Abstract: A composite molded plastic brake piston which comprises a phenolic resin body that is co-molded to a skin which comprises a phenolic sheet molding compound. The skin adheres to at least one surface of the article. The phenolic resins of the two compounds are cross-linked into a molded product which resists separation by mechanical, chemical or thermal methods.

Abstract: The present invention relates to a protective clip (10) that may be affixed to a motor vehicle steering linkage ball joint (7), and in particular to a clip that presents a heat shield (28) between a rubber sealing gaiter (11) surrounding the ball joint (7) and a brake disc (5), and that also covers over a slot (38) in a steering knuckle (4) above the joint (7). The protective clip 10 has a planar mid-section (24) with a hole (26) therethrough through which a ball mounting shaft (40) may pass. The heat shield (28) extends transversely away from a first edge (30) of the planar mid-section (24). A steering knuckle engaging feature (49) is proximate a second edge (32) of the planar mid-section (24) opposite the first edge (30), the engaging feature (49) being non-coplanar with the planar mid-section. A spring clip (34) extends from the second edge (32) and is concave towards the planar mid-section (24).

Abstract: Disclosed is a piston having a cylindrical body made from a thermosetting molding compound. The body has a central well and a molded-on metal cap having sides that extend downward over the exterior of the body and into the well. There is insulation under and in contact with the metal cap.

Abstract: A vehicle brake vibration-and-noise damping insert is comprised of two thin plates and an intermediate damping layer. The damping layer is vulcanized to the two metal plates. A method of producing a material web for the manufacture of this type of insert is also provided. A first sheet-metal strip is coated on one side thereof with a rubber layer, while one side of a second sheet-metal strip is coated with an adhesive. The two metal strips are passed through a band vulcanizing machine with the coated sides of the strips facing one another, so as to vulcanize the rubber layer to the two metal strips.

Abstract: The invention is in the field of heat shields for aircraft wheel and brake assemblies. More particularly, the invention relates to such heat shields having removable sections. According to an aspect of the invention, a heat shield is provided for attachment to an aircraft wheel having a hub and a tube well concentric with the hub, a web interconnecting the hub and the tube well, and a plurality of torque bars fixed to the wheel generally parallel to the axis of rotation of the wheel and spaced from the tube well. The heat shield comprises a plurality of heat shield sections to be disposed between adjacent torque bars and spaced from the tube well, and a plurality of elongate heat shield carriers to be fixed to the wheel generally parallel to the axis of rotation of the wheel and spaced from the tube well with the heat shield carriers superposing the torque bars and engaging the plurality of heat shield sections.

Abstract: A piston for use in a vehicle disc brake assembly includes a generally hollow cylindrical body having an open end and a closed end. The body is formed from a plastic material and includes inner and outer cylindrical surfaces which extend axially between the open end and the closed end. A generally cylindrical steel cover is integrally molded about the closed end and the outer surface of the body of the piston. The cover includes an end wall, an outer side wall and an open end. The end wall of the cover extends about the closed end of the body of the piston, and the outer side wall of the cover extends axially along the outer surface of the body of the piston. The outer side wall of the cover extends past the open end of the body of the piston, in the direction of the brake shoe. Accordingly, during the braking operation it is the steel cover which urges the brake shoe against the rotor, instead of the body of the piston urging the brake shoe against the rotor.

Abstract: A piston for use in a disc brake assembly includes: a hollow plastic body defining an axis and including an open end and a closed end, the body defining an inner surface and an outer surface extending axially between the open end and the closed end; and a first steel cover integrally molded about portions of the outer surface and the closed end of the body, the first cover including an outer side wall and an end wall, the outer side wall of the first cover extending axially inwardly toward the open end along a portion of the outer surface of the body, and the end wall of the first cover extending radially inwardly along a portion of the closed end of the body.

Abstract: A brake pad has a support made of two metal sheets bonded together by a damping layer. The damping layer is formed exclusively from a crosslinked plastic adhesive in a thickness of about 75 .mu.m to 100 .mu.m, and is either a peroxide-crosslinked polyacrylate or a peroxide-crosslinked silicone adhesive.

Abstract: A brake shoe assembly for a drum brake of a vehicle is improved by the addition of a moisture-impervious coating material applied to the brake shoe, and especially the brake shoe table upon which a friction liner will be removably secured. This coating material is effectively bonded to at least the portion of the outer surface of the brake shoe table which will be covered by the friction liner before the friction liner is removably secured. The moisture-impervious coating material is substantially non-adhesively bonded to said friction liner and is preferably a cross-linkable polymeric material, especially an epoxy-based adhesive.

