Abstract: A movable disc for a friction type electromagnetic clutch/brake is designed for preventing the production of grating sounds from the movable disc. The movable disc includes a rotary armature being movable in a predetermined direction by the application of electromagnetic force, a friction material stuck onto one side surface of the rotary armature, an elastic member supported on one side surface of the rotary armature to the side opposite to the friction material, a face plate fitted to the rotary armature so as to urge the elastic member to the rotary armature. Perforations are formed in the face plate to reduce its mass and the surface area contacting to the elastic member thereby attaining a rapid start up and good periodic damping characteristic.

Abstract: Applicant has provided 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.

Abstract: A disc brake system for a motorcycle having a wheel hub includes a brake disc fixed on one side of the hub to rotate with the hub. A caliper member is fixed to the motorcycle for braking engagement with the brake disc. A side panel of substantially the same diameter as the disc covers the brake disc and has a cooling air introduction port. A radial fan for inducing radial outward air flow from the brake disc is positioned adjacent the periphery of the brake disc and fixed to rotate with the hub. The hub includes a plurality of bosses extending towards the brake disc. The disc brake contains cutout portions for engagement with the bosses. The radial fan includes a ring attached to the ends of the bosses on the other side of the brake disc from the hub to retain the brake disc on the bosses. A radial flange extending from the hub covers the inner periphery of the radial flow fan.

Abstract: A disc brake and dust shield therefore comprises an inboard plate secured to an axle flange and an outboard plate secured to a rotatable hub. The plates cooperates with a wheel assembly to define a cavity receiving and protecting a rotor from contaminants.

Abstract: A cam following roller is one arm while a latching member is the other arm of a two-armed lever. The roller rides on the surface of a cam disk. The latch is supported by a spring in a released position relative to the stopping points of the sprocket as long as the predetermined speed limit of lowering a hoist is not exceeded. The sprocket is formed of two segments which are releasably connected with each other by screws. Brake pressure springs are arranged in the shape of a cup-spring package between the screw head and support surfaces of the sprocket segments.When the lowering speed of the hoist is exceeded, the latch is pressed into one of the stopping points of the sprocket, said sprocket arresting, by way of a brake lining, the brake drum and the cable drum connected therewith.

Abstract: In a disc brake the application of the brake is initiated by angular movement of at least one pressure plate with respect to a reaction member to cause the pressure plate to move axially into engagement with a friction disc which, in turn, is urged into engagement with a surface in a stationary housing. The angular movement is effected hydraulically by an actuator comprising a piston working in a bore of a cylinder, the axis of which is substantially at right angles to that of the brake. The piston acts through a part-spherical rocking thrust coupling associated with a pull-rod passing through the actuator with a substantial clearance, the inner end of the pull-rod being pivotally coupled to a lug on the pressure plate, and the outer end being adapted for connection to a hand lever by which the pull-rod can be moved in a brake-applying direction.

Abstract: A device for cooling the wheels of motor vehicles which are equipped with disc brakes mounted on the wheels between the wheel centers and a cover plate. The rotors of the disc brakes are fastened to the wheel flange of the wheel hub by a pot-shaped part which delimits radially an annular space opening in the direction of the cover plate. The cover plate is provided with openings through which a cooling air stream can enter the wheel space containing the brake. The wheel center is provided with openings near a rim portion thereof through which air can escape from the outer annular space left between the brake and wheel center. The annular space communicates through a space between the rim and the brake with an annular space delimited by the remaining space and the cover plate in the axial direction.

Abstract: A dust shield plate is clamped between the spider of an automotive vehicle wheel and the rotor of a disc brake for that wheel. This plate covers the axially inboard side of the wheel spider and prevents dust given off by the disc brake from getting on the wheel at the axially outboard side of the wheel spider. The shield plate has a circular peripheral edge which slidably engages the inside of the wheel at its tire-supporting rim and circumferentially spaced slits extending inward from this edge to provide flexible and resilient fingers in succession along the periphery. This enables the shield plate to be slidably inserted into wheels with somewhat different inside diameters.The shield plate has seven arcuate openings enabling it to be mounted on a wheel with four or five wheels studs or four wheels studs and two guide pins.

