Abstract: A sheave which can be connected to the output shaft of an internal combustion engine in a motor vehicle has a rotary input element, an output element which is coaxial with and rotatable relative to the input element and is provided with a rim for one or more endless belts or chains, one or more bearings between the input element and the output element, a damping unit which opposes rotation of the two elements relative to each other, and an inertial damper which is connected between the output shaft and the input element. The inertial damper has a ring-shaped mass which is at least partially surrounded by and is closely adjacent the rim. The rim, the inertial damper and the damping unit are interfitted in the axial direction of the sheave to contribute to compactness of the sheave.

Abstract: A damper for use in a hydraulic clutch actuator to attenuate vibrations transmitted from the crankshaft of the engine of the associated vehicle to the clutch pedal. The baffle includes an elongated cylindrical housing positioned in the conduit interconnecting the master and slave cylinders of the actuator coaxial with the axis of the conduit and including a spring biased piston mounted in the bore of the housing. The housing is open at its rear end and closed at its front end by an end wall defining an outlet port for the damper and the piston includes a central through passage defining the inlet port of the damper at the rear end of the through passage. A baffle is provided at the front end of the piston to provide a circuitous path between the central passage of the piston and the outlet port of the damper.

Abstract: An aircraft wheel and brake assembly having an axle with a circular flange in abutting contact with an annular viscoelastic vibration dampening plate which in turn abuts an annular flange of a torque tube. The flanges are rigidly secured to the dampening plate which is solid. The torque tube supports for axial movement a Plurality of stator discs which are interleaved with a plurality of rotor discs, such rotor discs being axially slidable but connected to the rotatable wheel and wheel support which is journaled for rotation on the axle. Variations of the location of such dampening plate include locating such plate between the torque tube and the motive drive piston which actuates the frictional engagement of the rotor and stator discs to effect a braking action.

Abstract: As a torque transmitting member, an annular resilient disc interconnects a crankshaft and an annular flywheel. The crankshaft has an axially extending cylindrical wall in opposed and spaced relationship to an inner peripheral wall of the annular flywheel. For reducing vibrations of annular resilient disc, an elastic annular body has an inner peripheral wall fixed to the crankshaft and an outer peripheral wall opposed to the inner peripheral wall of the flywheel. A heat insulating ring or heat insulating pieces are provided to reduce transmission heat from the flywheel to the elastic annular body. Alternatively, a heat insulating space or spaces may be provided.

Abstract: A torsion damper comprises two coaxial parts, one of which comprises a damper plate and a hub, coaxial with each other and having respective complementary sets of teeth. A resilient member in the form of a shock absorbing ring is provided in the same coaxial part of the damper and is coupled in rotation to the damper plate. The shock absorbing ring comprises at least one substantially rigid first member, on which the set of complementary teeth is formed, together with at least one resiliently deformable second member for coupling in rotation with the damper plate.

Abstract: A torsion damping device comprises two coaxial parts, one of which consists of a damper plate and a hub coaxial with the damper plate, the hub and damper plate having cooperating teeth defining a circumferential clearance between them so that the hub and damper plate are able to undergo a limited relative angular displacement which is defined by a circumferential clearance between the two sets of teeth.A ring extends parallel to the damper plate and has a further set of teeth, of resilient material, complementary to the hub teeth and meshing with the latter so as to define a further circumferential clearance between the resilient teeth and the hub teeth. This further circumferential clearance is smaller than that between the two sets of teeth of the damper plate and the hub themselves. In addition, the set of teeth on the hub is extended axially so that it can mesh with the teeth on both the damper plate and the ring.

Abstract: A transmission clutch, for releasably coupling a driven shaft to a driving shaft, comprising a driving part and a driven part, with the driving part including a reaction plate while the driven part includes a hub which is fixed to the driven shaft for rotation of the latter therewith. A dynamic vibration damper (dynamic absorber) is carried by the hub and includes a secondary plate and a radial support plate, which is secured to the hub and which carries a friction liner for frictional cooperation with the secondary plate. The radial support member is coupled to the hub both axially and in rotation, and carries a block of resilient material which is fixed to the friction liner, being interposed between the latter and the radial support member.