Abstract: An apparatus which improves a conventional hydraulic brake system by locating the hydraulic brake fluid chamber sufficiently remote from the brake pads and their associated rotating brake element to prevent overheating of the brake liquid causing subsequent loss of hydraulic braking force. A communicating member is disposed between the hydraulic fluid chamber and the brake assembly which is comprised of a material possessing a low thermal conductivity.

Abstract: In order to provide a shim for preventing brake squeal in a disk brake, which can decrease high frequency noise (squealing phenomena) produced at braking, a rubber coated metal, in which a rubber layer is disposed on one surface of a metal plate is used and a pressure sensitive adhesive layer is disposed directly on the other surface of the metal plate, the pressure sensitive adhesive layer may include a primer layer on the other surface of the metal plate. The pressure sensitive adhesive layer of this shim structure serves as an adhesive portion to be stuck to a backplate of a disk brake pad. Since the pressure sensitive adhesive layer is disposed on the metal plate, the pressure sensitive adhesive layer is never peeled off from the rubber coated metal and its damping action (brake squeal preventing action) is maintained.

Abstract: A disc brake piston includes a body formed from a plastic material and a cover formed from a metallic material. The body of the piston is molded from a synthetic resin material and is generally hollow and cylindrical in shape, defining an axis and including an opened end and a closed end. The body defines an inner cylindrical surface and an outer cylindrical surface which extend axially from the opened end toward the closed end. The cover is formed from steel and is integrally molded to the body of the piston. The cover extends about the opened end of the body and extends axially inwardly toward the closed end along portions of both the inner and outer surfaces of the body.

Abstract: A multi-disc brake (80) includes a piston housing (102) and attached torque tube (94) located about an axle (87). Integrated within the piston housing (102) is a brake actuator (90). The piston housing (102) is located axially between an actuator member (98) of the brake actuator (90) and an axle sleeve (109) and radial portion 87a of the axle (87). Hydraulic actuation of the brake actuator (90) displaces axially the actuator member (98) against a stationary thrust sleeve (99) such that the piston housing (102) is compressed between the actuator member (98) and axle sleeve (109), thereby reducing torsional vibrational movement of the piston housing (102) and torque tube (94) about the axle (87).

Abstract: An improved structure for a disc brake piston heat shield adapted for use in a disc brake assembly includes a caliper provided with at least one cylindrical recess formed therein. A piston is slidably disposed in the recess. The piston includes a closed end and an open end. The open end of the piston is provided with at least a pair of projections extending therefrom. The projections define a pair of abutment surfaces and a pair of end surfaces located axially inward relative to the abutment surfaces, A pair of brake shoes are carried by the disc brake assembly and are disposed on opposite axial sides of an associated rotor. Each brake shoe includes a backing plate and a friction pad. An actuation system is carried by the caliper for selectively moving the brake shoes between a non-braking position, wherein each of the friction pads is spaced apart from the adjacent side of the rotor, and a braking position, wherein each of the friction pads frictionally engages the adjacent side of the rotor.

Abstract: A disc brake piston includes a body formed from a plastic material and a cover formed from a metallic material. The body of the piston is molded from a synthetic resin material and is generally hollow and cylindrical in shape, defining an axis and including an opened end and a closed end. The body defines an inner cylindrical surface and an outer cylindrical surface which extend axially from the opened end toward the closed end. The cover is formed from steel and is integrally molded about the open end of the body. The cover extends about the open end of the body and extends axially inwardly toward the closed end along portions of both the inner and outer surfaces of the body.

Abstract: The invention relates to a floating metal structure (11) usable in most aircraft brakes. This structure aims at better distributing the pressure applied by the jacks, actuators or cylinders (7). The structure (11) is a ring with a U-shaped section having a flat base (13) and into which are freely introduced the jacks (7) which, also ensure the centering thereof. In a first solution, the contact of said structure takes place directly between the base (13) of the U and the first disk. In a second solution, contact takes place by means of a number of support shims or blocks (18) which is equal to the total number of active and inactive jacks (7) and arranged in staggered manner with respect thereto. These shims (18) remaining effective on alternating the active and inactive jacks (7), so that they act as if the number of jacks was doubled. Moreover, the structure (11) helps to thermally protect the jacks.

Abstract: In a multi-disc brake comprising a torque tube and a piston housing having a plurality of hydraulically operated and circumferentially spaced piston cylinders a thermal isolation element is arranged to restrict heat generated by the friction discs from flowing from the torque tube to the piston housing.

