Tetra Tech, Inc.

United States of America

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IPC Class
B61K 9/08 - Measuring installations for surveying permanent way 18
B61L 23/04 - Control, warning or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route 14
G06T 7/00 - Image analysis 11
G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object 10
B61L 23/00 - Control, warning or like safety means along the route or between vehicles or vehicle trains 8
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Found results for  patents

1.

Apparatus and method for gathering data from sensors oriented at an oblique angle relative to a railway track

      
Application Number 17981581
Grant Number 11919551
Status In Force
Filing Date 2022-11-07
First Publication Date 2023-02-23
Grant Date 2024-03-05
Owner Tetra Tech, Inc. (USA)
Inventor Mesher, Darel

Abstract

A system and method for inspecting a railway track using sensors oriented at an oblique angle relative to a rail vehicle on which the system is traveling. The orientation of the sensors allows for different data to be gathered regarding a particular rail including rail design specifications (gathered based on manufacturer markings detected and analyzed by the system), rail seat abrasion values based on direct measurement of rails from the oblique angle, and other analysis of rail features including joint bars, rail welds, bond wires, rail holes, and broken rails. The use of an air blower, ducts, and one or more air distribution lids over the sensors helps remove debris from blocking the sensors and structured light generators.

IPC Classes  ?

  • B61L 23/04 - Control, warning or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
  • B61K 9/08 - Measuring installations for surveying permanent way
  • B61L 23/00 - Control, warning or like safety means along the route or between vehicles or vehicle trains
  • G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
  • G01D 5/245 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains using a variable number of pulses in a train
  • G01D 11/24 - Housings
  • G01D 11/26 - Windows; Cover glasses; Sealings therefor
  • G01S 19/48 - Determining position by combining or switching between position solutions derived from the satellite radio beacon positioning system and position solutions derived from a further system
  • G01S 19/50 - Determining position whereby the position solution is constrained to lie upon a particular curve or surface, e.g. for locomotives on railway tracks

2.

3D track assessment apparatus and method

      
Application Number 17559146
Grant Number 11399172
Status In Force
Filing Date 2021-12-22
First Publication Date 2022-04-14
Grant Date 2022-07-26
Owner Tetra Tech, Inc. (USA)
Inventor Mesher, Darel

Abstract

A 3D track assessment apparatus and method for identifying and assessing features of a railway track bed based on 3D elevation data gathered from the railway track bed.

IPC Classes  ?

  • H04N 13/243 - Image signal generators using stereoscopic image cameras using three or more 2D image sensors
  • B61K 9/08 - Measuring installations for surveying permanent way
  • G06T 7/00 - Image analysis
  • H04N 13/189 - Recording image signals; Reproducing recorded image signals

3.

System and method for generating and interpreting point clouds of a rail corridor along a survey path

      
Application Number 17494940
Grant Number 11782160
Status In Force
Filing Date 2021-10-06
First Publication Date 2022-02-03
Grant Date 2023-10-10
Owner TETRA TECH, INC. (USA)
Inventor Mesher, Darel

Abstract

An autonomous system for generating and interpreting point clouds of a rail corridor along a survey path while moving on a railroad corridor assessment platform. The system includes two LiDAR sensors configured to scan along scan planes that intersect but not at all points. The LiDAR sensors are housed in autonomously controlled and temperature controlled protective enclosures.

IPC Classes  ?

  • G01S 17/89 - Lidar systems, specially adapted for specific applications for mapping or imaging
  • G01S 17/87 - Combinations of systems using electromagnetic waves other than radio waves
  • G01S 17/86 - Combinations of lidar systems with systems other than lidar, radar or sonar, e.g. with direction finders
  • G01S 7/481 - Constructional features, e.g. arrangements of optical elements
  • G01S 7/497 - Means for monitoring or calibrating
  • B61L 25/02 - Indicating or recording positions or identities of vehicles or vehicle trains
  • G06T 7/55 - Depth or shape recovery from multiple images
  • G06T 7/73 - Determining position or orientation of objects or cameras using feature-based methods
  • H04N 23/51 - Housings
  • H04N 23/54 - Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
  • H04N 23/90 - Arrangement of cameras or camera modules, e.g. multiple cameras in TV studios or sports stadiums
  • H04N 23/698 - Control of cameras or camera modules for achieving an enlarged field of view, e.g. panoramic image capture

4.

3D track assessment apparatus and method

      
Application Number 17243746
Grant Number 11196981
Status In Force
Filing Date 2021-04-29
First Publication Date 2021-08-19
Grant Date 2021-12-07
Owner TETRA TECH, INC. (USA)
Inventor Mesher, Darel

Abstract

A 3D track assessment apparatus and method for identifying and assessing features of a railway track bed based on 3D elevation data gathered from the railway track bed.

