Abstract: An anti-dust and cooling cover adapted for being positionable between a wheel and a brake assembly of a vehicle and being in rotation with the wheel and the brake assembly is disclosed. The cover includes a plate and a wall, and is adapted for substantially surrounding the assembly. The plate has an outer surface, an inner surface, a perimeter, a plurality of holes, and an opening. When the cover is positioned between the wheel and the assembly, the outer surface of the plate is adjacent to the wheel while the inner surface of the plate is adjacent to the assembly. The wall has an outer surface, an inner surface, a plurality of openings along the wall, and a plurality of louvers fixed along the outer surface of the wall. The wall projects perpendicularly from the plate along the perimeter of the plate to form the cover.
Abstract: A stationary disc for use in a wet disc brake assembly includes a plurality of holes drilled through the disc. The holes change the mass of the disc, and thus change the frequency of the entire disc brake assembly. This portion of the invention is particularly useful to modify the frequency such that it is not approximately equal to the frequency of an associated stationary member. In addition, the holes may be plugged with a material that becomes viscous at expected operational temperatures of the brake. This is valuable to provide a vibration dampener, that inherently becomes actuated when the brake heats.
Abstract: An apparatus of reducing unwanted brake noise has a ring damper affixed around a periphery of brake drum in a drum brake system in a manner that permits relative motion and slippage between the ring damper and the brake drum when the brake drum vibrates during braking. In a preferred embodiment, the ring damper is an almost circular ring that is inserted in a groove formed in the periphery of the brake drum. The ring damper is held in place by the groove itself and by the interference pre-load or pre-tension between the ring damper and the brake drum.
Abstract: A disc or drum brake member is usually connected to the flange of the bearing of a motor vehicle wheel; possible manufacturing errors in the flange of the bearing, and/or the brake member cause, on tightening the wheel to the flange, deformations in the bearing tracks and the active surfaces of the brake member; to avoid this, an elastically-yielding connection element is interposed, connected to the bearing on one side and the brake member on the other side, and constituted by a bell of sheet metal, dimensioned to present a high torsional rigidity associated with a limited axial rigidity to absorb and neutralise the tensions produced on tightening the screws holding the wheel to the flange of the bearing, even in the presence of manufacturing errors on the corresponding facing surfaces of the parts to be joined.
Abstract: A dust shield for the inboard side of a brake assembly of a vehicle wheel end is formed from a pair of planar members which are shaped and adapted to be fitted together to form an annular disc having an external diameter and an internal diameter. An internal periphery is defined by the internal diameter which preferably includes a flanged surface for affixing the annular disc to the wheel end. The pair of planar members are semicircular annular portions, having an arcuate outer edge and an inner edge, the inner edge comprising two straight portions with an intermediate semicircular portion. Complementary means, preferably sets of corresponding tabs and mating slots, for affixing the first and second planar members to each other to form the annular disc are provided on the inner edges of the planar members.
Abstract: A dust cover for placement between a vehicle wheel and a vehicle hub includes an outer perimeter, a central protrusion defining an opening for receiving a spindle of the vehicle hub and a plurality of lug openings, and a concave intermediate portion extending radially between the central protrusion and the perimeter. The intermediate portion has an outboard side surface configured to engage inboard sides of wheel spokes when the dust cover is mounted between the wheel and the hub of the vehicle. Fins are preferably defined on an inboard side surface of the intermediate portion. At least part of the outboard side surface is colored to provide a desired appearance between the wheel spokes at an outboard side of the wheel.
Abstract: Brake rotors each having a brake ring, first and second opposing braking surfaces, and inner and outer peripheral surfaces connecting the braking surfaces. A plurality of apertures may be disposed through the brake ring, extending between the two braking surfaces. A ceramic coating, for providing thermal insulation, is disposed at least on the two braking surfaces. In one preferred embodiment, the brake ring is formed from a composition comprising a substantial proportion of titanium.
Abstract: A brake rotor includes a radially inner hub or hat section having a central mounting face for mounting the rotor on an associated drive member, with an outer friction portion extending from the cylindrical hat wall. The outer friction portion includes a pair of opposite, flat annular friction rings adapted to interface with associated friction members. The outer friction portion of the rotor further includes a core extending radially outwardly from the cylindrical hat wall of the hat section. A layer of a sound dampening material is secured between the pair of outer friction ring sections and the core. The rotor of the invention transmits less noise than conventional rotors.