Abstract: A brake pad assembly comprises a backplate, a friction lining secured to one side of the backplate and a planar dampening sheet secured to the other side of the backplate. The dampening sheet has at least one embossed projection extending from the one side thereof and the backplate has at least one recess in the side thereof secured to the dampening sheet and which is of generally the same configuration as the projection in the dampening sheet to receive the projection. The projection is partially outlined by at least one cut in the dampening sheet forming a cut edge on the projection which extends outside the plane of the dampening sheet to abut against the wall of the recess and compensate for excessive shearing forces caused between the dampening sheet and the backplate during a braking operation utilizing the brake pad assembly.

Abstract: A brake drum and wheel assembly having a reduced heat transfer coefficient having an insulating ring formed in a flange section of the wheel disposed to be clamped against a drum extension attached to a cylindrical main drum. In an alternate embodiment, the drum extension is coated with a thermal insulating material such that a layer of the insulating material is disposed between the wheel flange section and the drum extension.

Abstract: An aircraft brake assembly with stators and interleaved rotors with a piston support and cylinders mounted thereon for cooperative action by pistons slidably mounted therein for brake actuation wherein each piston has a piston head with a honeycomb insulator structure composed of cells made of longitudinally extending thin strips of deformed thin strips with non-coplaner surfaces that are parallel to the central axis with a thin cap on one of the end edges and a backup disc contacting the other end edges and to the method of making such honeycomb structure.

Abstract: A heat sink having an annular conductive section disposed between a brake drum and a wheel assembly with a plurality of convective sections extending from the conductive section through a like number of hand-hold apertures formed in the wheel assembly. In an alternative embodiment, the heat sink has a hollow section formed in each convective section extending into the conductive section where the hollow section is at least partially filled with a heat conductive material that undergoes a phase change to further enhance the heat transfer from the conductive section to the convective section.

Abstract: A brake rotor having a brake ring, first and second opposing braking surfaces, and inner and outer peripheral surfaces connecting the braking surfaces. A plurality of apertures are disposed through the brake ring and extend between the two braking surfaces. A ceramic coating, for providing thermal insulation, is disposed at least on the two braking surfaces.

Abstract: A thermal protection device includes a screen (1) and a support (2), the screen (1) for intercepting the radiation (3) from an intense heat source. The screen (1) is applied to the support (2) by elastic deformation and held thereon by exerting on a first bearing surface (4a) and on a second bearing surface (4b) forces oriented respectively along opposite directions.

Abstract: An aircraft brake (11) typically includes a torque tube (16) supported by a pedestal (24) upon an axle (18). The torque tube (16) is connected with the plurality of stators (20) which interface with a plurality of rotors (22) connected with a surrounding wheel (10). In order to improve the configuration stability of torque tube (16) during operation of the brake (11), a spacer member (40) is located between the inner diameter surface (17) of the torque tube (16) and the outer diameter surface (15) of the axle (14). The spacer member (40) has an outer diameter surface (42) which supports the inner diameter surface (17) of the torque tube (16) and an inner diameter surface (46) which is supported by the axle (14). A splined support ring (50) engage splines (47) at the inner diameter surface (46) of the spacer member (40) and is press fitted to the axle (14).

Abstract: A thermal insulating wheel spacer for placement between a vehicle brake drum and a wheel, where the spacer has a plurality of mounting holes formed within a plurality of mounting pads with scallop portions adjacent to each mounting pad. The wheel spacer is assembled in layers of materials having enhanced wear and thermal insulating properties.

Abstract: A brake pad for disc brakes is provided in which the brake pad comprises a damping plate attached to the reverse face of a lining carrier plate. The damping plate is attached to the lining carrier plate by way of projections which are molded on the lining carrier plate and extend into corresponding apertures of the damping plate. The external ends of the projections are widened so that the damping plate is pressed against the reverse face of the lining carrier plate.

Abstract: Disclosed is a friction pad of a disc brake for a vehicle. The friction pad has a lining, which contacts the brake disc with friction and is formed of a carbon composite material, and a coating layer formed of glass or a heat resistant resin on the back surface and side surfaces of the lining. The carbon composite layer is preferably a carbon-carbon composite or a glass-impregnated carbon material. Borosilicate glass is suitable as the glass.

