The self fixturing heater includes an outer casing having a central channel therein for selectively receiving and retaining in friction-fit relation an elastomeric fixture from a nutplate fastener assembly that axially aligns the self fixturing heater with a nutplate fastener assembly. The outer casing encloses a heater element generally disposed circumferentially around the central channel and includes a thermal insulated cover to direct heat energy toward a heat transfer surface that includes a thermally conductive pressure pad in engagement with a substrate underneath a baseplate of a nutplate having an adhesive bonding agent thereon, the heat transfer surface imparting heat energy to the adhesive bonding agent thereby curing the adhesive in four hours or less.
A hollow screw and related process of making is provided, wherein the hollow screw is formed from a generally circular corrosion resistant stainless steel disk cut from flat roll stock. The hollow screw includes a head and an elongated and hollow shaft having a wall thickness between about 0.2 to about 0.7 millimeters extending therefrom and defining a shank portion and a threaded portion having a plurality of threads thereon with a rotational drive mechanism configured to facilitate tightening via the threads. The process involves annealing to soften the stamped hollow screw, followed by thread rolling, and then age hardening the hollow screw. As such, the resultant hollow screw is relatively lightweight, about 50% the mass of a solid core screw made from the same material, with a sufficient thread strength to meet most aerospace applications and contributes to important aircraft fuel economy.
A sealant mold for sealing a domed nutplate unit particularly at a lower region about an adhesively attached interface with a substrate such as an aircraft fuel tank wall. The sealant mold is formed from a lightweight plastic material, and includes an inner cap in combination with an outer skirt to define a gap or trough for receiving and supporting a metered quantity of a curable sealant material. The mold is fitted onto a dome of the nutplate unit with an inner cap inboard edge landed onto a dome shoulder. The outer skirt is then displaced downwardly about the landed inner cap to extrude the sealant material about the lower region of the nutplate unit particularly such as the adhesively attached interface with the substrate. The sealant material is allowed to cure, after which the sealant mold can be stripped quickly and easily from the cured sealant material.
H04R 1/28 - Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
H05K 5/00 - Casings, cabinets or drawers for electric apparatus
4.
INSULATED AND SEALED CAP ASSEMBLY FOR A FASTENER COMPONENT
An insulated, sealed cap overlies and protects a fastener component or the like on a substrate in association with a substrate opening. The sealed cap includes an outer cap component filled partially with a selected sealant material and assembled with an inner collet sized and shaped to fit with a slip fit about the fastener component such as a nut or the like at one side of a selected substrate, such as the skin of an aircraft. An inboard edge of the inner collet seats on and substantially seals with the substrate. The outer cap component is then displaced toward the substrate to extrude the sealant material into a thin and substantially uniform layer joined with an extruded outer bead on the substrate, and then permitted to cure. Tapered ribs on the inner collet effectively lock with the outer cap component during sealant material curing and subsequently.
A low profile fixture button is provided for adhesive attachment to a substrate in a temporary or substantially permanent manner. The fixture button includes a plurality of preferably four over-center spokes substantially in a common plane and carrying a mounting plate having a pressure sensitive adhesive material thereon. The spokes are carried by an outer backstop rim, and are initially oriented with the mounting plate advanced toward the substrate. In a preferred form, the backstop rim seats within a counterbore formed in the rear side of a larger attachment adapted for low profile mounting onto the substrate. Pressing of the fixture button toward the substrate engages the advanced mounting plate with adhesive thereon with the substrate, and forces the spokes to displace over- center to a retracted position withdrawn substantially into the backstop rim and any associated larger attachment for low profile mounting onto the substrate.
An adjustable mounting bracket for secure adhesive mounting onto an exposed edge of a substrate, wherein the mounting bracket is adapted for subsequently supporting a selected structure such as tubing, wire bundles, etc., relative to the substrate. The mounting bracket includes slidably interfitting, generally L-shaped bracket members which cooperatively define a slidably overlying pair of mounting plates and an associated pair of slidably separable clamp jaw plates having inboard faces carrying a selected bonding agent and adapted to seat firmly against opposed substrate edge surfaces. A resilient fixture pin is carried by the mounting plates and can be actuated to apply a positive force urging the clamp jaw plates against the opposed surfaces of the substrate edge of the duration of a bonding agent cure time, after which the fixture pin can be forcibly removed from the mounting bracket.