Abstract: A massive, stiff disc brake rotor is provided which is modified by providing cuts through part or all of the rotor section having the friction braking surfaces. In a preferred embodiment, the cut has an interlocking conformation so that there is less potential for radial distortion of the disc under heavy centrifugal loads. The cut allows the rotor to vibrate axially while interrupting the propagation and amplification of circumferential waves, letting the rotor act more like a diametral spring instead of a bell. Depending on rotor inertia and braking forces to be applied, the cut can extend axially through parts of the rotors, or only partially through one or more rotor parts.

Abstract: A transmission clutch, for releasably coupling a driven shaft to a driving shaft, comprises a driving part and a driven part, with the driving part including a reaction plate and the driven part including a hub which is fixed to the driven shaft for rotation with the latter. The clutch includes a dynamic absorber associated with the hub and carried by the pressure plate.The dynamic absorber comprises an input part carried by the inner periphery of the pressure plate, with a bearing being interposed between this input part and the inner periphery of the pressure plate. The absorber also has an output part and a disengageable rotatable coupling between the output part and the hub. This coupling couples the output part of the dynamic absorber rotatably with the hub when the clutch is engaged.

Abstract: An industrial clutch has a diaphragm spring (40) which over-centers between full engagement and full disengagement. The clutch cover (12) has an abutment (64) which abuts the diaphragm spring (40) when the clutch is disengaged to prevent vibration of the diaphragm spring.

Abstract: A drum brake assembly has brake shoes 2 and 3 within a rotatable drum 1. The shoes 2 and 3 are displaceable to effect braking by an hydraulic ram 7 and free ends 9 of the shoes react against an abutment 10. This reaction is effected through a layer of viscoelastic damping material and metal plate laminate 110 which may be carried by either the brake shoes or the abutment 10. The viscoelastic layer may be bonded between steel plates and secured by a spring clip to either the brake shoe or the abutment 10. Alternatively the viscoelastic layer may be bonded to the abutment 10. The laminate 110 can be accommodated within a recess in the abutment 10. The provision of the viscoelastic layers through which the brake shoes react on the abutment 10 alleviates the development of noise or squeal during use of the brake assembly.

Abstract: A spot-type disc brake, in particular to a disc brake straddling the brake disc internally in which a brake and essential assemblies required for that brake and a process for mounting of such a brake are provided. Particular mounting arrangements allow each of the brake shoes to be removed in a radial direction without having to disassemble the housing or parts of the housing.

Abstract: A coupling assembly component transmits force between a pair of elements and dampens the transmission of vibration between the elements. The coupling assembly component includes an annular base which is adapted to be connected with one of the elements. An annular fluid extensible tube is coaxial with the base and is extensible under the influence of fluid pressure in the tube to move friction surfaces into engagement. The tube includes a reinforcing layer which is enclosed by a cover layer formed of an elastomeric material. An annular layer of vibration damping material is molded between and is bonded to the cover layer of the tube and the base. The layer of vibration damping material and cover layer have different vibration damping characteristics. The layer of vibration damping material has a radial extent which is at least twice as great as the radial extent of a portion of the cover layer disposed between the reinforcing layer of the tube and the annular layer of vibration damping material.

Abstract: A damper for use with a hydraulic clutch actuator of the type including a master cylinder and a slave cylinder with a conduit interconnecting the outlet of the master cylinder and the inlet of the slave cylinder. The damper is positioned in the conduit between the master cylinder and slave cylinder and includes a diaphragm having a front face constituting a barrier wall of the hydraulic system so that the diaphragm can deflect in response to vibrations transmitted through the hydraulic fluid in the system to effect damping of the vibration and further includes a structure confronting but spaced from the rear face of the central region of the diaphragm which operates to limit the deflection of the central region of the diaphragm to a predetermined maximum magnitude to limit the stress at the center of the diaphragm to an acceptable level and thereby improve the fatigue life of the diaphragm.

Abstract: A centrifugal clutch apparatus includes an annular adapter assembly adapted for colinear connection with a rotatable driving member, an independent pulley member connected with a colinearly arranged driven member having an annular portion extending toward the adapter assembly, and centrifugal weight members connected with the adapter assembly for engagement with the inner surface of the annular portion when the rotational velocity of the driving member exceeds a given value, the adapter assembly including at least one vibration dampening device including an annular resilient member connected between annular inner and outer concentrically-arranged portions of the adapter assembly for isolating the centrifugal weight members from the driving member.