IPC Classes  ?

  • H04N 13/243 - Image signal generators using stereoscopic image cameras using three or more 2D image sensors
  • B61K 9/08 - Measuring installations for surveying permanent way
  • G06T 7/00 - Image analysis
  • H04N 13/189 - Recording image signals; Reproducing recorded image signals

5.

System and method for generating and interpreting point clouds of a rail corridor along a survey path

      
Application Number 17076899
Grant Number 11169269
Status In Force
Filing Date 2020-10-22
First Publication Date 2021-03-11
Grant Date 2021-11-09
Owner TETRA TECH, INC. (USA)
Inventor Mesher, Darel

Abstract

An autonomous system for generating and interpreting point clouds of a rail corridor along a survey path while moving on a railroad corridor assessment platform. The system includes two rear-facing LiDAR sensors configured to scan along scan planes that intersect but not at all points. The system also includes a plurality of high-resolution cameras for gathering image data from a rail corridor. The LiDAR sensors and the high-resolution cameras are housed in autonomously controlled and temperature controlled protective enclosures.

IPC Classes  ?

  • G01S 17/89 - Lidar systems, specially adapted for specific applications for mapping or imaging
  • G01S 17/87 - Combinations of systems using electromagnetic waves other than radio waves
  • G01S 17/86 - Combinations of lidar systems with systems other than lidar, radar or sonar, e.g. with direction finders
  • H04N 5/225 - Television cameras
  • H04N 5/247 - Arrangement of television cameras
  • G06T 7/55 - Depth or shape recovery from multiple images
  • G01S 7/481 - Constructional features, e.g. arrangements of optical elements
  • G01S 7/497 - Means for monitoring or calibrating
  • B61L 25/02 - Indicating or recording positions or identities of vehicles or vehicle trains
  • H04N 5/232 - Devices for controlling television cameras, e.g. remote control
  • G06T 7/73 - Determining position or orientation of objects or cameras using feature-based methods

6.

Debris deflection and removal method for an apparatus and method for gathering data from sensors oriented at an oblique angle relative to a railway track

      
Application Number 16898544
Grant Number 11305799
Status In Force
Filing Date 2020-06-11
First Publication Date 2020-12-24
Grant Date 2022-04-19
Owner Tetra Tech, Inc. (USA)
Inventor Mesher, Darel

Abstract

A system and method for inspecting a railway track using sensors oriented at an oblique angle relative to a rail vehicle on which the system is traveling. The use of an air blower, ducts, and one or more air distribution lids over the sensors helps remove debris from blocking the sensors and structured light generators.

IPC Classes  ?

  • B61L 23/04 - Control, warning or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
  • B61L 23/00 - Control, warning or like safety means along the route or between vehicles or vehicle trains
  • G01S 19/50 - Determining position whereby the position solution is constrained to lie upon a particular curve or surface, e.g. for locomotives on railway tracks
  • B61K 9/08 - Measuring installations for surveying permanent way
  • G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
  • G01D 11/24 - Housings
  • G01D 11/26 - Windows; Cover glasses; Sealings therefor
  • G01D 5/245 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains using a variable number of pulses in a train

7.

Broken wheel detection system

      
Application Number 16940505
Grant Number 11142230
Status In Force
Filing Date 2020-07-28
First Publication Date 2020-11-26
Grant Date 2021-10-12
Owner TETRA TECH, INC. (USA)
Inventor Mesher, Darel

Abstract

A broken wheel detection system for detecting broken wheels on rail vehicles even when such vehicles are moving at a high rate of speed by determining the positions, lengths, or orientations of structured light lines projected against passing wheels.

IPC Classes  ?

  • B61L 3/00 - Devices along the route for controlling devices on the vehicle or vehicle train, e.g. to release brake, to operate a warning signal
  • B61L 23/00 - Control, warning or like safety means along the route or between vehicles or vehicle trains
  • H04N 5/225 - Television cameras
  • G06T 7/00 - Image analysis
  • G06T 7/521 - Depth or shape recovery from the projection of structured light
  • G06T 7/70 - Determining position or orientation of objects or cameras
  • G01M 17/10 - Suspensions, axles or wheels
  • G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
  • B61L 27/00 - Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
  • G01B 11/245 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures using a plurality of fixed, simultaneously operating transducers
  • B61L 9/04 - Illumination specially adapted for points, form signals, or gates electric

8.