An adhesive bonded attachment assembly is provided for supporting and retaining an insulation blanket on a substrate such as aircraft engine nacelle or the like. The attachment assembly includes a stud attachment having a base for adhesive bonded affixation to the nacelle substrate and a fastener element such as a threaded stud extending from the base at least partially into a grommet-lined mounting port formed in the insulation blanket. A radially enlarged, insulated cap fastener is secured to the fastener element to retain the insulation blanket on the nacelle substrate in a manner shielding surrounding structures and components from heat generated during engine operation. The insulated cap fastener projects radially beyond the associated grommet for improved heat-shielding of the adhesive bonded stud attachment, thereby safeguarding against debonding of the attachment base in response to high temperature exposure.
B32B 3/06 - Layered products essentially comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products essentially having particular features of form characterised by features of form at particular places, e.g. in edge regions for attaching the product to another member, e.g. to a support
8.
INSTALLATION TOOL FOR USE WITH A LINER SLEEVE ATTACHMENT
An installation tool for use with a liner sleeve attachment, such as a nutplate assembly for mounting onto a substrate blind side as disclosed in U.S. Patent 5,704,747. The installation tool includes retractable grip jaws for gripping and pulling a fixture pin protruding from the attachment, for initially advancing a tapered tool nose piece into deforming engagement with an attachment liner sleeve leading end to flare and/or expand the liner sleeve to lock the liner sleeve onto the substrate. Continued pulling action exerts a sufficient force to collapse a fixture pin head and thereby permit pull-removal of the fixture pin from the attachment. The nose piece is carried by a retractable inner housing normally retained in an advanced position for deforming the liner sleeve, and thereafter movable to a retracted position spaced from the liner sleeve to accommodate substantially unobstructed fixture pin separation from the attachment.
F16B 13/04 - Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
9.
PEEL PLY MASKING DEVICE FOR AN ADHESIVE BONDED ATTACHMENT
A peel ply conformable masking device for protectively overlying a pre-cleaned bonding surface of an adhesive attachment adapted for bonded affixation to a selected substrate having a bonding surface circumscribing a temporary attachment member for holding the attachment against the substrate for the duration of a bonding agent cure time The bonding surface of the adhesive attachment is pre-cleaned as by sand blasting and/or etching, and the masking device compnsing a peel-off film carrying a thin layer of a peel-off adhesive is placed thereover to prevent contamination thereof The masking device includes at least one aperture surrounding the temporary attachment member, and further includes at least one outwardly protruding and easily grasped pull tab for facilitated peel-off separation from the bonding surface immediately p꧀or to bonded affixation to the selected substrate
B32B 33/00 - Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
A standoff attachment for bonded fixation to a substrate includes a standoff post with internal nut for engaging a mating fastener used to mount a support element such as a line clamp substantially at a distal end thereof. The standoff post extends from an enlarged bond-on base and defines a hollow slotted channel of noncircular cross-section which terminates at the distal end in an in-turned flange defining an open fastener-receiving port. The nut includes a keyed rib sized and shaped for axial slide-fit reception into the slotted channel at an inboard side of the distal end flange, wherein this rib mates with the slotted channel shape to preclude substantial nut rotation. An elongated slotted plug is secured within the slotted channel to retain the nut, preferably with a minor degree of axial freedom, axially between the plug and the distal end flange.
F16M 13/00 - Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
F16B 39/10 - Locking of screws, bolts, or nuts in which the locking takes place after screwing down by a plate or ring immovable with regard to the bolt or object
An adjustable mounting bracket for secure mounting as by adhesive attachment onto an exposed edge of a substrate, wherein the mounting bracket is adapted for quick and easy subsequent mounting of a selected structure such as tubing, wire bundles, etc., relative to the substrate. The adjustable mounting bracket includes a pair of slidably interfitting, generally L-shaped bracket members which cooperatively define a slidably overlying pair of mounting plates and an associated pair of slidably separable clamp jaw plates. The slidably interfitting mounting plates accommodate adjustable spaced-apart separation of the clamp jaw plates to seat firmly against opposed surfaces of the substrate edge, such as mounting onto a rib protruding from the substrate or mounting onto an inner diameter edge of an opening formed in the substrate.
An adhesive attachment (26) is provided for securely mounting an attachment component (20) such as a threaded stud (20) or the like on the surface of a selected substrate, wherein the adhesive attachment (26) provides an electrically conductive ground path for grounding the attachment component and/or a selected structure mounted thereto to the substrate. In one preferred form, the attachment component is a threaded element (20) such as a stud or nut. Upon mounting of the attachment component on the substrate and subsequent connection of the threaded element to a mating threaded member, e.g., of the selected structure to be mounted onto the attachment component, a conductive ground pin (18) is pressed into electrical contact with the substrate for grounding the attachment component and/or the selected structure mounted thereto.
patents
