 - Bolt action, i.e. the main breech opening movement being parallel to the barrel axis
  • F41A 3/66 - Breech housings or frames; Receivers
  • F41A 21/28 - Gas-expansion chambers; Barrels provided with gas-relieving ports

4.

Gas vent for firearm

      
Application Number 15165589
Grant Number 09921019
Status In Force
Filing Date 2016-05-26
First Publication Date 2016-10-27
Grant Date 2018-03-20
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Stone, Jeffrey W.

Abstract

A barrel for a firearm including a chamber configured to receive a round of ammunition, and a shoulder at least partially extending from an exterior surface of the barrel. The barrel also has a gas vent feature formed in the exterior surface of the barrel to vent gases from the chamber. The gas vent feature may include at least one channel formed in the exterior surface of the barrel, and the at least one channel may have a predetermined depth and at least partially extend into the shoulder of the barrel.

IPC Classes  ?

  • F41A 21/28 - Gas-expansion chambers; Barrels provided with gas-relieving ports
  • F41A 21/48 - Barrel mounting means, e.g. releasable mountings for replaceable barrels

5.

Shotgun with magazine loading system

      
Application Number 15002080
Grant Number 10151546
Status In Force
Filing Date 2016-01-20
First Publication Date 2016-10-13
Grant Date 2018-12-11
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor
  • Baker, Travis T.
  • Quackenbush, Justin C.

Abstract

A firearm including a barrel, a receiver, a magazine well and a magazine can be provided. The barrel may include a breech end at which a chamber is provided. The receiver can include a forward end coupled to the breech end of the barrel and a first side having an ejection port. Further, the receiver may have a bolt movable therealong, with the bolt including a stripping lug removably attached thereto. The magazine well that can be received along and mounted externally to the receiver may include an attachment portion for attaching the magazine well to the receiver, a magazine release latch, and a feed ramp. This feed ramp may include a body that is removably mounted to an existing tubular magazine, in front of the magazine well. A magazine loading system for converting a conventional shotgun into a magazine loaded shotgun may further be provided.

IPC Classes  ?

  • F41A 11/02 - Modular concepts, e.g. weapon-family concepts
  • F41A 9/65 - Box magazines having a cartridge follower
  • F41A 9/71 - Arrangements thereon for varying capacity; Adapters or inserts for changing cartridge size or type
  • F41C 7/02 - Pump-action guns, i.e. guns having a reciprocating handgrip beneath the barrel for loading or cocking

6.

Method and mechanism for automatic regulation of gas flow when mounting a suppressor to a firearm

      
Application Number 14603614
Grant Number 09500423
Status In Force
Filing Date 2015-01-23
First Publication Date 2016-07-28
Grant Date 2016-11-22
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor
  • Wilkinson, Lucas T.
  • Matteson, David O.

Abstract

A gas system includes a gas block having a gas port for directing propellant gases received from a gas port of a barrel of a firearm into the gas system to cycle an auto loading feature of the firearm. A spring-loaded plunger assembly positioned within the gas block includes a plunger component having a plurality of gas ports and a plunger cap at a forward end, wherein the position of the plunger component within the gas block automatically controls an amount of gas that is allowed to enter the gas system. Mounting a suppressor to the muzzle of the barrel depresses the plunger cap and drives it linearly rearward causing the plunger component to rotate to automatically restrict the volume of propellant gases directed into the gas system through a restricted flow gas port in the plunger component.

IPC Classes  ?

  • F41A 5/26 - Arrangements or systems for bleeding the gas from the barrel
  • F41A 5/28 - Adjustable systems

7.

Gas-operated firearm with pressure compensating gas piston

      
Application Number 14803624
Grant Number 09383149
Status In Force
Filing Date 2015-07-20
First Publication Date 2016-03-24
Grant Date 2016-07-05
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Ricks, Jonathan

Abstract

A gas operating system for a firearm renders the firearm capable of firing a wide range of shot loads by passively or automatically compensating for different shot loads. The firearm includes a plurality of ports formed in the firearm barrel, and corresponding ports formed in a gas block of the gas operating system. The ports tap gases generated during firing which are used to cycle the firearm. When firing different cartridge loads, differing combinations of the ports are selectively at least partially blocked or otherwise obstructed by the cartridge casing according to the size of the cartridge. Additionally, the gas operating system includes compensating gas pistons with internal relief valves that can bleed off excess gas to compensate for larger shot loads regardless of the size of the cartridge.

IPC Classes  ?

  • F41A 5/26 - Arrangements or systems for bleeding the gas from the barrel
  • F41A 21/28 - Gas-expansion chambers; Barrels provided with gas-relieving ports
  • F41A 3/66 - Breech housings or frames; Receivers
  • F41A 3/12 - Bolt action, i.e. the main breech opening movement being parallel to the barrel axis
  • F41A 5/22 - Mechanisms or systems operated by propellant charge energy for automatically opening the lock gas-operated having two or more gas pistons

8.