System and method for generating and interpreting point clouds of a rail corridor along a survey path

      
Application Number 16876484
Grant Number 10908291
Status In Force
Filing Date 2020-05-18
First Publication Date 2020-11-19
Grant Date 2021-02-02
Owner TETRA TECH, INC. (USA)
Inventor Mesher, Darel

Abstract

An autonomous system for generating and interpreting point clouds of a rail corridor along a survey path while moving on a railroad corridor assessment platform. The system includes two rear-facing LiDAR sensors configured to scan along scan planes that intersect but not at all points and wherein neither scan plane intersects a main body of any rail car adjoined to a rear end of the railroad corridor assessment platform. The system also includes a plurality of high-resolution cameras for gathering image data from a rail corridor. The LiDAR sensors and the high-resolution cameras are housed in autonomously controlled and temperature controlled protective enclosures.

IPC Classes  ?

  • G01S 17/89 - Lidar systems, specially adapted for specific applications for mapping or imaging
  • G01S 17/87 - Combinations of systems using electromagnetic waves other than radio waves
  • H04N 5/225 - Television cameras
  • H04N 5/247 - Arrangement of television cameras
  • G06T 7/55 - Depth or shape recovery from multiple images
  • G06T 7/73 - Determining position or orientation of objects or cameras using feature-based methods
  • G01S 17/86 - Combinations of lidar systems with systems other than lidar, radar or sonar, e.g. with direction finders
  • G01S 7/481 - Constructional features, e.g. arrangements of optical elements
  • G01S 7/497 - Means for monitoring or calibrating
  • B61L 25/02 - Indicating or recording positions or identities of vehicles or vehicle trains
  • H04N 5/232 - Devices for controlling television cameras, e.g. remote control

9.

Autonomous track assessment system

      
Application Number 16877106
Grant Number 11377130
Status In Force
Filing Date 2020-05-18
First Publication Date 2020-11-05
Grant Date 2022-07-05
Owner Tetra Tech, Inc. (USA)
Inventor Mesher, Darel

Abstract

An autonomous railway track assessment apparatus includes: a railway track assessment platform including a boxcar including an enclosed space formed therein; one or more power sources located on the boxcar; a controller; a first sensor assembly in electronic communication with the controller oriented to capture data from the railway track; an air handling system located on the rail car, the air handling system including an air blower and a heater/chiller; a set of air ducts in fluid communication with the air handling system and the first sensor assembly for supplying heated or cooled blown air from the air from the handling system to the first sensor assembly. Data from the railway track is autonomously collected by the first sensor assembly controlled by the controller and such data is stored on the data storage device.

IPC Classes  ?

  • B61L 23/04 - Control, warning or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
  • B61L 25/06 - Indicating or recording the setting of track apparatus, e.g. of points, of signals

10.

Vertical manhole apparatus and method for providing access to leachate collection pipes in a landfill

      
Application Number 16893639
Grant Number 11131074
Status In Force
Filing Date 2020-06-05
First Publication Date 2020-10-22
Grant Date 2021-09-28
Owner Tetra Tech, Inc. (USA)
Inventor
  • Torresani, Mark
  • Kneser, Kyle

Abstract

A vertical manhole apparatus for use in a waste facility to provide access to one or more leachate collection pipe access points. The vertical manhole is stabilized using stabilizing features extending out from a vertical pipe of the vertical manhole apparatus.

IPC Classes  ?

  • E02D 29/02 - Retaining or protecting walls
  • E02D 29/12 - Manhole shafts; Other inspection or access chambers; Accessories therefor
  • E02D 29/14 - Covers for manholes or the like; Frames for covers
  • B09B 1/00 - Dumping solid waste

11.

Apparatus and method for gathering data from sensors oriented at an oblique angle relative to a railway track

      
Application Number 16889016
Grant Number 11560165
Status In Force
Filing Date 2020-06-01
First Publication Date 2020-10-08
Grant Date 2023-01-24
Owner Tetra Tech, Inc. (USA)
Inventor Mesher, Darel

Abstract

A system and method for inspecting a railway track using sensors oriented at an oblique angle relative to a rail vehicle on which the system is traveling. The orientation of the sensors allows for different data to be gathered regarding a particular rail including rail design specifications (gathered based on manufacturer markings detected and analyzed by the system), rail seat abrasion values based on direct measurement of rails from the oblique angle, and other analysis of rail features including joint bars, rail welds, bond wires, rail holes, and broken rails. The use of an air blower, ducts, and one or more air distribution lids over the sensors helps remove debris from blocking the sensors and structured light generators.

IPC Classes  ?

  • B61L 23/04 - Control, warning or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
  • B61L 23/00 - Control, warning or like safety means along the route or between vehicles or vehicle trains
  • G01S 19/48 - Determining position by combining or switching between position solutions derived from the satellite radio beacon positioning system and position solutions derived from a further system
  • G01S 19/50 - Determining position whereby the position solution is constrained to lie upon a particular curve or surface, e.g. for locomotives on railway tracks
  • B61K 9/08 - Measuring installations for surveying permanent way
  • G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
  • G01D 5/245 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains using a variable number of pulses in a train
  • G01D 11/24 - Housings
  • G01D 11/26 - Windows; Cover glasses; Sealings therefor

12.