Abstract: A strainer device for railroad car air brake combined dirt collector and cut out cocks, and arranged to be applied within the swirl chamber of such cocks, and between the collector bowl, about the pedestal thereof, and the lip of the cock throat chamber, which strainer device comprises an outer shell that is open and flanged at both ends, with one end of the outer shell being disposed adjacent the throat lip, an annular seal applied between the said outer shell one end and the throat lip, an inner shell disposed within the outer shell and secured at the other end of the outer shell and adapted to receive the cock collector chamber pedestal, and a compression spring received about the pedestal within the cock collector bowl and resiliently seated against the outer shell end flange at that end of same for spring biasing the other end of the outer shell and the seal against the throat lip.

Abstract: A brake disc has a hat section tapered frusto-conically and receives a viscoelastic damping material between the tapered hat section and the mating outer periphery of the disc mounting flange. The damping material may be rubber coated steel shim stock.

Abstract: A dustcover used in a disc brake of a vehicle for covering a disc rotor disposed in a wheel disc of cup shape from the opposite side of the wheel disc so as to protect the rotor from splashed mud water. The dustcover is provided with a pair of vent openings respectively open to the frontward direction and the rearward direction of the vehicle formed thereon at a lowered portion thereof than the rotational axis of the rotor. An air collecting portion is formed at the frontwardly open vent opening, gradually expanding in the air flowing area in the frontward direction of the vehicle. The front end of the air collecting portion is projected out of the cup-shaped wheel disc. The air collected by the air collecting portion is allowed to pass rearwardly through the dustcover right along the lower half portion of the rotor for cooling it.

Abstract: A disk brake for a motor vehicle includes a brake disk carried by a wheel hub and which has radial fins, the fins dissipating heat and inducing a flow of air over the brake disk. A cover closes the side of the brake disk remote from the wheel hub and supports a caliper brake mechanism, an arcuate segment of the fins being removable to permit replacement of brake pads of the brake mechanism.

Abstract: A device for use with a wheel axle shaft and housing for preventing oil that leaks from within the axle housing from escaping along the axle shaft to a brake device, comprises an oil passage along the axle shaft to discharge the leaked oil from the axle shaft, and an annular member securely mounted on the axle shaft and in the oil passage to splash the leaked oil guided thereon radially and outwardly by applying a centrifugal force to the oil, thereby effectively discharging the leaked oil from the axle shaft in order to prevent the leaked oil from travelling along the axle shaft to reach the brake device.

Abstract: A disc brake protective cover plate is mounted to a radial flange on a tractor loader wheel axle housing which is used for mounting multiple air-over-hydraulic, external drive caliper disc brake units thereto. The disc brake protective cover plate is in the form of a canister which has an open end slipping over the disc brake units into a hub of the tractor wheel. The cover plate protects feeder brake lines which are connected to a main disc brake unit and run externally alongside the radial flange to two servo disc brake units.

Abstract: A device for preventing intrusion of water, dust, etc. into drum brake of an automotive vehicle, wherein a labyrinth is formed at a fitting portion between the outer peripheral surface of a brake panel fixed to the vehicle body and the outer peripheral surface of a brake drum rotatable together with wheels, and wherein the labyrinthine grooves are made larger as they go toward inside, and the edges of the partition walls and the brake panel of the brake drum forming the labyrinth are bent outward for effective prevention of the dust, etc. from entering into the brake drum.

Abstract: The invention provides a protective shield device for a brake having a rotating braking element in the form of a ring or drum. The shield comprises a plate which extends opposite the face of at least a part of the rotating element of the brake, and a sheet part which extends the plate by running out from the plane of the latter to penetrate into the internal space of the rotating element in the immediate vicinity thereof. This provides an ejector for the brake which prevents solid particles such as grit entering the brake parts.The invention is particularly applicable to brakes designed for use in motor vehicles.

Abstract: A disc brake of ventilated disc rotor type wherein air is positively introduced into the air passages formed in the disc rotor. In the dust cover of this type disc brake an air introducing hole is formed. On the outside of the dust cover an air collector is disposed for positively collecting and introducing the air flowing in the vicinity of the dust cover. On the inside of the dust cover an air guide is disposed for guiding the air taken through the air introducing hole as far as the entrance of the air passages in the disc rotor.