Replaceable feed ramp

      
Application Number 14590370
Grant Number 09562730
Status In Force
Filing Date 2015-01-06
First Publication Date 2015-11-19
Grant Date 2017-02-07
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Stone, Jeffrey W.

Abstract

A feed ramp system for feeding cartridges into the chamber of a firearm. The feed ramp system includes a feed ramp insert having a body with at least one attachment tab projecting therefrom. The feed ramp insert is received within a mating recess formed in the receiver and is removably coupled to the receiver to enable replacement of the feed ramp insert. The feed ramp insert includes a pair of proximal ramp surfaces that align with distal ramp surfaces form at a breech end of the firearm barrel, to define a pair of feed ramps for directing cartridges into the chamber.

IPC Classes  ?

  • F41A 3/26 - Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively the locking elements effecting a rotary movement about the barrel axis, e.g. rotating cylinder bolt locks semi-automatically or automatically operated, e.g. having a slidable bolt-carrier and a rotatable bolt
  • F41A 9/55 - Fixed guiding means, mounted on, or near, the cartridge chamber
  • F41A 9/41 - Ramming arrangements the breech-block itself being the rammer pushing unbelted ammunition from a box magazine on the gun frame into the cartridge chamber
  • F41A 9/38 - Loading arrangements, i.e. for bringing the ammunition into the firing position
  • F41C 23/06 - Stocks specially adapted for recoil reduction
  • F41C 23/18 - Butts; Butt plates; Stocks characterised by the material used

9.

Portion of a firearm handguard

      
Application Number 29480159
Grant Number D0741978
Status In Force
Filing Date 2014-01-23
First Publication Date 2015-10-27
Grant Date 2015-10-27
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor
  • Shea, Kiernan
  • Matteson, David O.
  • Jiranek, Marlin R.

10.

Quick detach barrel mounting system

      
Application Number 14330443
Grant Number 09234717
Status In Force
Filing Date 2014-07-14
First Publication Date 2015-09-03
Grant Date 2016-01-12
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Jarboe, Michael Brent

Abstract

A quick-detach barrel mounting system for removing and attaching a barrel to a receiver of a firearm. The quick-detach barrel mounting system can include a barrel nut having a body defining an axial bore. A proximal end of the barrel is received at least partially through the axial bore, and the barrel nut releasably engages a front end of the receiver. A hand guard can be mounted to the receiver and can define a cutout proximate the receiver. The hand guard at least partially encloses at least a portion of the barrel and the barrel nut, and the cutout is at least partially aligned with the barrel nut. At least a portion of the barrel nut is accessible via the cutout of the hand guard for at least partially disengaging and engaging the barrel nut with the receiver when the hand guard is mounted on the receiver.

IPC Classes  ?

  • F41A 21/48 - Barrel mounting means, e.g. releasable mountings for replaceable barrels
  • F41G 11/00 - WEAPON SIGHTS; AIMING - Details of sighting or aiming apparatus; Accessories
  • F41C 23/16 - Forestocks; Handgrips; Hand guards

11.

Gas vent for firearm

      
Application Number 14543242
Grant Number 09383154
Status In Force
Filing Date 2014-11-17
First Publication Date 2015-06-18
Grant Date 2016-07-05
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Stone, Jeffrey W.

Abstract

A barrel and a barrel extension for being coupled to a firearm. The barrel extension can be threadedly engaged with a proximal end of the barrel. A chamber of the firearm can extend in at least the proximal end of the barrel. One or more channels can be formed in the exterior surface of the proximal end of the barrel and/or the interior surface of the barrel extension for providing fluid communication from the chamber to the forward end of the barrel extension between the barrel extension and the proximal end of the barrel for venting high pressure gases that may develop in the chamber.

IPC Classes  ?

  • F41A 21/28 - Gas-expansion chambers; Barrels provided with gas-relieving ports
  • F41A 21/48 - Barrel mounting means, e.g. releasable mountings for replaceable barrels

12.

Buttstock assembly

      
Application Number 14466328
Grant Number 09410764
Status In Force
Filing Date 2014-08-22
First Publication Date 2014-12-11
Grant Date 2016-08-09
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Jarboe, M. Brent

Abstract

A modular firearm comprising an adjustable modular buttstock assembly. The buttstock assembly can include a frame with a central opening. A comb assembly having a cheek piece and a butt plate assembly having a recoil pad each can be mounted to the frame by an adjustment apparatus. Each adjustment apparatus can include of a guide post and/or a threaded adjustment post each received in respective bores in the frame to adjust the positions of the cheek piece and recoil pad. The adjustment apparatus also can include a locking or engagement feature that can selectively increase the friction between the frame and the guide post and/or adjustment post, to help prevent the translation of the guide post and/or adjustment post in the bore in the frame to fix the comb assembly and butt plate assembly in desired positions with respect to the frame.