Method for creating a data input file for increasing the efficiency of the aviation environmental design tool (AEDT)

      
Application Number 16367336
Grant Number 11269957
Status In Force
Filing Date 2019-03-28
First Publication Date 2020-10-01
Grant Date 2022-03-08
Owner TETRA TECH, INC. (USA)
Inventor
  • Karmelich, Mark
  • Dunholter, Paul
  • Ziegler, Paul

Abstract

A method of increasing the efficiency of the Aviation Environmental Design Tool (AEDT) by using a computer algorithm to generate an input file with far fewer flight tracks than would normally be required to obtain the same AEDT results using the same data pool.

IPC Classes  ?

  • G06F 16/903 - Querying
  • G08G 5/00 - Traffic control systems for aircraft
  • G06F 16/14 - File systems; File servers - Details of searching files based on file metadata
  • G06F 16/10 - File systems; File servers

13.

Wind turbine foundation and method of constructing a wind turbine foundation

      
Application Number 16880259
Grant Number 10968894
Status In Force
Filing Date 2020-05-21
First Publication Date 2020-09-10
Grant Date 2021-04-06
Owner TETRA TECH, INC. (USA)
Inventor
  • Kemp, Paul
  • Williams, Cory

Abstract

A wind turbine foundation and method for making a wind turbine foundation. The wind turbine foundation preferably includes a core member including a substantially cylindrically-shaped main body, a first outer flange extending out from the main body along an upper section of the core member, and a second outer flange extending out from the main body along a lower section of the core member, and a plurality of radial girders connected to the first outer flange and the second outer flange and radiating out from the core member.

IPC Classes  ?

  • E04H 12/08 - Structures made of specified materials of metal
  • F03D 13/20 - Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
  • E02D 27/42 - Foundations for poles, masts, or chimneys

14.

3D track assessment method

      
Application Number 16802763
Grant Number 11259007
Status In Force
Filing Date 2020-02-27
First Publication Date 2020-07-09
Grant Date 2022-02-22
Owner TETRA TECH, INC. (USA)
Inventor Mesher, Darel

Abstract

A 3D track assessment method for identifying and assessing features of a railway track bed based on 3D elevation and intensity data gathered from the railway track bed.

IPC Classes  ?

  • H04N 13/243 - Image signal generators using stereoscopic image cameras using three or more 2D image sensors
  • H04N 13/189 - Recording image signals; Reproducing recorded image signals
  • G06T 7/00 - Image analysis
  • B61K 9/08 - Measuring installations for surveying permanent way

15.

Apparatus and method for gathering data from sensors oriented at an oblique angle relative to a railway track

      
Application Number 16742057
Grant Number 10870441
Status In Force
Filing Date 2020-01-14
First Publication Date 2020-05-21
Grant Date 2020-12-22
Owner TETRA TECH, INC. (USA)
Inventor Mesher, Darel

Abstract

A system and method for inspecting a railway track using sensors oriented at an oblique angle relative to a rail vehicle on which the system is traveling. The orientation of the sensors allows for different data to be gathered regarding a particular rail including rail design specifications (gathered based on manufacturer markings detected and analyzed by the system), rail seat abrasion values based on direct measurement of rails from the oblique angle, and other analysis of rail features including joint bars, rail welds, bond wires, rail holes, and broken rails. The use of an air blower, ducts, and one or more air distribution lids over the sensors helps remove debris from blocking the sensors and structured light generators.

IPC Classes  ?

  • B61L 23/04 - Control, warning or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
  • G01S 19/50 - Determining position whereby the position solution is constrained to lie upon a particular curve or surface, e.g. for locomotives on railway tracks
  • B61L 23/00 - Control, warning or like safety means along the route or between vehicles or vehicle trains
  • B61K 9/08 - Measuring installations for surveying permanent way
  • G01D 11/26 - Windows; Cover glasses; Sealings therefor
  • G01D 5/245 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains using a variable number of pulses in a train
  • G01D 11/24 - Housings
  • G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object

16.

Wind turbine foundation and method of constructing a wind turbine foundation

      
Application Number 16591720
Grant Number 10851763
Status In Force
Filing Date 2019-10-03
First Publication Date 2020-04-09
Grant Date 2020-12-01
Owner TETRA TECH, INC. (USA)
Inventor
  • Kemp, Paul
  • Williams, Cory

Abstract

A wind turbine foundation and method for making a wind turbine foundation. The wind turbine foundation preferably includes a core member including a substantially cylindrically-shaped main body, a first outer flange extending out from the main body along an upper section of the core member, and a second outer flange extending out from the main body along a lower section of the core member, and a plurality of radial girders connected to the first outer flange and the second outer flange and radiating out from the core member.