Abstract: An apparatus for reducing unwanted brake noise has a ring damper affixed around a periphery of a brake rotor in a disk brake system in a manner that permits relative motion and slippage between the ring damper and the rotor when the rotor vibrates during braking. In a preferred embodiment, the ring damper is disposed in a groove formed in the periphery of the disk and is pre-loaded against the rotor both radially and transversely. The ring damper is held in place by the groove itself and by the interference pre-load or pre-tension between the ring damper and the disk brake rotor.
Abstract: A wheel dust filter including a central mounting plate having a central mounting hole formed therethrough and a plurality of lug apertures formed through the mounting plate and spaced around the central mounting hole; a circular frame rim having four sequentially spaced, rim filter receiving channels; four radially projecting frame rim supports each having two rim support filter receiving channels, each rim support being in connection between the frame rim and the central mounting plate in a manner to define four filter apertures; and four filter elements constructed from open cell foam, each filter element being positioned within one of the four filter apertures in a manner such that portions of the perimeter edge of each filter are positioned within a rim filter receiving channel and two rim support filter receiving channels.
Abstract: A mounting arrangement of a rust preventive cover which improves a mounting operation of the rust preventive cover by enabling a visual check of a condition of engagement between the rust preventive cover and a dust cover. The rust preventive cover covers a disk rotor provided in a disk brake for a vehicle. The rust preventive cover is mounted to a dust cover provided on an inner side of the disk rotor with respect to the vehicle. A plurality of protruding portions protrude inwardly from a wall of the rust preventive cover. An opening is formed in each of the protruding portions. An engaging portion is formed on an outer end of the dust cover so that the engaging portion engages with the opening.
Abstract: A disc brake apparatus comprising an annular brake disc carried by a wheel hub rotatably mounted on an axle, the brake disc being constructed of circular friction plates spaced by a plurality of vanes extending radially along an inner face of the friction plates for enhancing flow of air past the disc and for enhancing dissipation of heat from the disc. A caliper brake assembly is mounted on a stationary support, the caliper brake assembly including a caliper housing, a pair of pistons mounted in the caliper housing and a diaphragm mechanism mounted adjacent and engaging the pistons. A brake pad assembly including brake pads is mounted adjacent to the pistons on the caliper housing and a source of pressurized air communicating fluid pressure from an outside source to the caliper assembly causes an application of force to the brake pad assembly by the pistons so that the brake pads engage with opposite radial faces of the brake disc.
Abstract: The present invention relates to ring brake arrangements and in particular to an effective arrangement for cooling of the brake. Heat is effectively rendered from the ring braking member by a fanned hub support arrangement which transfers the heat energy to an axial air flow which is pumped through the center of the brake. In addition heat is transferred to the brake caliper support bracket from the brake caliper. The brake caliper support bracket is located across the air flow which serves to cool the same. This structure is particularly well suited for high brake demand requirements where heat build up causes problems or reduces braking efficiency. The brake can also be used or can assist brake for trucks where the brake is located on the drive shaft.
Abstract: A brake mechanism for selectively stopping and permitting rotation of a shaft journaled in a motor frame, the brake mechanism comprising: a brake hub secured to the shaft for rotation therewith, the hub including a plurality of first splines each having a first width in the circumferential direction of the hub and at least one second spline having a second width in the circumferential direction of the hub and greater than the first width, and a friction disk surrounding the hub for rotation therewith, the friction disk including a pair of opposed friction surfaces and having therein an aperture extending between the friction surfaces for receiving the hub, the aperture including spline recesses for receiving the hub splines and disk splines which mate with the hub splines and which provide for rotation of the friction disk with the hub; and brake disk engagement structure mounted for movement toward and away from the friction disk.
Abstract: A backing plate is formed by way of a liquid metal forging process or a die-casting process by using an aluminum alloy or an aluminum-based composite material. Essential portions to which forces are applied are formed with a large thickness, and the remaining portions with a small thickness. In addition, as another embodiment, iron pieces are embedded in portions to which forces are applied or which are liable to be worn.
April 13, 1992
Date of Patent:
April 26, 1994
Akebono Brake Industry Co., Ltd., Akebono Research and Development Centre, Ltd.