IPC Classes  ?

  • F41C 23/14 - Adjustable stock or stock parts, i.e. adaptable to personal requirements, e.g. length, pitch, cast or drop
  • F41C 23/04 - Folding or telescopic stocks or stock parts
  • F41C 23/06 - Stocks specially adapted for recoil reduction
  • F41C 23/08 - Recoil absorbing pads

13.

Firearm stock

      
Application Number 29432044
Grant Number D0716403
Status In Force
Filing Date 2012-09-13
First Publication Date 2014-10-28
Grant Date 2014-10-28
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor
  • Burt, Eric C.
  • Lessard, Ethan

14.

Elastomeric extractor member

      
Application Number 13837298
Grant Number 08887426
Status In Force
Filing Date 2013-03-15
First Publication Date 2014-09-18
Grant Date 2014-11-18
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor
  • Feese, Devin
  • Stone, Jeffrey W.

Abstract

A biasing member for a bolt assembly of a firearm is described herein. The biasing member comprises a body having a first portion configured to engage and seat within a biasing member receiving indentation of an arm of the extractor, and a second portion configured to engage and seat within a receiving area along a bolt of the firearm. The body provides a biasing force directed against the extractor arm. The body comprises an elastomeric material, and is configured such that the first and second portions provide varying levels of compression sufficient to maintain a substantially constant extractor tension between the extractor arm and a cartridge.

IPC Classes  ?

  • F41A 15/10 - Cartridge extractors, i.e. devices for pulling cartridges or cartridge cases at least partially out of the cartridge chamber; Cartridge ejectors, i.e. devices for throwing the extracted cartridges or cartridge cases free of the gun for block-action guns of sliding-block type
  • F41A 15/14 - Cartridge extractors, i.e. devices for pulling cartridges or cartridge cases at least partially out of the cartridge chamber; Cartridge ejectors, i.e. devices for throwing the extracted cartridges or cartridge cases free of the gun for bolt-action guns the ejector being mounted on, or within, the bolt
  • F16F 1/36 - Springs made of material having high internal friction

15.

Self regulating gas system for suppressed weapons

      
Application Number 13799734
Grant Number 08950313
Status In Force
Filing Date 2013-03-13
First Publication Date 2014-07-10
Grant Date 2015-02-10
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Kenney, Daniel E.

Abstract

A gas system for an autoloading firearm wherein the gas used to cycle the weapon can be restricted automatically through a mechanical shutoff actuated by the installation of a suppressor on the weapon. The gas system could be used to actuate either a piston to mechanically operate the weapon or a gas impingement mechanism wherein the gas is redirected into the bolt carrier assembly to directly actuate the unlocking and cycling of the bolt and bolt carrier group. A gas block for the firearm includes a spring-loaded plunger assembly positioned within a bore of the gas block and oriented parallel to a bore of a barrel of the firearm, the plunger assembly including a regulator plunger, a regulator bushing, a regulator spring, and a regulator cap. Mounting a suppressor over the muzzle depresses the regulator plunger driving it rearward, the rearward movement of the regulator plunger blocking one of gas ports in the gas block to automatically reduce the volume of propellant gases directed into the gas system.

IPC Classes  ?

16.

Gas cut-off system for firearms

      
Application Number 13799088
Grant Number 09212856
Status In Force
Filing Date 2013-03-13
First Publication Date 2014-06-26
Grant Date 2015-12-15
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Baker, Travis T.

Abstract

A gas cutoff system for use with a gas-operated firearm. The gas cutoff system includes a gas block affixed to the barrel and having a plurality of openings adjacent the barrel for receiving gas redirected from the barrel of the firearm upon firing. At least one gas cylinder is disposed within the gas block and includes a piston disposed within and moveable along the gas cylinder. A valve assembly is disposed within the gas cylinder adjacent to the at least one piston. The valve assembly includes a selectively closeable valve that can be actuated upon firing of the firearm when the volume/pressure of gas entering the gas block through the plurality of openings overcomes a biasing force of a spring so as to actuate movement of the valve within the gas cylinder. A portion of the valve is moved to a location blocking the openings through which the gas is entering the gas block to prevent excess gas from entering the gas operating system.

IPC Classes  ?

  • F41A 5/28 - Adjustable systems
  • F41A 5/18 - Mechanisms or systems operated by propellant charge energy for automatically opening the lock gas-operated
  • F41A 5/22 - Mechanisms or systems operated by propellant charge energy for automatically opening the lock gas-operated having two or more gas pistons

17.

