Abstract: A one-piece brake disk for a vehicle includes a radially inner annular portion having a plurality of circumferentially located mounting holes defining a mounting circle; a radially outer annular portion concentric with the radially inner annular portion and having opposite braking surfaces; and a plurality of connecting arms extending from an inner peripheral surface of the radially outer annular portion to an outer peripheral surface of the radially inner annular portion. Each of the plurality of connecting arms is tangent to an effective circle concentric with the mounting circle, wherein the effective circle has a radius greater than a radius of the mounting circle.

Abstract: A brake (10) for a wheel of a vehicle includes a housing (11) having one end closed by an end plate (12) which is adapted to be attached to the vehicle. An axle assembly (26) is received in the housing (11) and is adapted to be attached to the wheel for rotation therewith. The axle assembly includes a drive surface (33) which carries a shaft sleeve (48) having a splined outer surface (52). A disc brake assembly (55) is immersed in a fluid in the housing (11) and includes a plurality of rotatable discs (54) carried by the splined surface (52) and a plurality of stationary discs (56) which alternate with the rotatable discs (54) to form the disc brake assembly (55). Each of the stationary discs (56) has ears (58A, 58B) which are received in brackets (59) carried by the housing (11). A piston ring (62) is moveable to cause the stationary discs (56) to engage the rotatable discs (54) to apply a braking torque to the wheel.

Abstract: A disc brake system (10) comprises a disc (12, 14), and a hub (16) which is arranged to rotate about an axis (18) thereof. The hub (16) comprises a mounting portion (16d) which is generally in the shape of a hollow cylinder. The system (10) also comprises grooves (20) and teeth (22) by which the disc (12, 14) is mounted on the external surface of the mounting portion (16d) for rotation with the hub (16) as a unit about the axis (18) and the disc (12, 14) can perform axial sliding movement on the hub. The hub (16) carries vanes (62) arranged so that, during rotation of the hub (16) about the axis (18), the vanes act to force air into the interior of the mounting portion (16d). The mounting portion (16d) has openings (60) therethrough arranged so that air forced into the interior of the mounting portion (16d) passes through the openings and flows over said disc (12, 14).

Abstract: A liquid cooled brake system for motor vehicles. A mounting bracket having a plurality of mounting members is adapted to be fixedly mounted to an axle spindle assembly. The mounting bracket is adapted to support at least a first stator, a rotor, and at least one caliper assembly. The stator includes a cavity for carrying the cooling liquid that may include a plurality of flow obstacles to reduce the cooling liquid flow velocity so as to enhance the cooling capacity of the system. The stator may also incorporate a plurality of heat sink structures arranged about the stator.

Abstract: A single sided friction assembly is provided in which an annular ring of friction material is provided on only one side of a relatively heat conductive metallic core plate, with the rings facing the same direction, and the ring of friction material engaging the rear bare metal side of an adjacent disk. An actuator is provided to bring the assembly into frictional engagement. Modifications are made at one and preferably both ends of the assembly to accommodate thermal deformations of the disks.

Abstract: There is a brake disc rotor having a central hat (1) co-axial with surrounding rings (2) which form brake bands (3) for engagement with brake pads. The rings (3) are supported in a spaced apart parallel configuration with channels (12) therebetween whereby in use of the rotor cooling air is drawn in through vent means formed around the inner periphery of the rings (3) and then radially outwardly through the channels (12) as the rotor turns. The vent means include inlet vent ports (7) on the outboard side of the rotor.

Abstract: A cooling mechanism for a brake assembly is provided. The brake assembly includes a brake rotor with opposing outer surfaces. Brake pads having a lining are arranged adjacent to the opposing outer surfaces as is well known. An actuator, typically a hydraulic piston, forces the linings into engagement with the outer surface to slow the vehicle thereby generating a significant amount of heat at the rotor/brake pad interface. Inadequate cooling of the brakes occurs because of the tight packaging of the brake components and limited airflow. To better dissipate the heat the brake pad lining includes a cermet matrix, which has a high thermal conductivity. By utilizing a cermet in the brake pad lining, as opposed to conventional compositions, substantially more heat may be extracted at the rotor/brake pad interface thereby improving brake performance.