IPC Classes  ?

  • E02D 27/42 - Foundations for poles, masts, or chimneys
  • F03D 13/20 - Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
  • E04H 12/08 - Structures made of specified materials of metal

17.

Apparatus and method for calculating plate cut and rail seat abrasion based on measurements only of rail head elevation and crosstie surface elevation

      
Application Number 16692132
Grant Number 10730538
Status In Force
Filing Date 2019-11-22
First Publication Date 2020-03-19
Grant Date 2020-08-04
Owner TETRA TECH, INC. (USA)
Inventor Mesher, Darel

Abstract

A system and method for inspecting a railway track a calculating plate cut and/or rail seat abrasion (RSA) based on rail head elevation and crosstie surface elevation measurements and an estimate of rail height.

IPC Classes  ?

  • B61L 23/04 - Control, warning or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
  • B61K 9/08 - Measuring installations for surveying permanent way
  • B61L 27/00 - Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor

18.

Broken wheel detection system

      
Application Number 16594231
Grant Number 10723373
Status In Force
Filing Date 2019-10-07
First Publication Date 2020-02-20
Grant Date 2020-07-28
Owner TETRA TECH, INC. (USA)
Inventor Mesher, Darel

Abstract

A broken wheel detection system for detecting broken wheels on rail vehicles even when such vehicles are moving at a high rate of speed.

IPC Classes  ?

  • B61L 5/00 - Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
  • G01B 11/24 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
  • B61L 23/00 - Control, warning or like safety means along the route or between vehicles or vehicle trains
  • H04N 5/225 - Television cameras
  • G06T 7/00 - Image analysis
  • G06T 7/521 - Depth or shape recovery from the projection of structured light
  • G06T 7/70 - Determining position or orientation of objects or cameras
  • G01M 17/10 - Suspensions, axles or wheels
  • G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
  • B61L 27/00 - Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
  • G01B 11/245 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures using a plurality of fixed, simultaneously operating transducers
  • B61L 9/04 - Illumination specially adapted for points, form signals, or gates electric

19.

Apparatus and method for gathering data from sensors oriented at an oblique angle relative to a railway track

      
Application Number 16255928
Grant Number 10807623
Status In Force
Filing Date 2019-01-24
First Publication Date 2019-12-05
Grant Date 2020-10-20
Owner TETRA TECH, INC. (USA)
Inventor Mesher, Darel

Abstract

A system and method for inspecting a railway track using sensors oriented at an oblique angle relative to a rail vehicle on which the system is traveling. The orientation of the sensors allows for different data to be gathered regarding a particular rail including rail design specifications (gathered based on manufacturer markings detected and analyzed by the system), rail seat abrasion values based on direct measurement of rails from the oblique angle, and other analysis of rail features including joint bars, rail welds, bond wires, rail holes, and broken rails. The use of an air blower, ducts, and one or more air distribution lids over the sensors helps remove debris from blocking the sensors and structured light generators.

IPC Classes  ?

  • B61L 23/04 - Control, warning or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
  • G01S 19/50 - Determining position whereby the position solution is constrained to lie upon a particular curve or surface, e.g. for locomotives on railway tracks
  • B61L 23/00 - Control, warning or like safety means along the route or between vehicles or vehicle trains
  • B61K 9/08 - Measuring installations for surveying permanent way
  • G01D 11/26 - Windows; Cover glasses; Sealings therefor
  • G01D 5/245 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains using a variable number of pulses in a train
  • G01D 11/24 - Housings
  • G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object

20.

Apparatus and method for calculating wooden crosstie plate cut measurements and rail seat abrasion measurements based on rail head height

      
Application Number 16127956
Grant Number 10625760
Status In Force
Filing Date 2018-09-11
First Publication Date 2019-12-05
Grant Date 2020-04-21
Owner Tetra Tech, Inc. (USA)
Inventor Mesher, Darel

Abstract

A system and method for inspecting a railway track. The system preferably includes: a processor; at least one sensor oriented to capture data of the railway track; a data storage device in electronic communication with the processor; and computer executable instructions stored on a computer readable storage medium in communication with the processor operable to: determine an elevation of a surface of a rail head of a rail located on the railway track based on a distance to the rail head from the at least one sensor, determine an elevation of a surface of a crosstie of the railway track based on a distance to a top surface of the crosstie from the at least one sensor, estimate a total rail height and underlying rail support, and calculate a crosstie wear value based on the determined rail head surface elevation, crosstie surface elevation, and estimated total rail height and underlying rail support.

IPC Classes  ?

  • B61L 23/04 - Control, warning or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
  • B61K 9/10 - Measuring installations for surveying permanent way for detecting cracks in rails or welds thereof
  • G01S 17/88 - Lidar systems, specially adapted for specific applications
  • G01S 19/13 - Receivers

21.