Gas-operated firearm with pressure compensating gas piston

      
Application Number 13799786
Grant Number 09097475
Status In Force
Filing Date 2013-03-13
First Publication Date 2014-06-05
Grant Date 2015-08-04
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Ricks, Jonathan

Abstract

A gas operating system for a firearm renders the firearm capable of firing a wide range of shot loads by passively or automatically compensating for different shot loads. The firearm includes a plurality of ports formed in the firearm barrel, and corresponding ports formed in a gas block of the gas operating system. The ports tap gases generated during firing which are used to cycle the firearm. When firing different cartridge loads, differing combinations of the ports are selectively at least partially blocked or otherwise obstructed by the cartridge casing according to the size of the cartridge. Additionally, the gas operating system includes compensating gas pistons with internal relief valves that can bleed off excess gas to compensate for larger shot loads regardless of the size of the cartridge.

IPC Classes  ?

  • F41A 5/26 - Arrangements or systems for bleeding the gas from the barrel
  • F41A 5/22 - Mechanisms or systems operated by propellant charge energy for automatically opening the lock gas-operated having two or more gas pistons
  • F41A 5/28 - Adjustable systems
  • F41A 5/18 - Mechanisms or systems operated by propellant charge energy for automatically opening the lock gas-operated

18.

Buttstock

      
Application Number 29432716
Grant Number D0704294
Status In Force
Filing Date 2012-09-19
First Publication Date 2014-05-06
Grant Date 2014-05-06
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Jarboe, M. Brent

19.

Quick detach barrel mounting system

      
Application Number 13662236
Grant Number 08782943
Status In Force
Filing Date 2012-10-26
First Publication Date 2014-05-01
Grant Date 2014-07-22
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Jarboe, Michael Brent

Abstract

A quick-detach barrel mounting system for removing and attaching a barrel to a receiver of a firearm. The quick-detach barrel mounting system can include a barrel nut having a body defining an axial bore. A proximal end of the barrel is received at least partially through the axial bore, and the barrel nut releasably engages a front end of the receiver. A hand guard can be mounted to the receiver and can define a cutout proximate the receiver. The hand guard at least partially encloses at least a portion of the barrel and the barrel nut, and the cutout is at least partially aligned with the barrel nut. At least a portion of the barrel nut is accessible via the cutout of the hand guard for at least partially disengaging and engaging the barrel nut with the receiver when the hand guard is mounted on the receiver.

IPC Classes  ?

  • F41A 21/48 - Barrel mounting means, e.g. releasable mountings for replaceable barrels

20.

Firearm

      
Application Number 29432045
Grant Number D0702792
Status In Force
Filing Date 2012-09-13
First Publication Date 2014-04-15
Grant Date 2014-04-15
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor
  • Burt, Eric C.
  • Lessard, Ethan

21.

Firearm

      
Application Number 29432127
Grant Number D0702793
Status In Force
Filing Date 2012-09-13
First Publication Date 2014-04-15
Grant Date 2014-04-15
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor
  • Burt, Eric C.
  • Lessard, Ethan

22.

Buttstock assembly

      
Application Number 13573156
Grant Number 08844185
Status In Force
Filing Date 2012-08-27
First Publication Date 2014-03-20
Grant Date 2014-09-30
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Jarboe, M. Brent

Abstract

A modular firearm comprising an adjustable modular buttstock assembly. The buttstock assembly can include a frame with a central opening. A comb assembly having a cheek piece and a butt plate assembly having a recoil pad each can be mounted to the frame by an adjustment apparatus. Each adjustment apparatus can include of a guide post and/or a threaded adjustment post each received in respective bores in the frame to adjust the positions of the cheek piece and recoil pad. The adjustment apparatus also can include a locking or engagement feature that can selectively increase the friction between the frame and the guide post and/or adjustment post, to help prevent the translation of the guide post and/or adjustment post in the bore in the frame to fix the comb assembly and butt plate assembly in desired positions with respect to the frame.

IPC Classes  ?

  • F41C 23/14 - Adjustable stock or stock parts, i.e. adaptable to personal requirements, e.g. length, pitch, cast or drop
  • F41C 23/04 - Folding or telescopic stocks or stock parts
  • F41C 23/06 - Stocks specially adapted for recoil reduction
  • F41C 23/08 - Recoil absorbing pads

23.

Bolt assembly for firearms

      
Application Number 13826711
Grant Number 08800422
Status In Force
Filing Date 2013-03-14
First Publication Date 2014-03-06
Grant Date 2014-08-12
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor
  • Norton, Vincent
  • Baker, Travis T.