Abstract: A disk-brake pad device includes a carbon-carbon lining pad. The disk-brake pad device attaches the pad to the caliper. At least one pad-positioning surface of the caliper has merging therefrom at least one pad-actuating piston. A first plate element (1) of heat-insulating material, called a screen element, is located against the positioning surface. At least one second element (2) of heat-insulating material, called a spacer element, of adequate thickness, having reduced frontal contacts is located against the first element (1). A carbon-carbon lining pad (3) of high-temperature friction material is located against the second element (2). The first element (1) and/or the second element (2) acts to retain the lining pad (3) and to fix the first element and/or the second element to the caliper.

Abstract: A friction pad includes a flat back plate, a friction member fixed to one surface of the back plate, a shim in the form of a thin plate attached to the other surface of the back plate, and a viscous fluid applied between the back plate and the shim. The shim is formed with semi-circular notches in the outer edge and inner edge thereof with respect to the radial direction of the disc, and the notch in the outer edge and the notch in the inner edge have the same curvature.

Abstract: The present invention relates to a brake shoe assembly with a sealing liner having a brake shoe (11) which includes a brake shoe table (13). A sealing liner (45) formed from an adhesive material is applied to the convex surface (31) of the brake shoe table (13). A friction brake liner (50) is positioned over the sealing liner and convex surface (31) of the brake shoe table (13) and is secured to the brake shoe table (13) by fasteners (61). The sealing liner forms a moisture barrier between the friction brake liner (50) and the brake shoe table (13) to retard the passage of moisture therethrough to prevent rust and corrosion of the brake shoe (11).

Abstract: A heat shield installation for a tire-supporting wheel and brake assembly having a rim member with an inner surface that surrounds a heat sink composed of stator and rotor brake discs which may extend axially beyond the rim member. A plurality of circumferentially spaced torque bars are located between the heat sink and the inner surface of the rim member with such torque bars slidably engaging notches in the outer periphery of the rotor discs. An interior heat shield is located between the inner surface and the torque bars with fasteners interconnecting such heat shield and torque bars to the rim member. An exterior heat shield of cylindrical configuration having a plurality of circumferentially spaced series of louvers is secured to the rim member to protect the interior heat shield and brake discs.

Abstract: A low temperature light weight brake rotor including an aluminum rotor having an inner section integrally formed with an outer section and a braking surface formed about the outer face of each section. A ceramic coating is adhered to each braking surface. The coating is of a consistent thickness of between 0.015 inch to 0.020 inch. Also, a plurality of circumferentially spaced radially spaced cooling apertures are arranged between the sections and act to vent heat away from the disc. This arrangement brings about a situation where braking temperatures of up to 2000.degree. F. are created on the ceramic coating while the temperature of the aluminum rotor is held below 260.degree. F. The coating consists of at least one of aluminum oxide, aluminum titanium and magnesium zirconate.

Abstract: An aircraft multiple disc and brake assembly having an axle with a cylindrical wheel member journaled thereon. The inner peripheral portion of the wheel member has a plurality of circumferentially spaced splines to support axially spaced rotor discs which are interleaved with stator discs which are splined to axially extending ribs mounted on a torque tube which in turn is connected to the axle. A piston support member is secured to the axle via a hub member and has a plurality of circumferentially spaced cylinders with a piston slidably mounted therein. One end of each piston cooperates with the receiving cylinder to define a piston chamber that permits pressurization to actuate the braking action. The other end of the piston has a pair of discs with mating spherical contoured surfaces to permit a tilting therebetween to eliminate side loading and provide even wear.

Abstract: A heat shield installation on a tire supporting wheel and brake assembly having a rim member with an inner surface that surrounds a heat sink composed of stator and rotor brake discs. A plurality of circumferentially spaced drive keys are located between the heat sink and the inner surface of the rim member with such keys slidably mounting the rotor discs. A heat shield is located between the inner surface and the drive keys with a plurality of circumferentially spaced spacers secured thereto. Fastener members interconnect the drive keys to the rim members through the spacers while securely locking the heat shield radially and axially relative to the rim member of the tire supporting wheel.

Abstract: This invention relates to a floating type automotive brake disc having a disc hub and a friction disc combined with a very small clearance therebetween. In the brake disc according to this invention, the friction disc (14) is fixed to the disc hub (10) by a collar (16) inserted through them, a connecting bolt (17) inserted through the collar (16) and a nut (18) to be fitted to the bolt (17). The collar has a annular ridge (16) on the circumference thereof at substantially the middle for defining a clearance between the disc hub (10) and the friction disc (14). The friction disc is supported between the outer lateral side (16b) of the annular ridge (16a) and the head (17a) of the connecting bolt (17). The length of the shaft (16e) protruding from the inner lateral side (16d) of the connecting bolt (17) is greater than the thickness of the disc hub (10).