Light emission power control apparatus and method

      
Application Number 16458488
Grant Number 10728988
Status In Force
Filing Date 2019-07-01
First Publication Date 2019-11-21
Grant Date 2020-07-28
Owner TETRA TECH, INC. (USA)
Inventor Mesher, Darel

Abstract

A system and method for adjusting light emitter output for a railway track inspection system based on data feedback from one or more devices.

IPC Classes  ?

  • B61L 23/04 - Control, warning or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
  • H05B 47/105 - Controlling the light source in response to determined parameters
  • G01B 11/30 - Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
  • G01B 11/24 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
  • B61L 15/00 - Indicators provided on the vehicle or vehicle train for signalling purposes

22.

3D track assessment method

      
Application Number 16516659
Grant Number 10616556
Status In Force
Filing Date 2019-07-19
First Publication Date 2019-11-14
Grant Date 2020-04-07
Owner TETRA TECH, INC. (USA)
Inventor Mesher, Darel

Abstract

A 3D track assessment method is disclosed for identifying and assessing features of a railway track bed based on 3D elevation and intensity data gathered from the railway track bed.

IPC Classes  ?

  • H04N 13/243 - Image signal generators using stereoscopic image cameras using three or more 2D image sensors
  • G06T 7/00 - Image analysis
  • B61K 9/08 - Measuring installations for surveying permanent way
  • H04N 13/189 - Recording image signals; Reproducing recorded image signals

23.

3D track assessment method

      
Application Number 16516708
Grant Number 10616558
Status In Force
Filing Date 2019-07-19
First Publication Date 2019-11-14
Grant Date 2020-04-07
Owner TETRA TECH, INC. (USA)
Inventor Mesher, Darel

Abstract

A 3D track assessment method is disclosed for identifying and assessing features of a railway track bed based on 3D elevation and intensity data gathered from the railway track bed.

IPC Classes  ?

  • H04N 13/189 - Recording image signals; Reproducing recorded image signals
  • B61K 9/08 - Measuring installations for surveying permanent way
  • H04N 13/243 - Image signal generators using stereoscopic image cameras using three or more 2D image sensors
  • G06T 7/00 - Image analysis

24.

3D track assessment method

      
Application Number 16516722
Grant Number 10582187
Status In Force
Filing Date 2019-07-19
First Publication Date 2019-11-14
Grant Date 2020-03-03
Owner TETRA TECH, INC. (USA)
Inventor Mesher, Darel

Abstract

A 3D track assessment method is disclosed for identifying and assessing features of a railway track bed based on 3D elevation and intensity data gathered from the railway track bed.

IPC Classes  ?

  • H04N 13/243 - Image signal generators using stereoscopic image cameras using three or more 2D image sensors
  • H04N 13/189 - Recording image signals; Reproducing recorded image signals
  • B61K 9/08 - Measuring installations for surveying permanent way
  • H04N 13/00 - PICTORIAL COMMUNICATION, e.g. TELEVISION - Details thereof
  • G06T 7/00 - Image analysis

25.

3D track assessment method

      
Application Number 16516686
Grant Number 10616557
Status In Force
Filing Date 2019-07-19
First Publication Date 2019-11-14
Grant Date 2020-04-07
Owner TETRA TECH, INC. (USA)
Inventor Mesher, Darel

Abstract

A 3D track assessment method is disclosed for identifying and assessing features of a railway track bed based on 3D elevation and intensity data gathered from the railway track bed.

IPC Classes  ?

  • H04N 13/243 - Image signal generators using stereoscopic image cameras using three or more 2D image sensors
  • G06T 7/00 - Image analysis
  • B61K 9/08 - Measuring installations for surveying permanent way
  • H04N 13/189 - Recording image signals; Reproducing recorded image signals

26.

Vertical manhole apparatus and method for providing access to leachate collection pipes in a landfill

      
Application Number 16163027
Grant Number 10753062
Status In Force
Filing Date 2018-10-17
First Publication Date 2019-04-18
Grant Date 2020-08-25
Owner TETRA TECH, INC. (USA)
Inventor
  • Torresani, Mark
  • Kneser, Kyle

Abstract

A vertical manhole apparatus for use in a waste facility to provide access to one or more leachate collection pipe access points. The vertical manhole is stabilized using stabilizing features extending out from a vertical pipe of the vertical manhole apparatus.

IPC Classes  ?

  • E02D 29/12 - Manhole shafts; Other inspection or access chambers; Accessories therefor
  • E02D 29/14 - Covers for manholes or the like; Frames for covers
  • B09B 1/00 - Dumping solid waste
  • E02D 29/02 - Retaining or protecting walls

27.