Abstract

A bolt assembly for a firearm such as an auto-loading or pump action shotgun includes a bolt body, bolt carrier and a bolt head. The bolt head is received within the bolt body and is rotatable within the bolt body to lock the bolt assembly into battery prior to firing the weapon, but does not extend from the bolt body during such rotation. The bolt carrier translates axially relative to the bolt body so as to cause rotation of the bolt head. The extractor for the firearm can be pivotally attached to the bolt body, while the ejector further can be integrated into the bolt assembly for engaging and ejecting a shell or cartridge after firing.

IPC Classes  ?

  • F41A 3/26 - Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively the locking elements effecting a rotary movement about the barrel axis, e.g. rotating cylinder bolt locks semi-automatically or automatically operated, e.g. having a slidable bolt-carrier and a rotatable bolt
  • F41A 3/00 - Breech mechanism, e.g. locks
  • F41A 3/30 - Interlocking means, e.g. locking lugs, screw threads

24.

Fire control for auto-loading shotgun

      
Application Number 13792669
Grant Number 09417019
Status In Force
Filing Date 2013-03-11
First Publication Date 2014-02-27
Grant Date 2016-08-16
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Norton, Vincent

Abstract

An auto-loading firearm includes a bolt assembly that is both automatically operable and manually operable between a forward position closing the chamber of the firearm and a rearward position opening the chamber, and a fire control mechanism. The fire control mechanism comprises a trigger plate assembly operably located between the chamber and a magazine that is capable of housing one or more additional rounds of ammunition. The trigger plate assembly includes a latch release and a carrier that is operable to lift a round from the magazine to the chamber. The fire control mechanism further includes a feed latch that is operable to release of a round from the magazine onto the carrier when disengaged by the latch release. The trigger plate assembly and the feed latch are configurable to control the release of rounds of ammunition from the magazine during manual operation of the fire control.

IPC Classes  ?

  • F41A 9/61 - Magazines
  • F41A 9/64 - Magazines for unbelted ammunition
  • F41A 3/58 - Breakdown breech mechanisms, e.g. for shotguns
  • F41A 9/18 - Movable ammunition carriers or loading trays, e.g. for feeding from magazines pivoting or swinging in a vertical plane parallel to the barrel axis mounted within a smallarm feeding from a magazine under the barrel
  • F41A 9/72 - Tubular magazines, i.e. magazines containing the ammunition in lengthwise tandem sequence

25.

Modular firearm stock system

      
Application Number 13967722
Grant Number 09239203
Status In Force
Filing Date 2013-08-15
First Publication Date 2013-12-12
Grant Date 2016-01-19
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor
  • Jarboe, Michael Brent
  • Baradat, Gregory Phillip
  • Dennison, Gregory A.

Abstract

A modular firearm is disclosed. The firearm that can be configured to operate using ammunition of different calibers via interchangeability of only a few parts. The firearm includes a foldable butt stock assembly for quickly and easily converting the firearm from an extended operating configuration to a compact transport configuration, and vice-versa. Additionally, the firearm includes a modular hand guard assembly having multiple mounting platforms for accommodating a variety of different accessories.

IPC Classes  ?

  • F41A 11/02 - Modular concepts, e.g. weapon-family concepts
  • F41A 21/48 - Barrel mounting means, e.g. releasable mountings for replaceable barrels
  • F41A 3/18 - Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively the locking elements effecting a rotary movement about the barrel axis, e.g. rotating cylinder bolt locks hand-operated
  • F41A 9/71 - Arrangements thereon for varying capacity; Adapters or inserts for changing cartridge size or type
  • F41C 23/04 - Folding or telescopic stocks or stock parts
  • F41C 23/16 - Forestocks; Handgrips; Hand guards

26.

Magazine cutoff

      
Application Number 13345256
Grant Number 08733009
Status In Force
Filing Date 2012-01-06
First Publication Date 2013-07-11
Grant Date 2014-05-27
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Ricks, Jonathan

Abstract

A magazine cutoff device for a firearm with a tube-type magazine, such as, e.g., semi-automatic shotgun. The cutoff device may be moveably mounted to accommodate at least two positions, on and off. The user may activate the cutoff, pull the bolt to the rear, eject a chambered shell, and lock the bolt to the rear while retaining any shells in the magazine.

IPC Classes  ?

  • F41A 9/18 - Movable ammunition carriers or loading trays, e.g. for feeding from magazines pivoting or swinging in a vertical plane parallel to the barrel axis mounted within a smallarm feeding from a magazine under the barrel
  • F41A 9/19 - Movable ammunition carriers or loading trays, e.g. for feeding from magazines pivoting or swinging in a vertical plane parallel to the barrel axis mounted within a smallarm feeding from a magazine mounted in the stock

27.