Abstract: An eddy-current brake device includes at least one heat exchanger for dissipating the thermal energy that is due to the eddy currents during braking. The heat exchanger is designed to define a path for the cooling liquid, which path is predetermined in order to minimize the pressure drops and maximize the rate of flow of cooling liquid circulating through the exchanger, with a view to reducing the variations in working temperature of the heat exchanger. The device may include two symmetric heat exchangers, of which the inlets, the circuits and the outlets for water are arranged symmetrically, so as to compensate for the forces due to the currents of cooling liquid and so as thus to minimize the corresponding residual torque.

Abstract: A disc brake including a pair of friction plates arranged coaxially in a parallel, spaced-apart relationship and a plurality of vanes extending between the pair of friction plates, each of the vanes having a proximal end, a distal end and a mid-portion extending between the proximal end and the distal end, the proximal ends of a plurality of the vanes having a first width, the mid-portion having a second width, the first width being substantially greater than the second width. The vanes can include a T-shaped portion adjacent the proximal end.

Abstract: A rotor has an array of grooves formed on the brake pad contact surface. The array is preferably formed as a repeating pattern of regularly spaced grooves. The repeating pattern of grooves creates a plurality of radially and circumferentially offset rings of grooves. The rings can radially overlap. The rotor is preferably ventilated having two brake pad contact surfaces separated by a plurality of vanes. The grooves are preferably arranged on the brake pad contact surfaces between the vanes. The grooves can have various configurations and shapes. The array of grooves increases friction between a brake rotor and brake pads, and decreases the thermal gradient and thermal distortion on the brake pad contact surfaces.

Abstract: A functionally excellent and structurally simple disk brake with a caliper body formed as a single part constituted by a hub-side elongate element, by a wheel-side elongate element, and by connecting bridges extending astride a disk, hydraulic pressure pistons housed in the elongate elements and acting on respective pads by way of radiator elements, as well as a duct for the passage of cooling air, formed inside the caliper body and extending between the inlet opening and outlet openings facing these radiator elements.

Abstract: An axial fixing device for axially fixing an annular brake disk on a wheel hub of a motor vehicle, the annular brake disk having the same axis of rotation as the hub and including radial ventilation ducts regularly distributed about its periphery. According to the invention, the hub has axial guide pieces in relief, or “lugs”, for co-operating with fluting in an inner peripheral edge of the disk to center the disk, to lock it angularly, and to guide it axially relative to the hub, each lug of the hub having a radial through channel for co-operating with a corresponding ventilation duct of the disk, and the disk is held axially in the hub with play by axial holding means disposed between the disk and the hub.

Abstract: A piston structure for use in a brake caliper has a cylindrical base portion having an annular receiving recess and a base mounted spring received therein. A cylindrical brake pad engaging portion has an annular recess formed within its length. A recess is formed within the length of the base portion with an elastomeric o-ring positioned within the recess. A thin layer of metallic material is integrally formed with the remainder of the piston. The thin layer of metallic material is adapted to engage the surface of an adjacent brake pad.

Abstract: An annular disc brake assembly having a housing mounted to a vehicle and a rotor disc mounted to a wheel of the vehicle. Annular brake pads extend parallel to the rotor disc within the housing and are mounted thereto with at least one brake pad being movable axially by means of an oil applied bladder mounted to the housing and moving the first brake pad axially against the disc brake. The rotor disc is solid and has cooling fins on either side, just below the friction surfaces for dissipating the heat from the solid disc.

Abstract: Apparatus for aircraft brake thermal management including heat shields made of one or more insulating pouches of metallic foil having ceramic fibers or other appropriate insulation therein. The pouches are either vacuum sealed or provided with pin hole breathing apertures to eliminate expansion forces, while precluding the entry of cleaning fluids, moisture and the like into the cavity thereof. The invention further provides for brake rotor and stator disks having lugs of increased shear strength, while providing cooling apertures or slots therein. Finally, the invention includes a heat shield interposed between an aircraft wheel and the brake disk stack, and wherein the heat shield is flared at an end thereof to maximize the ingress and egress of cooling air to optimize aircraft turnaround time.