Broken wheel detection system

      
Application Number 15902465
Grant Number 10435052
Status In Force
Filing Date 2018-02-22
First Publication Date 2018-08-23
Grant Date 2019-10-08
Owner TETRA TECH, INC. (USA)
Inventor Mesher, Darel

Abstract

A broken wheel detection system for detecting broken wheels on rail vehicles even when such vehicles are moving at a high rate of speed.

IPC Classes  ?

  • B61L 9/04 - Illumination specially adapted for points, form signals, or gates electric
  • B61L 23/00 - Control, warning or like safety means along the route or between vehicles or vehicle trains
  • H04N 5/225 - Television cameras
  • G06T 7/00 - Image analysis
  • G06T 7/521 - Depth or shape recovery from the projection of structured light
  • G06T 7/70 - Determining position or orientation of objects or cameras
  • G01M 17/10 - Suspensions, axles or wheels
  • G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
  • B61L 27/00 - Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
  • G01B 11/245 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures using a plurality of fixed, simultaneously operating transducers

28.

Light emission power control apparatus and method

      
Application Number 15850294
Grant Number 10349491
Status In Force
Filing Date 2017-12-21
First Publication Date 2018-08-02
Grant Date 2019-07-09
Owner TETRA TECH, INC. (USA)
Inventor Mesher, Darel

Abstract

A system and method for adjusting light emitter output for a railway track inspection system based on data feedback from one or more sensors. The system includes: a power source; a light emitting apparatus emitting light energy toward a railway track; a 3D sensor acquiring three-dimensional data of the railway track; a shaft encoder emitting pulses at a rate that corresponds to a speed of the railway track vehicle; and an algorithm operable on processor to: analyze the three-dimensional data from the 3D sensor; receive pulses from the shaft encoder; and adjust a light emitter control output value based on the analyzed three-dimensional data and the received pulses. A controller in communication with the processor is configured to control the light intensity of the light emitting apparatus in response to the light emitter control output value.

IPC Classes  ?

  • B61K 9/10 - Measuring installations for surveying permanent way for detecting cracks in rails or welds thereof
  • H05B 37/02 - Controlling
  • G01B 11/30 - Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
  • B61L 23/04 - Control, warning or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
  • G01B 11/24 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
  • B61L 15/00 - Indicators provided on the vehicle or vehicle train for signalling purposes

29.

Protective shroud for enveloping light from a light emitter for mapping of a railway track

      
Application Number 15810742
Grant Number 10384697
Status In Force
Filing Date 2017-11-13
First Publication Date 2018-03-22
Grant Date 2019-08-20
Owner TETRA TECH, INC. (USA)
Inventor Mesher, Darel

Abstract

A protective shroud for enveloping light radiating from a light emitter used with a sensor system for mapping of a railway track. The protective shroud includes: a rigid body having a frame and at least one opaque panel connected to the frame, the rigid body defining at least a first portion of a light radiation zone; and a skirt formed of high density fibers extending from adjacent a bottom edge of the at least one opaque panel to adjacent a ground surface.

IPC Classes  ?

  • B61K 9/08 - Measuring installations for surveying permanent way
  • B61K 13/00 - Other auxiliaries or accessories for railways

30.

Sensor synchronization apparatus and method

      
Application Number 15813847
Grant Number 10322734
Status In Force
Filing Date 2017-11-15
First Publication Date 2018-03-22
Grant Date 2019-06-18
Owner TETRA TECH, INC. (USA)
Inventor Mesher, Darel

Abstract

A system and method for inspecting a railway track bed using a plurality of sensors that are synchronized for rapid interrogation of a railway track bed while the sensors are in motion at a high rate of speed.

IPC Classes  ?

  • G01B 11/24 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
  • B61L 23/04 - Control, warning or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
  • G01B 21/04 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
  • G01B 11/245 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures using a plurality of fixed, simultaneously operating transducers
  • G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object

31.

Light emission power control apparatus and method

      
Application Number 15453087
Grant Number 09950720
Status In Force
Filing Date 2017-03-08
First Publication Date 2017-07-20
Grant Date 2018-04-24
Owner Tetra Tech, Inc. (USA)
Inventor Mesher, Darel

Abstract

A system and method for adjusting light emitter output for a railway track inspection system based on data feedback from one or more sensors.

IPC Classes  ?

  • B61L 23/04 - Control, warning or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
  • H05B 37/02 - Controlling
  • G01B 11/30 - Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces

32.

Light emission power control apparatus and method

      
Application Number 15291335
Grant Number 09860962
Status In Force
Filing Date 2016-10-12
First Publication Date 2017-02-02
Grant Date 2018-01-02
Owner TETRA TECH, INC. (USA)
Inventor Mesher, Darel

Abstract

A system and method for adjusting light emitter output for a railway track inspection system based on data feedback from one or more sensors.