Recoil reducer

      
Application Number 29410211
Grant Number D0685873
Status In Force
Filing Date 2012-01-05
First Publication Date 2013-07-09
Grant Date 2013-07-09
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Baker, Travis

28.

Magazine cap retention system

      
Application Number 13272827
Grant Number 08418393
Status In Force
Filing Date 2011-10-13
First Publication Date 2013-04-16
Grant Date 2013-04-16
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Powers, Thomas P.

Abstract

A firearm and a method for configuring the firearm is described that, in one aspect, includes a tubular magazine having a mechanical connection arranged at one end, a cap having a mechanical connection and configured to cooperate with the mechanical connection arranged on the one end of the tubular magazine, a retaining mechanism arranged in the tubular magazine having a circumferential surface, the retaining mechanism having retaining mechanism locking components arranged on the circumferential surface, and the cap further including an internal peripheral surface having cap locking components arranged along the internal peripheral surface, the retaining mechanism locking components and the cap locking components configured to interact to keep the cap from rotating thereby preventing the cap from accidentally disconnecting from the tubular magazine.

IPC Classes  ?

29.

Barrel mounting and retention mechanism

      
Application Number 13155117
Grant Number 08539708
Status In Force
Filing Date 2011-06-07
First Publication Date 2012-12-13
Grant Date 2013-09-24
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor
  • Kenney, Daniel E.
  • Ronkainen, James W.
  • Matteson, David O.
  • Wilkinson, Luke T.

Abstract

A barrel mounting and retention device for attaching a barrel to a receiver of a firearm. The barrel mounting and retention device can include a barrel extension disposed at a proximal end of the barrel, with an annular collar extending from the barrel extension and defining a first clamp face. A mounting plate having a second clamp face and defining a first axial bore fits over the barrel of the firearm with the barrel extending through the first axial bore. At least a portion of the second clamp face abuts a portion of the first clamp face as the mounting plate is secured to the barrel extension for mounting and retaining the barrel in communication with the receiver of the firearm.

IPC Classes  ?

  • F41A 21/00 - Barrels or gun tubes; Muzzle attachments; Barrel mounting means

30.

Modular firearm system

      
Application Number 13337459
Grant Number 08522465
Status In Force
Filing Date 2011-12-27
First Publication Date 2012-06-28
Grant Date 2013-09-03
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor
  • Jarboe, Michael Brent
  • Baradat, Gregory Phillip
  • Dennison, Gregory A.

Abstract

A modular firearm is disclosed. The firearm that can be configured to operate using ammunition of different calibers via interchangeability of only a few parts. The firearm includes a foldable butt stock assembly for quickly and easily converting the firearm from an extended operating configuration to a compact transport configuration, and vice-versa. Additionally, the firearm includes a modular hand guard assembly having multiple mounting platforms for accommodating a variety of different accessories.

IPC Classes  ?

  • F41A 11/02 - Modular concepts, e.g. weapon-family concepts

31.

Gas block

      
Application Number 29364276
Grant Number D0661364
Status In Force
Filing Date 2010-06-21
First Publication Date 2012-06-05
Grant Date 2012-06-05
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor
  • Kenney, Daniel E.
  • Ronkainen, James W.
  • Matteson, David O.

32.

Modular firearm stock system

      
Application Number 13184501
Grant Number 08429844
Status In Force
Filing Date 2011-07-16
First Publication Date 2012-03-01
Grant Date 2013-04-30
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor
  • Dextraze, Serge
  • Morin, Sylvain
  • St. Pierre, Emmanuel
  • Vallieres, Christian
  • Durand, Ghyslain
  • Jarboe, Michael Brent
  • Baradat, Gregory Phillip
  • Dennison, Gregory A.

Abstract

A modular firearm is disclosed. The firearm that can be configured to operate using ammunition of different calibers via interchangeability of only a few parts. The firearm includes a foldable butt stock assembly for quickly and easily converting the firearm from an extended operating configuration to a compact transport configuration, and vice-versa. Additionally, the firearm includes a modular hand guard assembly having multiple mounting platforms for accommodating a variety of different accessories.

IPC Classes  ?

  • F41C 23/04 - Folding or telescopic stocks or stock parts

33.

Gas-operated firearm

      
Application Number 13250192
Grant Number 08443712
Status In Force
Filing Date 2011-09-30
First Publication Date 2012-01-26
Grant Date 2013-05-21
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Molinari, Gian Mario

Abstract

A gas operating system for a firearm renders the firearm capable of firing a wide range of shot loads by passively or automatically compensating for different shot loads. The firearm includes a plurality of ports formed in the firearm barrel, and corresponding ports formed in a gas cylinder of the gas operating system. The ports tap gases generated during firing which are used to cycle the firearm. When firing different cartridge loads, differing combinations of the ports are selectively at least partially blocked or otherwise obstructed by the cartridge casing according to the size of the cartridge.