Abstract: A cooling system for a brake having at least one pad and a surface engagable by the at least one pad. The cooling system includes a source of coolant and at least one nozzle operably positionable to spray the surface of the brake. A valve operates to supply coolant from the source of coolant to the at least one nozzle in response to an actuation signal. A temperature sensor is operably positionable to measure a temperature of the surface of the brake and generate a signal corresponding the measured temperature. A control unit receives the signal corresponding to the measured temperature from the temperature sensor and generates and transmits the actuation signal to the valve in accordance with a control program stored in memory.

Abstract: A splash shield for a vehicle wheel disc brake assembly is provided. Each wheel disc brake assembly includes a brake rotor having an inner brake surface and a splash shield. The splash shield includes a central attachment portion. Extending from the central attachment portion is a flange-shaped shield portion. The shield portion has an outer surface with a plurality of generally radially extending vanes formed on the outer surface of the shield portion, the vanes being positioned adjacent the inner brake surface of the brake rotor when the splash shield is mounted to the vehicle.

Abstract: A hydraulic motor capable of minimizing a wear caused on a rotating brake disk of a brake device, wherein a rotating brake disk (32) which forms a plurality of arc-shaped grooves (17) apart from each other in circumferential direction and constitutes a brake device (31) is provided on the outer peripheral side of a cylinder block (15), and a plurality of arc-shaped projections (33) engaged with the arc-shaped grooves (17) and a plurality of radial contact parts (34) are provided on the inner peripheral side of the rotating brake disk (32) and the plurality of radial contact parts (34) are allowed to face the outer peripheral surface of the cylinder block (15) so that they can be brought into contact with each other, whereby, at the time of braking of the hydraulic motor (10), the movement of the rotating brake disk (32) in rotating direction is controlled by the arc-shaped projections (33) and the movement of the rotating brake disk (32) in radial direction is controlled by the radial contact parts (34).

Abstract: A disc brake assembly is provided with heat insulators to reduce the heat transferred to the hydraulic fluid of the disc brake assembly during braking. The disc brake assembly includes a caliper housing, a first and a second friction member coupled to the caliper housing and one or more pistons movably coupled to the caliper housing to move one or both of the friction members. The first and second friction members form a rotor receiving slot. At least the first friction member is movably coupled to the caliper housing and the piston is movably coupled to the caliper housing to move the first friction member between a release position and a braking position. Each piston has an internal recess to partially receive the heat insulator. The heat insulator is disposed between the piston and the first friction member to prevent heat transfer from the first friction member to the piston.

Abstract: The disc brake cooling system for a vehicle with hydraulic brakes has a sealed circular cooling system employing a piston pump which produces a very rapid flow of brake fluid through the brake lines and calipers constantly during non-braking of the vehicle. After braking, the constant rapid flow of the fluid cools the temperature of the fluid, and hence of the brakes, over the course of the rapid circular motion through the system so as to prevent boiling of the fluid.

Abstract: A vehicle braking system includes a device for cooling the components of the brake assembly. The air source that is normally used to activate the brake assembly components is coupled with a plurality of flexible conduits that direct air toward one or more of the brake assembly components. A high velocity air nozzle preferably is provided at the end of each conduit. The air from the compressed air source is maintained in a compressed state through the conduits and decompresses as it exits the discharge nozzles. The decompression of the air through the nozzles results in cooling the air and the nearby brake components at which the air is directed.

Abstract: A wheel bearing housing for suspending a wheel of a vehicle is provided. The wheel, mounted at the wheel bearing housing, is provided with a brake device. In order to create a wheel suspension device which has devices for guiding air that are provided at low construction costs, it is provided that the outside of the wheel bearing housing is formed at least regionally as an air-guiding element.

Abstract: A brake system in a buggy includes first and second brake shafts which are disposed on one side of the left and right differential output shafts in a longitudinal direction of the vehicle and in parallel to the left and right differential output shafts and which are driven at increased speeds by the left and right differential output shafts. The first and second brake shafts and the first and second brakes are accommodated within a reduction case, so that the first and second brakes are cooled by lubricating oil within the reduction case. Thus, the brake system in the buggy can be mounted at a high level above the ground; is excellent in dustproof and waterproof properties; is cooled satisfactorily, and moreover, is capable of reliably braking left and right wheels simultaneously.