Abstract: The wheel and rotor drive key assembly (10) comprises a wheel (12) having a plurality of integral torque-transmitting drive lugs (22) which extend radially inwardly from an inner surface (20) of the wheel (12) and axially across the inner surface (20) from one end to the other of the lug (22). The lug (22) has a radially inner face (24) extending axially along the lug (22) and includes a radially outwardly extending contoured opening or recess (30) defining undercut portions (34) of the drive lug (22). A complementary-shaped retention member or nut (40) is disposed therein so that laterally extending side of retainer portions (42) of the retention nut (40) engage the undercut portions (34) of the drive lug (30) in order to retain radially the retention nut (40). The retention nut (40) includes a threaded portion (46) of an opening (44) which receives a retention screw (90) disposed within an opening ( 56) of a U-shaped rotor drive key or cap member (50).

Abstract: The caliper disc brake comprises at least one hydraulic working chamber (20) intended for spacing apart from one another a piston (16) bearing on one brake shoe (12) and a caliper (18) bearing on the other brake shoe (14). The inner walls of the working chamber (20) are covered with a layer (22, 24) of a thermally insulated material.

Abstract: A disc brake assembly includes a mounting member and two brake pads mounted on the mounting member on opposite sides of a disc to be acted upon the brake pads. The brake pads are mounted on backing plates which have circumferential ends disposed in facing relationship to torsion-resisting surfaces of the mounting member. The torsion-resisting surfaces have circumferentially extending projections which engage the backing plates in a manner resisting radial outward movement of the brake pads in response to frictional braking forces.

Abstract: A multi-disc brake assembly having a plurality of interleaved stator and rotor brake discs that are cooperative with a cylindrically shaped or cone shaped heat shield that has a honeycomb open cell structure which controllably limits the radiant and convection heat energy transfer out and away from the brake discs on frictional engagement and generation of heat therefrom.

Abstract: A pair of caliper guides (56) are arranged at a brake carrier (10) in a manner so as to be protected from contamination by elastic boots (64). A floating caliper (22) is guided on the caliper guides (56) and straddles the brake disc (12) as well as a pair of brake pads (14,16). A tappet (42) is provided for brake actuation and is guided so as to be axially displaceable in the floating caliper (22) at one side of the brake disc (12). Its actuating forces are exerted through a pressure plate (54) on the adjacent brake pad (14). In the range of the caliper guides (56) the pressure plate (54) is formed with a recess (68) each in its edge for the corresponding elastic boot (64). The elastic boots (64) are covered by stiff, cup-shaped caps (66) engaging with radial clearance in a respective one of the recesses (68) formed in the edge of the pressure plate (54). A heat insulation plate (72) is positioned between the pressure plate (54) and the adjacent brake pad (41).

Abstract: The ablative bushing (40, 140, 240) is disposed between a torque tube pedestal (18) and an axle (30) of an aircraft. The ablative bushing (40, 140) encircles an axle bushing (26) located around the axle (30), so as to be disposed between the torque tube pedestal (18) and axle bushing (26). The ablative bushing (240) may also be located between a torque tube pedestal flange (114) and an axle flange (35). The ablative bushing (40, 140, 240) ablates at a predetermined temperature in order to introduce an air gap between the torque tube pedestal (18) and axle (30) to prevent excessive heat flow to the axle (30) during a rejected take-off stop.

Abstract: An improved torque lug drive for a multidisc brake and wheel assembly having greater resistance to torque loading than earlier designs at lower weight. The torque transmitting beam is mechanically secured to the radially inner surface of the wheel rim adjacent the wheel rim flange, for example, by a threaded fastener. A shear pin transmits torque load from the torque beam to a boss provided on the radially inner surface of the rim at a point between the wheel rim flange and the web of the wheel.

Abstract: A disc brake assembly (10) having an actuation piston assembly 36 which responds to a hydraulic fluid to provide a force for moving brake pads (42, 44) into engagement with a rotor (12). The actuation piston assembly (36) has an elastomeric ring (66, 166, 266, 366) through which the force is transmitted to a brake pad (42) to attenuate any vibrations that may be created during a brake application and as a result a reduction in audible sound.