IPC Classes  ?

34.

Gas-operated firearm

      
Application Number 11753344
Grant Number 08065949
Status In Force
Filing Date 2007-05-24
First Publication Date 2011-11-10
Grant Date 2011-11-29
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Molinari, Gian Mario

Abstract

A gas operating system for a firearm renders the firearm capable of firing a wide range of shot loads by passively or automatically compensating for different shot loads. The firearm includes a plurality of ports formed in the firearm barrel, and corresponding ports formed in a gas cylinder of the gas operating system. The ports tap gases generated during firing which are used to cycle the firearm. When firing different cartridge loads, differing combinations of the ports are selectively at least partially blocked or otherwise obstructed by the cartridge casing according to the size of the cartridge.

IPC Classes  ?

35.

Hand guard attachment system for firearms

      
Application Number 12820840
Grant Number 08726557
Status In Force
Filing Date 2010-06-22
First Publication Date 2010-12-23
Grant Date 2014-05-20
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor
  • Stone, Jeffrey W.
  • Matteson, David O.

Abstract

A hand guard attachment assembly for a firearm having a barrel and a receiver fastened to the barrel by a barrel nut. The hand guard attachment assembly includes a forearm having a monolithic mounting rail/hand guard that is removably connected to the receiver. The monolithic rail/hand guard interfaces with an integral multi-slot mounting portion of the receiver. A cinch block is mated to the slots of the receiver and held in place by the monolithic rail/hand guard. A tension block is mated at one end of the monolithic rail/hand guard and is attached to the cinch block by a fastener to securely hold the monolithic rail/hand guard in place.

IPC Classes  ?

36.

Modular barrel assembly

      
Application Number 11971402
Grant Number 07866079
Status In Force
Filing Date 2008-01-09
First Publication Date 2010-11-11
Grant Date 2011-01-11
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor
  • Keeney, Michael D.
  • Jiranek, Ii, Marlin R.

Abstract

A modular barrel assembly for firearms that includes a breech section formed from a high-strength material and a barrel section. the barrel section generally is formed separately from the breech section and can be formed from a different, lighter-weight material. Once formed, the barrel and breech sections are attached together to form the complete barrel assembly.

IPC Classes  ?

  • F41C 27/00 - SMALLARMS, e.g. PISTOLS OR RIFLES; ACCESSORIES THEREFOR - Details or attachments not otherwise provided for

37.

Gas system for firearms

      
Application Number 12818291
Grant Number 08250964
Status In Force
Filing Date 2010-06-18
First Publication Date 2010-10-07
Grant Date 2012-08-28
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Stone, Jeffrey W.

Abstract

A piston assembly is provided for a gas-operated firearm of the type having a chamber and a barrel. The piston assembly includes a gas expansion housing and a piston mounted within the gas expansion housing. An annular recess is formed in the outer wall of the piston to receive exhaust gases diverted from the barrel upon firing of the firearm. At least one longitudinally extending groove extends from the annual recess to the head of the piston and forms a pathway for diverting the exhaust gases to the head of the piston. During firing, pressurized gases are diverted into the annular recess and expand longitudinally from the annular recess to the piston head, whereupon the pressurized exhaust gas drives the gas piston rearwardly along the housing.

IPC Classes  ?

  • F41A 5/18 - Mechanisms or systems operated by propellant charge energy for automatically opening the lock gas-operated

38.

Receiver gasket

      
Application Number 11532706
Grant Number 07587851
Status In Force
Filing Date 2006-09-18
First Publication Date 2009-09-15
Grant Date 2009-09-15
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Luth, Randy E.

Abstract

A gasket designed to fit into the bottom of the lower receiver of an M16 and AR style rifle. The gasket assists in preventing debris and blown primers from inhibiting the firing motion of the trigger of the rifle. The gasket surrounds a portion of the trigger within the lower receiver without impeding the movement of the trigger. The gasket lies flat in the bottom of the lower receiver and is retained in place by the installed trigger and trigger spring.

IPC Classes  ?

  • F41A 19/00 - Firing or trigger mechanisms; Cocking mechanisms
  • F41A 17/00 - Safety arrangements, e.g. safeties

39.

Shell stripper assembly

      
Application Number 11368942
Grant Number 07533598
Status In Force
Filing Date 2006-03-06
First Publication Date 2009-04-30
Grant Date 2009-05-19
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Murphy, Randall S.

Abstract

A shell stripper assembly includes a shell stripper, a stripper guide, a stripper guide plate, and a magazine insert. The shell stripper strips the top round from the firearm magazine so that it can be picked up by the firearm breech bolt. The shell stripper slides between guide rails of the stripper guide, and its motion is controlled by the stripper guide plate.