Abstract: A water preventing structure of a drum-in-disc brake having a brake drum and a disc rotor extending from the outer periphery thereof. A friction surface of the disc rotor and an opening of the brake drum are respectively covered by a dust cover and a backing plate. A water carrying plate is attached to the inside surface of the dust cover for forming an upwardly open water carrying groove in co-operation with the latter. The inside surface of the inner brim of the dust cover is fixed to the outside surface of the outer brim of the backing plate, leaving a part thereof separated therefrom for forming a drainage passage at a place right beneath the water carrying plate.

Abstract: An improvement of an anti-rust cover for covering the outer side of a disc rotor of a vehicle disc brake. The anti-rust cover, which is capable of removably attached to the outer periphery of a dust cover, for covering the inner side of the disc rotor, at its outer periphery is characterized in that an engaging member disposed, on the inner surface and in the vicinity of the outer periphery, thereof for being engaged with the outer periphery of the dust cover, is utilized to afford a recess portion large enough to allow at least a part of a human finger to be held therein, and the anti-rust cover can be easily removed by means of holding a finger in the recess portion when required to be taken away.

Abstract: A balancing piece fixedly received within a tapered opening of cooling vents radially disposed in a ventilated brake disc for the purpose of improving rotational balance of the ventilated disc. The balancing piece includes, as integral parts thereof, a wide portion at a wide end thereof, at least one tab portion formed adjacent to the wide portion and protruding at an acute angle relative to the wide end portion, and a locking portion at a narrow end thereof.

Abstract: In a bicycle-type ergometric exerciser, a brake flywheel comprising two complementally dished stamped metal discs with central hub-receiving apertures and secured together by rivets equally circumferentially spaced around an intermediate portion, with lateral marginal portions providing outer brake surfaces, and opposed inwardly directed peripheral flanges with extruded rubber strips having flange-receiving slots mounted thereon in axially lateral abutting relation to provide a relatively soft outer protective peripheral tire and inner peripheral seats for split steel rings disposed interiorly for inertial weighting.

Abstract: An anti-rust cover for a disc rotor used in a vehicle disc brake. It is characteristically provided, as a means of attaching the same to the dust cover, with a combined engaging mechanism composed of at least three engaging members in all, i.e., at least one inside engaging member and at least one outside engaging member, arranged alternatively with a predetermined circumferential phase difference on the inner surface thereof confronted to the dust cover, near the outer periphery of the anti-rust cover. It is to be snugly attached to the dust cover by being fitted-in by the outer periphery of the dust cover between the inside engaging member(s) and the outside engaging member(s).

Abstract: An improved anti-rust cover for covering the outer side of a disc rotor of a vehicle disc brake. The anti-rust cover, which is capable of removably attached to the outer periphery of a dust cover for covering the inner side of the disc rotor at its outer periphery, is characterized in that the same is provided with a bridge portion formed by partly narrowing the width of the annular portion thereof and a detoured path portion formed by protruding a part of the bridge portion outwardly from base of the bridge portion to encircle a gate shaped open space in it.

Abstract: A disc cover for disc brakes on a two-wheeled vehicle having a series of fan elements attached to a wheel attaching axis and adapted to be nested in a stored configuration or overlapping and covering the disc when deployed. The elements are attached to each other when deployed and are all locked together when nested by an attaching pin. Each element is in the shape of a U or L such that the outer surface projects over the disc surface but the inwardly turned portion extends only part way about the disc.

Abstract: A rust preventing device for keeping a rotor of a disc brake from rusting. The rotor has an inner surface and an outer surface covered by a dust shield. The inner surface of the rotor is covered by a rust preventing cover. The rust preventing cover is secured to the dust shield in a snapping manner.

Abstract: The present noise damping apparatus is especially intended for damping the noise caused by wheels running on rails. For this purpose there is provided a noise screen connected to at least one surface of the rail wheel in a force transmitting, yet removable manner. The noise screen comprises vibration damping reed members. This screen prevents noise generated by the wheel proper from radiating outwardly and it also acts as a noise absorber for the impact noise propagating in the wheel and other solid bodies.

Abstract: A wheel balancing device for permanent wheel attachment. A rim of the device acts on the wheel periphery to confine same against vibrational movement. A hub and conical disc when acted on by centrifugal force during wheel rotation move axially toward the wheel to radially load the rim and displace same into forceful contact with the wheel periphery.