Abstract: The present invention relates to a vehicle brake and hub comprising a ring braking member having braking surfaces both to the interior and exterior of the member in combination with a cast hub which includes centrally disposed aligned bearing ports for receiving bearings. The cast hub includes an outwardly exposed securing surface which cooperates with the ring braking member to effect securement of the braking member to the casting and in a manner to accommodate heat transfer therebetween. The cast hub includes intermediate the securing surface and the align ports, fan blades which cause during rotation of the hub an axial flow of air to move across the bearing ports and to extract heat from the fan blades and the securing surface. The fan blades collectively interconnect and structurally secure the securing surface and the bearing ports.
Abstract: An elongate chain member having first and second ends is arranged for biased securement relative to the first and second ends for mounting peripherally about a brake rotor during a training procedure to dampen vibrations and audible noise. The invention is arranged to further include vibration dampener blocks within individual links of the chain member.
Abstract: A composite brake drum for motor vehicle applications incorporating an embedded annular ring insert. The annular ring is positioned within a casting cavity to define the surfaces of a labrynth groove at the open rim of the brake drum. The labrynth groove defines a region for a backing plate flange to define a labrynth seal to prevent entry of debris into the brake drum. By defining the labrynth groove using an annular ring inserted within the mold, the post-casting machining requirements are significantly reduced. Moreover, the presence of a steel ring in the rim of the brake drum provides structural benefits. The annular ring further preferably incorporates locating features to assure accurate positioning within the casting mold cavity.
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: A vehicular brake material collection system collects brake material dust particles emanating from both the brake friction material and the brake rotary member in a disc brake or a drum brake. The system includes a particle collection chamber around and/or suction nozzles in proximity to the friction material, the chamber and/or nozzles being connected to a suction system that carries such particles into a filter or separator as the vehicle operates. The particles are thereby collected for later safe removal and disposal.
Abstract: A carbon composite aircraft brake disc (10, 50, 60, 110, 120) is manufactured to include internally an insert member (12, 14, 18, 24, 28, 32, 36, 42, 52, 115, 125) which effects positive vibration damping for the disc (10, 50, 60, 110, 120) during operation of the brake (100). The insert member (12, 14, 18, 24, 28, 32, 36, 42, 52, 115, 125) may be a graphite material, paper, or cloth material which is introduced into the interior of material utilized for manufacturing the carbon composite aircraft disc (10, 50, 60, 110, 120). After manufacturing of the brake disc (10, 50, 60, 110, 120) is completed, the brake disc comprises a single integral carbon composite brake disc (10, 50, 60, 110, 120) having disposed completely internally therein the insert member which provides a discontinuity that effects efficiently positive vibration damping of the disc (10, 50, 60, 110, 120) during operation of the aircraft brake (100) in which the disc is located.
February 14, 1991
Date of Patent:
September 1, 1992
David R. Snyder, Lawrence E. McAllister, Jaring V. Veen
Abstract: A vehicle brake caliper with a piston having a cavity is provided. A phase change material is inserted within the piston cavity wherein an increase in heat energy into the piston due to an application of the brake piston causes the brake piston temperature to increase and then to stabilize by heat energy absorption by the phase change material during its change of state.
Abstract: A cover to enclose the adjustment screw or nut as well as to cover the locking sleeve of a brake slack adjuster. The cover is held in place by an elastic band which extends horizontally around the brake slack adjuster and has enlargements that engage the cover and hold it firmly in place against the slack adjuster. The cover is easily removable when it is desired to make adjustments, yet it fully protects the slack adjuster from unwanted elements.
Abstract: Abraded dust arising during operation of a disc brake and having the effect of contaminating the environment may be collected and stored in a container of the disc brake according to the invention. This container should be large enough to enable it to accumulate as much abraded dust as is generated in the course of the lifetime of a pair of brake shoes. The container preferably includes a housing embracing one part of the brake disc, and a filter disposed between the housing and the brake disc. The filter is constructed of several layers of the same type or of different types and includes an arrangement adapted to guidedly introduce into the filter the air stream carrying the dust abraded off the brake components during the operation of the brake. In a filter made of two layers, these layers may be held to advantage fastened in their place by a flow guide grating or lattice adapted to guide the air stream with abraded dust in its flow into the filter.