IPC Classes  ?

  • F41A 9/00 - Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges

40.

Firing pin assembly

      
Application Number 11501612
Grant Number 07516570
Status In Force
Filing Date 2006-08-09
First Publication Date 2009-02-26
Grant Date 2009-04-14
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Stone, Jeffrey W.

Abstract

A firing pin assembly is provided that includes a firing pin and a firing pin shaft. The firing pin is received in a slot of the end of the firing pin shaft to be retained therein with a spring retaining sleeve, a main spring, and a mainspring sleeve. The firing pin is removable from the firing pin assembly and can be replaced to result in a prolonged use of the firing pin assembly. The firing pin assembly will operate as a one-piece unit when the spring retaining sleeve is oriented to hold the components securely in place.

IPC Classes  ?

  • F41A 19/13 - Percussion or firing pins, i.e. fixed or slidably- mounted striker elements; Mountings therefor

41.

Firearm with enhanced corrosion and wear resistance properties

      
Application Number 11341805
Grant Number 08112930
Status In Force
Filing Date 2006-01-27
First Publication Date 2006-11-30
Grant Date 2012-02-14
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Sietsema, Glen D.

Abstract

This invention encompasses articles, compositions, and methods that provide enhanced corrosion resistance and wear resistance to firearms, firearm components, and firearm accessories. In one aspect, for example, a substrate comprising a firearm component is coated with a first layer of a corrosion-resistant material such as a first metal, followed by a second thin film layer of an abrasion-resistant material such as a second metal, a ceramic material such as a metal nitride, diamond-like carbon material, or other materials.

IPC Classes  ?

  • F41A 21/02 - Composite barrels, i.e. barrels having multiple layers, e.g. of different materials

42.

Semi-automatic handgun, magazine, and follower

      
Application Number 11109934
Grant Number 07530191
Status In Force
Filing Date 2005-04-20
First Publication Date 2006-10-26
Grant Date 2009-05-12
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Szabo, Atilla

Abstract

Embodiments of the invention are directed to a magazine and follower assembly for use with a semi-automatic handgun. The assembly may include a magazine body configured to be received within a recess in a handgun. The magazine body has an open top end including a pair of magazine lips sized to retain cartridges within the magazine body. A follower is housed within the magazine body and is biased against the force of a compression spring. The follower has a resting face configured to accommodate the outside profile of a cartridge body and further includes a protrusion disposed along the resting face. The protrusion maintains contact between the magazine lips and an uppermost cartridge loaded within the magazine body.

IPC Classes  ?

43.

Process for imprinting a composite ventilated rib

      
Application Number 11417857
Grant Number 07334364
Status In Force
Filing Date 2006-05-04
First Publication Date 2006-09-14
Grant Date 2008-02-26
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Haskin, Andrew F.

Abstract

A method of forming a composite rib for the barrel of a firearm is provided. The method generally includes aligning composite material and a release layer and directing the combination of materials through a die. The release layer is removed from the intermediate rib leaving a three-dimensional finish formed in the surface of the rib.

IPC Classes  ?

  • F41C 27/00 - SMALLARMS, e.g. PISTOLS OR RIFLES; ACCESSORIES THEREFOR - Details or attachments not otherwise provided for
  • F41A 21/00 - Barrels or gun tubes; Muzzle attachments; Barrel mounting means

44.

Roller sear/hammer interface for firearms

      
Application Number 10973679
Grant Number 07181880
Status In Force
Filing Date 2004-10-26
First Publication Date 2005-11-10
Grant Date 2007-02-27
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor Keeney, Michael D.

Abstract

A roller sear/hammer interface for a firearm. The sear has a roller rotatably mounted between two side plates forming a portion of the sear body. As the trigger is moved, a linkage connecting the trigger and sear causes the sear to pivot rearward such that the roller engages a notched surface formed in the hammer. This rolling action releases the hammer to strike a firing pin to fire a round of ammunition. When the trigger is released, the sear roller rolls downward into an engaged and locked position within the notch formed in the hammer.

IPC Classes  ?

45.

Firearm stock connector

      
Application Number 11066021
Grant Number 07162823
Status In Force
Filing Date 2005-02-25
First Publication Date 2005-09-29
Grant Date 2007-01-16
Owner
  • ROUNDHILL GROUP, LLC (USA)
  • REM TML HOLDINGS, LLC (USA)
Inventor
  • Schoppman, Edward D.
  • Murphy, Randall S.

Abstract

A stock connector allows for secure attachment of various stocks to firearm receivers. The stocks can be changed out easily and quickly in the field, without the use of specialized tools.

IPC Classes  ?

  • F41A 21/00 - Barrels or gun tubes; Muzzle attachments; Barrel mounting means