Abstract: A multiple disc brake apparatus provided with at least one rotor rotatable with a vehicle wheel, a housing secured to an unrotatable portion of the vehicle, at least two pads supported by the housing and located on both sides of the rotors, a cylinder member secured to the housing, and a piston member mounted on the cylinder member to urge each pad against a frictional surface of the rotor responsive to a supply of a pressurized brake fluid to the cylinder. The cylinder member includes a main part fitted sealably in the cylinder member, a sub-part disposed between the main part and the pads, and a first heat-resistant member provided between the main part and the sub-part, in such a manner that the main part, the first heat-resistant member and the sub-part are arranged in series. The cylinder member is independently provided from the housing, and the cylinder member is fixedly secured to the housing through a second heat-resistant member.

Abstract: A generally cylindrical heat shield is provided for attachment to the wheel of an aircraft for encircling a brake disc stack. The cylindrical shield is configured from a plurality of interleaved arcuate sectors. The sectors are interconnected by means of a slip joint which allows each of the sectors a degree of lateral or circumferential movement with respect to each other to accommodate thermal expansion and contraction. Each of the sectors includes a plurality of layers, typically a pair of outer skins having an inner layer therebetween. A spaced relationship between the skins and the inner layer is maintained by spacers which laterally engage the skins, holding them in fixed spaced relationship, while allowing lateral movement at the spacers to accommodate thermal expansion and contraction. The inner layer is maintained in positional relationship with respect to the skins by spacers in one embodiment, or by detents in the skins engaging the layer in another.

Abstract: A disc brake comprising a carrier member, a disc, a pair of friction pads supported by the carrier and arranged to slide in the axial direction of the disc, one of the pads having a backing member, a caliper mounted to the carrier for straddling the disc and arranged to slide in the axial direction of the disc, the caliper having at least a cylinder portion, a piston mounted in the cylinder portion and arranged to slide in the axial direction of the disc, the piston facing one of the friction pads on the side thereof remote from the disc, a boot means for shielding the piston, a shim means disposed between the piston and the backing member, and a shielding plate formed integrally with the shim means and located between the disc and the boot means. The shielding plate includes a first portion axially extending from the shim toward the disc and a second portion radially outwardly extending from the extension of the first portion.

Abstract: A hydraulically actuated braking apparatus, for spot-type disc brakes is disclosed including a piston having an actuating end, protrudes from the brake housing and which acts on a brake pad. The piston is provided with a shoulder, and a metal ring is mounted on the piston's outside surface. An elastic folded collar is fastened behind the metal ring. The outside surface of the piston has at least one indentation of a specific shape and size in the area of the protruding end of the piston. So as to effect a tight fit of the metal ring on the piston, projections are distributed on the inside circumference of the metal ring on elastic ring elements which elements are axially bent out of the radial plane. Guide surfaces are also distributed at the inside circumference of the ring for fastening the metal ring at the piston in a predetermined position.

Abstract: The drum drive (100, 200) comprises a generally annular-shaped drum (100, 200) which extends axially within an axial opening in an inboard half (140, 240) of a wheel (130, 230). The drum drive (100, 200) has end openings (112, 114; 212, 214) at opposite ends (102, 104; 202, 204) thereof which provide access to an interior axially extending opening (122, 222) of the drum drive (100, 200). An outboard end (104, 204) of the drum drive (100, 200) includes a radially extending flange (108, 208) which defines the associated end opening (114, 214) and provides a plurality of openings (118, 218) for receiving tie bolts (150, 250) that connect the drum drive (100, 200) with the wheel (130, 230). The drum drive (100, 200) includes a plurality of circumferentially spaced-apart, axially extending splines (128, 228) which extend radially inwardly from the interior surface of the drum drive (100, 200) and into the interior axially extending opening (122, 222 ).

Abstract: A disc brake assembly includes a mounting member and two brake pads mounted on the mounting member on opposite sides of a disc to be acted upon the brake pads. The brake pads are mounted on backing plates which have circumferential ends disposed in facing relationship to torsion-resisting surfaces of the mounting member. The torsion-resisting surfaces have circumferentially extending projections which engage the backing plates in a manner resisting radial outward movement of the brake pads in response to frictional braking forces.

Abstract: An assembly comprises drive key wearplates mounted in pairs to longitudinal side surfaces of each of a plurality of wheel key bosses and retaining members are fastened transversely across the top of a boss to engage both wearplates of the pair. A heatshield is positioned within the wheel bore between adjacent wheel key bosses and its opposite lateral edges engage respective wearplates in a manner such that it may not move either axially or radially within the bore.