Abstract: A ventilated disk used in automobiles and industrial vehicles includes a pair of mutually opposing disk portions, a plurality of radially extending ribs integrally formed with the disk portions and interposed therebetween, and at least one annular damping member. Formed in each rib is at least one radially extending oblong hole which passes through the rib in the circumferential direction. The oblong holes in the respective ribs form at least one circular array along a circular whose center is the center of the disk. The annular damping member(s) extends/extend through the oblong holes forming the annular array(s) and is in contacting engagement with the outer end portion and side portion of each ablong hole.
Abstract: An improved drum-type brake of the cam actuated type incorporating a formed return spring. The return spring is anchored relative to the backing plate in such a way that it cannot move circumferentially or axially but its flexing action is not interferred with. The arrangement for fixing the intermediate portion of the return spring to the backing plate also affords a means for affixing a dust shield to the backing plate. The cooperation of the return spring with the brake shoe and the mounting of brake shoes holds the brake shoes parallel to the backing plate and facilitates servicing.
Abstract: The torque variation absorbing device comprises a first flywheel, a second flywheel, a spring mechanism, a damping and torque limiting mechanism and a hysteresis mechanism. The hysteresis mechanism comprises a friction plate and a cone spring interposed between the first and second flywheels. The friction plate comprises a friction lining and a ring plate fastened to the friction lining. The ring plate has a connecting element to be connected with the first or second flywheel. A space is formed between the friction lining and the connecting element, and therefore, when the friction lining material is fastened, such as by hot-pressing or adhesive, to the ring plate, the space prevents friction lining material from flowing out before hardening and adhesive agent from spreading. In this arrangement of the device, when the friction force of the friction plate has worn the hysteresis mechanism is able to obtain a stable hysteresis.
Abstract: An anti-lock modulator unit is mounted adjacent to a front wheel fork of a motor cycle by a mounting plate which is secured to the axle. A drive pinion for the unit may be driven either directly, or through a belt drive, from a pinion which, in turn, is driven from the hub of the wheel, with the pinions located within a sealing recess between the plate and the casing.
Abstract: A generally hat-shaped disc for a disc brake system is provided with an inner cylindrical surface serving as the drum of a drum in hat parking brake. A unitary backing plate supports the parking brake assembly and provides integral mounting parts for the fist type sliding caliper of the disc brake assembly.
Abstract: A disk brake comprising of a disk hub adapted to be mounted to a wheel; a plurality of annularly shaped rotors or disks; a support for mounting the rotors to the disk hub such that the rotors rotate with disk hub and are free to slide in a first direction substantially perpendicular to the direction of rotation; a pair of opposing situated brake pads, one associated with each rotor, and a device for urging the brake pads into frictional engagement with the rotors. Specially shaped liners interposed grooves of the hub and teeth of the rotors. A second set of liners is fitted between a brake caliper and the brake pads.
Abstract: An inertia damper having a mounting base to be mounted on a rotary shaft and an inertia weight component which is coupled to the mounting base through a vibration absorbing layer, the vibration absorbing layer being made of a gel material with a penetration valve of approximately 50 to 200. The inertia weight component is adhered to one surface of the vibration absorbing layer and the other surface of the vibration absorbing layer is adhered to the mounting base of the rotary shaft. A vibration wave generated at the rotary shaft side is dispersedly absorbed by deformation of gel material which forms the vibration absorbing layer and a vibratory component can be removed from a braking motion.
Abstract: A backing plate assembly for a drum brake includes a first part adapted for attachment to a vehicle frame and a second part releasably coupled to the first part. The second part is made of a material that effects substantial noise reduction in the assembly and the second part is tightly frictionally coupled to the first part. The second part sees no braking torque and is coupled to a reinforced portion of the first part.
Abstract: An arrangement for supplying cooling air to a brake disk of a front wheel brake comprises an air guiding duct that is developed to be partially flexible and, on the inlet side, has an air opening in the front end of a motor vehicle and, on the outlet side, has another air opening that is directed at the brake disk. Two air inlet openings in a brake disk guard plate are opposite said air opening and form a separate transversely directed air guiding system to the brake disk. The air guiding duct is provided with several rigid duct portions that are held so that they are be fixed at the vehicle, namely at the vehicle body, as well as at the wheel, namely at the wishbone, as well as adjacent to the brake disk at a guard plate. They are each connected with one another via flexible intermediate duct portions, in which case the rigid duct portions can be moved relative to one another together with their assorted vehicle components.