Abstract: A full disk brake for a vehicle includes a rotor disk, which is attached to the vehicle wheel. Two friction disks are installed within a brake-clamping unit, facing each side of the rotor disk. The friction disks are secured in the direction of rotation, but are capable of being shifted in an axial direction. Brake lining segments are attached to both sides of the rotor disk. When the brake-clamping unit is actuated, a friction connection is established between the rotor disk and the friction disks. Air cooling channels, located between the brake lining segments, provide cooling air between the rotor disk and the friction disks directly at the point of origination. Moreover, the brake lining segments act as heat-insulating elements between the friction disks and the rotor disk, thus further reducing the heating of the rotor disk.

Abstract: A differential axle assembly for providing differential torque transfer between an input shaft and two output shafts is disposed within a housing. Friction discs are splined to each of the output shafts. Reaction discs are splined to a stationery brake housing or trumpet casting in turn fixed relative to the differential housing. A piston or actuator selectively compresses the reaction plates to frictionally engage with the friction plates and apply a braking torque to the output shafts. Grooves are formed in the friction discs to cause lubricating oil to be thrown outward through the friction plates and enter oil cooling channels formed to divert the lubricating oil. The lubricating oil is preferably split off through two oil cooling channels. A first oil channel extends along the differential housing outward toward the wheel. A second oil channel extends inward toward the differential case. The lubricating oil absorbs heat as it flows through the brake.

Abstract: A bicycle disc brake caliper is provided with a detachable cooling system that transfers heat away from the actuating fluid. Basically, the bicycle disc brake caliper has a housing and a piston unit, with a coolant member of the cooling system attached to the housing. The housing has a frame mounting member sized to be coupled to a portion of a bicycle frame. The piston unit is movably coupled to the housing between a release position, in which the piston unit is spaced from a brake disc mounted to a wheel of a bicycle, and a braking position, in which the piston unit engages the brake disc of the bicycle wheel. The coolant member has a coolant area for receiving coolant to create a coolant heat sink that transfers heat from the housing. The housing has an actuating passage in fluid communication with the piston unit to move the piston unit via an actuating fluid. In one embodiment, the cooling system includes a pump and a reservoir.

Abstract: A bicycle disc brake caliper is provided with a cooling system that transfers heat away from the actuating fluid. Basically, the bicycle disc brake caliper has a housing and a piston unit, with a coolant member of the cooling system attached to the housing. The housing has a frame mounting member sized to be coupled to a portion of a bicycle frame. The piston unit is movably coupled to the housing between a release position, in which the piston unit is spaced from a brake disc mounted to a wheel of a bicycle, and a braking position, in which the piston unit engages the brake disc of the bicycle wheel. The coolant member has a coolant area for receiving coolant to create a coolant heat sink that transfers heat from the housing. The housing has an actuating passage in fluid communication with the piston unit to move the piston unit via an actuating fluid. In one embodiment, the cooling system includes a pump and a reservoir.

Abstract: The friction device comprises a non-rotary casing (50) in the form of a cage in which there are received a thrust structure (30), a set of friction disks (21, 22, 23, 24, 25) on a common axis, and a backing structure (40), the casing having a peripheral wall provided with ventilation openings (54). The friction device is actuated by a pneumatic actuator (60) mechanically connected to the central portion of the thrust structure through a central opening in an end wall (51) of the casing. Thermal insulation is arranged between the set of disks (21, 22, 23, 24, 25) and the outside of the casing adjacent to the end wall provided with the bearing unit (11) for the rotary shaft (10), and comprises at least one heat barrier (76-77, 78-79) situated at the bearing unit (11).

Abstract: An electronically controlled ventilation system for a disk brake is provided, particularly in the case of a vehicle, in which a brake disk to be ventilated is arranged in the course of a flow duct. An optimal ventilation of the disk brake is achieved in that a control unit is provided which generates a ventilation signal as a function of input quantities. The signal is emitted to a device for the corresponding change of the flow cross-section of the flow duct.