Abstract: A water and dust shield for protecting the interior of vehicle brake assemblies provides a resilient and flexible flanged disc which is centrally apertured and partially split transversely to provide for its installation on an axle to enclose a rotating brake drum on a wheel carried by the axle. A plurality of arms attached to the shield about the central aperture enable a clamping band to secure the shield to the axle in slightly spaced relation thereto.

Abstract: A disc for a disc-brake used in a vehicle. The disc is, on the whole surface portion thereof where it contacts the pad, provided with a number of circular machined scores, or in some cases spiral scores which, having a small pitch, are almost circular the center of scores being at the rotation center of the disc. The scores are ground or cut having a surface roughness of 2 microns or more taken in ten point height, that is, in average height at randomly selected ten points, by ISO R 468.

Abstract: A warning device for a friction pad in a disk brake of the type which includes a brake disk, and a pair of lined brake shoes which are disposed on the opposite sides of the brake disk and slidable towards the brake disk so as to hold the brake disk therebetween for frictional engagement. This warning device includes a contacting piece which is movable, together with at least one of the shoes, towards one of the side surfaces of the brake disk. A plurality of serrations or projecting portions are provided in part of the surface of the brake disk, which is adjacent to the frictional contacting surface of the brake disk. The projecting portions extend in the radial direction and are arranged in the circumferential direction of the disk. When the friction pads are worn down beyond a predetermined limit, the contacting piece contacts the projecting portions on the brake disk, thereby giving off a clattering noise for warning the driver to get brake service.

Abstract: A vibration damper for inhibiting harmonic vibrations in a brake rotor during resurfacing operations is made by forming an elastic tube or band into a closed loop with tubular iron weights strung thereon before the loop is joined. The elastic tube is first stretched lengthwise to make its lateral dimensions small enough to thread through the tubular weights, and the tube is then relaxed and its ends are interconnected. The elasticity of the thus formed damper holds the tubular iron weights in preselected position on the tube and also allows it to be stretched over the edge of brake rotors which vary considerably in size. The resilient tube of the damper resiliently engages the outer periphery of the rotor to retain the weights in place on the periphery of the rotor as the weights damp the vibrations which occur while the spinning rotor is having its radial braking surfaces machined.

Abstract: A method of and apparatus for balancing rotating machinery components which ncorporate butted flanges or faces is provided. A circumferential slot is formed on the interior face of one of the flanges and a hole is bored in either flange communicating with the slot. A sheet metal lock is inserted through the hole along the side surface thereof and a balancing weight or counterweight is inserted adjacent the lock. End tabs in the lock which extend in opposite directions are bent to support and retain the counterweight within the hole in the flange.

Abstract: A brake disc for disc brakes on rail vehicles comprises an intermediate member connected to the inner peripheral surface of an annular element. The intermediate member is spaced radially from a hub and there are a pair of radially opposed annular grooves in the hub and intermediate member with blocks of resilient material in the opposed grooves. The blocks are pre-stressed and completely occupy the widths of the grooves. Heat inhibiting material is provided for inhibiting heat flow from the annular braking element to the resilient blocks.

Abstract: A dust shield for a disc brake according to the present disclosure has an arcuate portion positioned adjacent an annular braking surface of a disc brake rotor. The arcuate portion of the shield has a plurality of ventilation holes with an annular lip at the periphery of each hole. A plate extends across the arcuate shield portion and is spaced apart from the annular lips. The dust shield permits air to flow about the rotor for cooling purposes while reducing the contamination of the braking surfaces of the rotor by dirt particles carried by splashed road water and air.

Abstract: A brake disk comprising a pair of spaced friction disks against which a brake lining on a brake shoe can be applied to produce a braking effect are interconnected by a plurality of ribs and guide vanes so as to define ventilation passages between the friction disks. Strips of vibration damping material are positioned in radial grooves formed in the mutually facing surfaces of the friction disks. The inserts comprise a metal which damps vibrations and has a coefficient of expansion greater than that of the iron material from which the friction disks are formed and may comprise such metals as lead, bronze or copper.

Abstract: A disc brake with a friction disc having a pair of annular friction surfaces placed between brake shoes disposed about such friction surfaces for coming into frictional engagement therewith when the brake is actuated, the friction disc including a cast member located in the region of the surfaces which come into frictional contact with the brake shoes when the brake is actuated, the cast member including a separating joint running oblique with respect to the friction surfaces.