July 23, 1987
Date of Patent:
February 21, 1989
Dr. Ing. h.c.F. Porsche Aktiengesellschaft
Wolfgang Moedinger, Michael Preiss, Reinhard Lechner
Abstract: A brake noise reduction system (84) which is particularly adapted for use with the hydrostatic transmissions of vehicles such as skid-steer loaders, includes a fixed caliper assembly (86) and multiple brake disc assemblies (66) that are individually connected to the transmission. The caliper assembly (86) includes a bore (96) guiding the brake pucks (98) into selective engagement with the brake disc assemblies (84) responsive to a manual cam actuation. Each brake disc assembly (66) includes a resilient damper ring (152) secured between a retainer plate (154) and a disc plate (150) to reduce rattling of the assembly and help to reduce overall noise of the hydrostatic tranmission. The brake pucks (98) are actuated by a manual lever (132) connected to a rotatable cam (112) associated with an axial plunger (120).
July 10, 1987
Date of Patent:
January 10, 1989
Austoft Inc. (U.S.A.)
Glenn G. Kanengieter, David E. Stomberg
Abstract: Multiple disc brake comprising a first rotary disc fixed to a hub connected to a rotating member to be braked and at least one second rotary disc capable of sliding axially relative to the hub and to the first disc, while at the same time being made integral in terms of rotation with the first disc. The connection between the second disc (2) and the hub (3) is made by way of at least two axially sliding shoes (22) which are uniformly distributed over a circle and which are each accommodated in an axial receptacle (23) of a cross-section matching that of the shoe (22). The invention is used on a multiple disc brake for motor vehicles.
Abstract: A brake pad (34) has a rear surface (46) for support on an actuating member (32,64) of a disc brake and a braking surface (56) constituted by friction material (38). At least one hole (48) is arranged in the brake pad (34) at right angles with respect to the rear surface (46) to guide the brake pad (34) on a guide pin (60). A protective sleeve (54) for the guide pin (60) extends coaxially with the hole (48) in a direction towards the plane of the braking surface (56). The protective sleeve (54) is made of a material which wears down together with the friction material (38) and it is embedded, at least for part of its length, in the friction material (38).
Abstract: An anti-squeal system for a wheel assembly having a brake drum and a tire rim mounted in radial spaced relationship is provided with a separate wedge assembly inserted between the brake drum and the tire rim. The wedge assembly has a pair of pads separated by an inclined block which is slidably movable against the pads to force the pads radially outwardly from each other, to exert a selective pressure simultaneously on both the brake drum and tire rim.
Abstract: A removable disk for an annular casing in a turbomachine is disclosed. The disk is coaxial with the casing and slideably engagable with the casing in ambient conditions. The disk radially contacts the casing during operation so as to provide increased stiffness to the casing.
Abstract: A disc brake (10) having friction pads (42) and (44) whose arcuate foot prints (80, 82, 84) on a rotor (12) is les than a nodal diameter of a frequency that would create an undesirable noise during a brake application.
Abstract: A vibration dampener for dampening vibration in a brake rotor comprising two elongated, flexible, stretchable, tubular members, one of which is shorter than the other. Weights are attached to the two members. Links connect the two members end-to-end in a closed loop capable of being stretched over the periphery of a relatively large diameter brake rotor. The links are releasable so that the shorter tubular member may be removed and the ends of the longer tubular member connected together in a closed loop capable of being stretched over the periphery of a smaller diameter brake rotor.
Abstract: A brake disc assembly with fasteners for securing the disc to a wheel, together with spacers associated with the fasteners for allowing the disc limited axial play relative to the wheel, there being a holder on the disc having surfaces between which the spacers are gripped.