IPC Classes  ?

  • B60Q 1/26 - Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
  • H05B 37/02 - Controlling
  • B61L 23/04 - Control, warning or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
  • G01B 11/30 - Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
  • G01N 21/25 - Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
  • B61K 9/08 - Measuring installations for surveying permanent way

33.

3D track assessment system and method

      
Application Number 14725490
Grant Number 10362293
Status In Force
Filing Date 2015-05-29
First Publication Date 2016-08-25
Grant Date 2019-07-23
Owner TETRA TECH, INC. (USA)
Inventor Mesher, Darel

Abstract

A 3D track assessment system for identifying and assessing features of a railway track bed based on 3D elevation and intensity data gathered from the railway track bed.

IPC Classes  ?

  • H04N 13/02 - Picture signal generators
  • H04N 13/00 - PICTORIAL COMMUNICATION, e.g. TELEVISION - Details thereof
  • G06T 7/00 - Image analysis
  • B61K 9/08 - Measuring installations for surveying permanent way
  • H04N 13/243 - Image signal generators using stereoscopic image cameras using three or more 2D image sensors
  • H04N 13/189 - Recording image signals; Reproducing recorded image signals

34.

Sensor synchronization apparatus and method

      
Application Number 14724890
Grant Number 09849895
Status In Force
Filing Date 2015-05-29
First Publication Date 2016-07-21
Grant Date 2017-12-26
Owner TETRA TECH, INC. (USA)
Inventor Mesher, Darel

Abstract

A system and method for inspecting a railway track bed using a plurality of sensors that are synchronized for rapid interrogation of a railway track bed while the sensors are in motion at a high rate of speed.

IPC Classes  ?

  • G01J 3/30 - Measuring the intensity of spectral lines directly on the spectrum itself
  • B61L 23/04 - Control, warning or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
  • G01B 21/04 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
  • G01B 11/245 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures using a plurality of fixed, simultaneously operating transducers
  • G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object

35.

Light emission power control apparatus and method

      
Application Number 14724925
Grant Number 09618335
Status In Force
Filing Date 2015-05-29
First Publication Date 2016-07-21
Grant Date 2017-04-11
Owner TETRA TECH, INC. (USA)
Inventor Mesher, Darel

Abstract

A system and method for adjusting light emitter output for a railway track inspection system based on data feedback from one or more sensors.

IPC Classes  ?

  • H05B 37/02 - Controlling
  • G01B 11/30 - Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
  • B61K 9/00 - Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
  • B61K 9/08 - Measuring installations for surveying permanent way

36.

Protective shroud for enveloping light from a light emitter for mapping of a railway track

      
Application Number 14724884
Grant Number 09849894
Status In Force
Filing Date 2015-05-29
First Publication Date 2016-07-21
Grant Date 2017-12-26
Owner TETRA TECH, INC. (USA)
Inventor Mesher, Darel

Abstract

A protective shroud is provided for enveloping light radiating from a light emitter used with a sensor system for mapping of a railway track. The protective shroud includes: a rigid body having a frame and at least one opaque panel connected to the frame, the rigid body defining at least a first portion of a light radiation zone; a skirt formed of high density fibers extending from adjacent a bottom edge of the at least one opaque panel to adjacent a ground surface; at least one light emitter connected to the rigid body adjacent a top edge of the rigid body to emit light radiation into the light radiation zone; and at least one sensor connected to the rigid body adjacent the top edge of the rigid body to sense the light emitted from the at least one light emitter.

IPC Classes  ?

  • B61K 9/00 - Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
  • B61K 13/00 - Other auxiliaries or accessories for railways
  • B61K 9/08 - Measuring installations for surveying permanent way

37.

Method of chemical treatment of soils containing hazardous substances susceptible to nucleophillic attack

      
Application Number 12495430
Grant Number 08178743
Status In Force
Filing Date 2009-06-30
First Publication Date 2010-03-18
Grant Date 2012-05-15
Owner Tetra Tech, Inc. (USA)
Inventor
  • Britto, Ronald
  • Patel, Madhukant
  • Spangberg, Mikael L.
  • Arnseth, Richard W.
  • Bogle, Franklin R.

Abstract

A method for remediating hazardous materials susceptible to nucleophillic attack is disclosed wherein sodium hydroxide is applied to a treatment zone in situ for raising the pH of the treatment zone to at least about 12.5 so that alkaline hydrolysis effectively breaks down the hazardous substance by replacing a leaving group with a nucleophile. The method is well suited for in situ use in the vadose zone to treat contaminated soil and groundwater.

IPC Classes  ?

  • A62D 3/36 - Detoxification by using acid or alkaline reagents
  • A62D 101/06 - Explosives, propellants or pyrotechnics, e.g. rocket fuel or napalm