Abstract: The present invention provides a brake cooling system for cooling vehicle brakes having a fascia for mounting in a front area of the vehicle. The fascia has at least one aperture therein for allowing air to pass therethrough. The aperture has a first aperture side opposing a second aperture side. The brake cooling system further has a channel structure communicating with the aperture to allow the air to pass through the channel structure. The channel structure extends back from the fascia and has a first channel side opposing a second channel side. The channel structure is constructed to channel air from the aperture to the vehicle brakes when the vehicle is moving in a forward direction.

Abstract: Disclosed is an improved piston construction for use in a braking system. The piston construction employs an insulator at its inner end and a conical aperture at it outer end. Both of these promote increased heat isolation during braking operations. The piston of the present invention also employs an o-ring which is secured within a cylindrical recess. The o-ring ensures a fluid tight seal between the piston and the piston housing. Through the use of the o-ring, air is prevented from entering the brake lines.

Abstract: The invention is directed to a ventilated brake rotor, including a hub mounting face, a rotor ring having two faces, and a hub wall connecting the hub mounting face to the rotor ring. The rotor ring has alternately faced conical passages disposed at an angle less than 90 degrees to the face of the rotor ring. Each passage passes through both the first and second face of the rotor ring, and when the ventilated brake rotor is rotated each passage acts as a conduit for air flow through the rotor ring.

Abstract: A ventilated brake rotor having vents disposed between two discs. The vents are defined by an adjacent pair of vanes distributed around the first disc and disposed below the second disc. Each vane is defined by a camber. The camber, in turn, is parallel to a curve that is defined by two camber lines. The curve is tangent to the leading end of a first camber line and tangent to a trailing end of the second camber line. The first and the second camber lines intersect where the first camber line is defined from a point on the interior radius of one of the two discs that intersects a datum. Moreover, the first camber line extends at a throat angle from the datum.

Abstract: A hydraulic motor (2) with a braking device (8), is acted upon by means of a control fluid via a brake release line (6). The brake release line (6) is used to allow a continuous flushing flow of control fluid through the hydraulic motor at the same time as the release of the brake. The braking device (8) is connected to the casing of the hydraulic motor (2). An outlet opening (12) of the hydraulic motor (2) leads via a leakage-oil line (13) to the tank for the control fluid. In a hydraulic travel drive with a closed hydraulic circuit, the brake release line (6) can be connected to the shut-off device (4) for the servo adjustment system of the variable-displacement pump (1), and the leakage-oil line (13) of the hydraulic motor (2) can lead to the tank for the entire hydraulic fluid in the system.

Abstract: A wheel hub for vehicles has a built-in brake assembly for stopping and parking the vehicle. A parking brake for parking the vehicle has a piston (30) and a spring assembly, which are arranged within a ring gear support member (11), and impact on the brake piston (26) of a multi-plate friction type wet brake (15), and on the ring gear support member (11). Moreover, the parking brake has elements (36) for manually de-activating the parking brake (29) from outside the hub.

Abstract: An internally ventilated brake disk has two friction rings and an inside shoe brake, in the interior friction ring. A ring groove is provided which, in its base, has passage openings to air guiding ducts between the friction rings of the brake disk. The ring groove is bounded laterally by a water collecting surface and on the opposite side by a water draining surface, in which case these two surfaces are inclined with respect to an exterior groove opening such that this groove opening is narrowed. The water collecting surface is arranged in an intended manner with respect to a wall of the air guiding duct. This indentation is used for collecting splashing water and removing the splashing water by way of the air guiding duct or a space between the friction ring and the shielding metal plate to the outside.

Abstract: An eddy-current brake device, of the type comprising at least one heat exchanger for dissipating the thermal energy that is due to the eddy currents during braking, characterized in that each heat exchanger is designed to define a path for the cooling liquid, which path is predetermined in order to minimize the pressure drops and maximize the rate of flow of cooling liquid circulating through the exchanger, with a view to reducing the variations in working temperature of the heat exchanger, the device comprising two symmetric heat exchangers, of which the inlets (72, 73), the circuits and the outlets (75, 76) for water are arranged symmetrically, so as to compensate for the forces due to the currents of cooling liquid and so as thus to minimize the corresponding residual torque.