Abstract: A passive treadmill having a governor mounted upon one end of a treadmill roller to adjustably limit the rate of speed of the treadmill belt. Resilient flexible rotating springs flex due to the centrifugal force developed during rotation, the magnitude of the centrifugal force being a function of the linear speed of the treadmill belt. Arcuate shaped brake pads mounted on integral projections of the flexible springs move into sliding engagement with an annular stationary surface to limit the linear speed of the treadmill belt. A rotatably mounted cam is manually adjustable to adjust the spacing between the aforesaid slidably engagable surfaces to adjust the operating speed. A stabilizing ring arranged between the governor springs prevents the projections from resonant non-uniform flexing.Support rollers rollingly support the treadmill belt, and are rotatably mounted within elongated openings provided in each of a pair of mounting rails.
Abstract: Opposite ends of a silencer band having a plurality of weights attached thereto are coupled together by selective engagement of a clip member and one of the silencer band weights. To effect such engagement, the clip member comprises a connection portion including a pair of first leg members and an interconnecting first bight portion which together define a loop. Instead of being riveted to the silencer band, the clip member is also fixedly attached to another one of the silencer band weights by an attachment portion. The attachment portion includes second and third leg members each extending from one of the end portions of the first leg members and arranged in predetermined spaced apart parallel relation one to another. A fourth leg member reversely depends from the third leg member and defines a second bight portion.
Abstract: A shopping cart or the like having supporting wheels, one or more of which has a non-rotating detenting element rotatably engaged by rollers of elastomeric material carried by the wheel. Detenting formations on the element yieldably brake the wheel in different rotated positions to restrain free movement of the cart from a parked condition while permitting intentional movement of the cart with a minimum of resistance.
Abstract: Applicant has provided a method for making a vibration damper for damping harmonic vibrations in brake resurfacing operations made up of an elastic tube with slugs of heavy ductile material in it. The slugs are approximately the same diameter as the inside diameter of the tubing and are held in place in the tubing by frictional force or by cement. One slug is used to join the adjacent ends of the tubing. The loop formed by the tubing is placed on a brake drum or disc brake rotor during resurfacing operations. The slugs are coated with liquid cement which lubricates them to reduce friction in getting them into place. The end slug functions to hold the tube ends together and also to function as one of the weights.
Abstract: A front brake apparatus in a motorized three-wheeled vehicle of the type that a wheel hub supported rotatably on a front wheel axle is provided with a brake drum fixed thereto. A brake panel fixed to the front wheel axle is so provided as to be positioned axially outside the brake drum. The brake panel is provided with brake shoes arranged to be brought into internal contact with the brake drum. The invention is characterized in that the brake panel is provided with a drum cover which extends to cover a surrounding portion of the brake drum and serves to tightly seal the surrounding portion through a seal member. The seal member is positioned in an inside space defined by a wheel rim attached to the wheel hub.
Abstract: A cooling device is provided for a vehicle having disc brakes which are disposed within a wheel rim cover portion of the vehicle's wheels. One type of disc brake for which the cooling device is designed is that type having generally radially extending internal air ducts between its friction rings through which air can flow for cooling the brake. The air is supplied to the brake through overflow ducts in the vehicle's wheel hub, and is conducted via a guide device from the inside of the wheel, through the brake unit. The guide device includes an air guide housing which surrounds the brake disc generally on all sides in a close, spaced relation to the disc. First and second external air ducts are formed between a wall of the housing and the friction rings of the brake disc. The housing includes an outer member having at least two influx openings. The influx openings conduct air, from inside the wheels, to the overflow ducts in the wheel hub, the external ducts, and the internal ducts.
June 14, 1984
Date of Patent:
November 4, 1986
Dr. Ing. H.c.F. Porsche Aktiengesellschaft
Abstract: A shielded disc brake system for motorcycles having structure for inducing radial air flow past the brake disc. The device includes an annular passageway between the hub and the shield which may include a centrifugal fan positioned therein. The fan may include passageways between vanes longitudinally aligned with radial passages in the brake disc. The disc itself is mounted about its periphery on bosses extending from the hub. The fan is then bolted to the ends of the bosses to retain the disc from axial movement away from the bosses. Screening members may also be positioned about the periphery of the disc and across inlet ports to provide additional effective closure of the disc brake cavity within the side panel or panels.
Abstract: A rotary friction device having at least a plate supporting a friction element for frictional engagement between relatively rotatable members. When in frictional engagement the plate is placed in tension to tend to stretch the expanse of the same to prevent the application of compressive forces thereon or flexure thereof so as to avoid the production of chattering and related problems by the same.