Abstract: A brake and pulley assembly for retrofitting onto the hub of a belt driven, swingarm mounted rear wheel of a motorcycle. The hub has a multiplicity of bolt holes therein forming a bolt hole pattern. The hub is mounted to an axle. The brake and pulley assembly consists of a pulley and rotor unit. The pulley is bolted to the hub and the rotor is bolted or otherwise attached to the pulley. A caliper assembly is attached to the swingarm of the motorcycle and provides for frictionally engaging the rotor to slow the motorcycle down.

Abstract: Improved disc brake, of the type comprising a disc in the shape of a flat circular crown having at a point of its periphery, two facing braking pads fitted to press the disc inserted between said pads. The brake is characterized in that at the disc inside perimeter there is a plurality of radially-arranged entrants, regularly distributed and preferably back-bent with respect to the rotation sense of the disc. Each of the brake pads facing the disc having on the face rubbing said disc, an arcuated recess in the sense associated with the previously cited entrant, from a mutual interference area to the pad external profile, an air communication is formed at the mutual interference area of the entrant and the recess which is cooling the brake unit.

Abstract: A bicycle disc brake caliper is provided with a cooling system that transfers heat away from the actuating fluid. Basically, the bicycle disc brake caliper has a housing and a piston unit, with a coolant member of the cooling system attached to the housing. The housing has a frame mounting member sized to be coupled to a portion of a bicycle frame. The piston unit is movably coupled to the housing between a release position, in which the piston unit is spaced from a brake disc mounted to a wheel of a bicycle, and a braking position, in which the piston unit engages the brake disc of the bicycle wheel. The coolant member has a coolant area for receiving coolant to create a coolant heat sink that transfers heat from the housing. The housing has an actuating passage in fluid communication with the piston unit to move the piston unit via an actuating fluid. In one embodiment, the cooling system includes a pump and a reservoir.

Abstract: A brake system for braking an output shaft rotated by a drive gear train driven by an electric motor capable of generating a maximum drive torque at the output shaft. The brake system includes a brake device capable of applying a maximum braking torque to a brake shaft, and a brake gear train having a brake gear fixed to the brake shaft and at least two rotatably mounted reduction gears for transmitting torque between the output shaft and the brake gear. The brake gear and the reduction gears provide a reduction gear ratio sufficient to reduce the maximum drive torque to a drive torque at the brake shaft substantially less than the maximum braking torque available from the brake device. The brake device may include a plurality of fixed discs and rotating discs enclosed in a housing and immersed in a cooling fluid.

Abstract: A vented disc brake rotor having an airflow director for funneling air into the braking plate vents thereby improving the cooling effectiveness of the rotor. The vented disc brake rotor includes first and second braking plates connected together in a mutually parallel, spaced apart relationship. Braking plate fins are disposed between the inwardly facing surfaces of the braking plates forming a plurality of braking plate vents between the braking plates. The rotor includes an airflow director having an annular flange extending generally radially inwards from the radially inner end of one of the braking plates. The flange includes an inner surface forming an angle with respect to the inner surface of the other braking plate such that the distance between these inner surfaces increases as the flange extends radially inwards. A plurality of director fins are disposed between the flange and the inner surface of one of the braking plates.

Abstract: A bicycle disc brake caliper is provided with a detachable cooling system that transfers heat away from the actuating fluid. Basically, the bicycle disc brake caliper has a housing and a piston unit, with a coolant member of the cooling system attached to the housing. The housing has a frame mounting member sized to be coupled to a portion of a bicycle frame. The piston unit is movably coupled to the housing between a release position, in which the piston unit is spaced from a brake disc mounted to a wheel of a bicycle, and a braking position, in which the piston unit engages the brake disc of the bicycle wheel. The coolant member has a coolant area for receiving coolant to create a coolant heat sink that transfers heat from the housing. The housing has an actuating passage in fluid communication with the piston unit to move the piston unit via an actuating fluid. In one embodiment, the cooling system includes a pump and a reservoir.

Abstract: A ventilated disc brake rotor has first and second discs separated by radially extending ribs. The first disc has a thin wall section, and a peripheral thick wall section having an increased wall thickness increased by a raised portion raised from the inside surface of the first disc toward the second disc. The thick wall section extends radially from the outer periphery over a radial range of about ⅓ of the radial width of the braking friction surface of the first disc.

Abstract: A convertible aircraft brake assembly (10, 60, 77, 78, 83, 85, 96, 120, 130) designed as original equipment to have heat sinks comprising a steel heat sink (20, 70, 80, 90, 91, 100, 110, 122) aircraft brake assembly and a carbon-carbon composite heat sink (40) aircraft brake assembly. When the aircraft brake assembly is converted from one type of heat sink to the other, the conversion is accomplished with minimal changes in component parts. The conversion can be accomplished without any changes in the piston housing (14), torque tube (12), and wheel (30) because the heat sinks include therein respective components which enable each heat sink to be utilized with the commonly used piston housing (14), torque tube (12), and wheel (30).

Abstract: The present invention provides a wet type multi-plate friction engaging apparatus in which axially shiftable outer tooth plates provided on an inner peripheral surface of a drum, and inner tooth plates disposed within the drum and spline-connected to an outer peripheral surface of a hub having lubricating oil supply holes open to the outer surface of the hub are arranged coaxially and alternately, so that the outer tooth plates and the inner tooth plates can be frictionally engaged with each other between a piston disposed at a closed end of the drum and a flange disposed at an open end of the drum by an urging force of the piston, and wherein the drum is not rotated or rotated at a low speed, and friction material are adhered to only the outer tooth plates or the outer tooth plates and the flange.

Abstract: A motorcycle chassis embodies novel techniques, geometries, and configurations to provide enhanced performance, including new techniques to enhance braking performance. A first feature facilitates the application of braking force to each wheel in proportion to its traction capability. Maximum deceleration rates are provided prior to wheel lockup. A second feature applies liquid cooling to a brake disk. Liquid cooling eliminates brake fade caused by overheating of the brake pad material. Aerodynamic control features in concert with unique component arrangement better protect the rider from wind forces and also reduce aerodynamic drag. Narrow steering bars enclosed by bodywork and deep leg notches in the fairing contour largely remove rider induced air flow trips. The leg notches serve to brace the rider during deceleration, unloading his wrists from much of the braking force. An exhaust system routed over the engine permits a totally smooth body undercarriage to reduce aerodynamic drag.

Abstract: A brake disk for a motor vehicle, particularly made of a fiber-glass-reinforced material, includes two disk elements with ribs forming air ducts, which can be connected with one another. The ribs of the disk elements have mutually corresponding hook-type connections on opposite front surfaces.

Abstract: The present invention discloses a vented brake rotor having tubular ducts. The rotor includes universal rotor blank having a hat section and a peripheral section radially extending therefrom. The hat section includes a mounting face and hat wall extending from the periphery of the mounting face. The peripheral section includes a first and a second braking plate joined together in a parallel, spaced apart relationship by a plurality of spacers. A plurality of duct tubes are fastened to the inner surfaces of the braking plates. Each one of the duct tubes has an inlet and an outlet allowing air to flow through the duct tube to provide an airflow path between the braking plates for cooling the rotor. In an alternate embodiment, the present invention may include a plurality of fins fastened to the inner surfaces of the braking plates. The fins extend between the braking plates forming a passages between them. A plurality of duct tubes are fastened in the passages between the fins.

Abstract: A friction device includes a fixed housing and a driven member which ise rotatable about a common axis. The assembly also includes a friction disc pack operable to connect and disconnect the driven member for transferring and interrupting torque therebetween. A piston assembly is supported in the clutch housing and defines an expandable chamber. The piston assembly is responsive to the pressure of fluid in the expandable chamber to move between disengaged and engaged positions thereby actuating the pack to connect and disconnect the driven member. The pack is disposed within a grounded housing that includes a sealed circumferentially arranged opening defining a coolant chamber for supplying convergent flow cooling to the pack from the OD to the ID thereof.