Abstract: An improved coupling assembly includes a polyurethane bushing which cooperates with a friction disc to transmit force. The polyurethane bushing reduces noise caused by components of the coupling assembly and reduces the maximum rate of acceleration between elements of the coupling assembly. The polyurethane bushing has a durometer hardness of approximately 92 Shore A and a Bayshore rebound of 20% to 50%. The maximum rate of acceleration between elements of the coupling assembly is less than 30 times the acceleration of gravity while the coupling assembly transmits a torque load which cyclically varies between at least +12,500 pound inches and at most -2,500 pound inches during rotation of elements of the coupling at a speed of at least 645 revolutions per minute. During the transmission of the aforementioned cyclically varying torque load by the coupling assembly, peak noise level caused by components of the coupling assembly is less than 103 decibels and is less than 3.0 Pascals.

Abstract: Method and apparatus for damping the effects of cyclic engine speed variations on the splines of a driving hub and the mating splines of a shaft driven by the hub. A caliper-like retaining mechanism includes a retaining nut threadedly engaging the distal end of the shaft, which distal end is journaled through a splined bore of the driving hub. A shoulder washer is disposed about the shaft proximate the hub shoulder, which shoulder washer is secured to the shaft by the retaining nut. A disc spring urges the shoulder washer into frictional engagement with the hub, which disc spring is retained in a circular groove within the hub. A predetermined preload is exerted by the disc spring on the shoulder washer, which preload is sufficient to overcome the forces which tend to induce rattle between the splines of the shaft and the corresponding splines of the hub.

Abstract: An electromagnetic clutch according to the present invention includes a first rotatable member which is rotatably supported on a first bearing. The first rotatable member is connected to an external driving source and has an axial magnetic end plate. A second rotatable member is connected to a driven member. An annular magnetic member is supported on the second rotatable member through a plurality of leaf springs so as to be capable of axial movement and faces the axial end plate of the rotatable member with an axial gap therebetween. A third rotatable member is connected to the second rotatable member to limit the axial movement of the annular magnetic member. An electromagnet is associated with one of rotatable members and the annular magnetic member for transmitting rotational force from the external driving source to the other of the rotatable members by pulling the annular magnetic member into contact with the end plate. A coupling device couples the annular magnetic member to the third rotatable member.

Abstract: A damper for use in a hydraulic clutch actuator to attenuate vibrations transmitted from the crankshaft of the engine of the associated vehicle to the clutch pedal. The baffle includes an elongated cylindrical housing positioned in the conduit interconnecting the master and slave cylinders of the actuator coaxial with the axis of the conduit and including a spring biased piston mounted in the bore of the housing. The housing is open at its rear end and closed at its front end by an end wall defining an outlet port for the damper and the piston includes a central through passage defining the inlet port of the damper at the rear end of the through passage. A baffle is provided at the front end of the piston to provide a circuitous path between the central passage of the piston and the outlet port of the damper.

Abstract: A fluid coupling includes a casing supported by a drive shaft, a cover fixed to the casing to form a chamber, a partition plate fixed to the cover to partition the chamber into a reservoir and an operation chamber, a rotor disposed in the operation chamber, a valve plate operated to open or close a passage provided in the partition plate, a stud supported by the cover and fixed to the valve plate and a bimetal spring fixed to the stud on an inner end and to the cover on an outer end thereof. A damper is disposed between the cover and the bimetal spring and includes a rubber block and a bracket fixed to a part of the cover. The damper prevents the vibration and breakage of the bimetal spring.

Abstract: Device for reducing mechanical rattle in a splines connection between a shaft (15) and a sleeve element (4) surrounding the shaft, especially between the input shaft to a vehicle gearbox and the hub sleeve of the clutch disc. The device consists of a metal washer (6) with less backlash against the splines (16) of the shaft (15) than the hub sleeve. The washer is biassed by means of a spring washer (8) against a frictional surface (10) of the hub sleeve. The frictional torque is selected so that the washer when shifting between normal engine drive and engine braking rotates relative to the hub sleeve, but is fixed relative thereto when idling.

Abstract: A retractable mirror apparatus according to this invention comrises: a base; a retraction shaft held on the base; a mirror frame having a mirror mounting portion and engaged with the retraction shaft rotatably by a predetermined angle; a gear held rotatably on the retraction shaft and having engaged concave portions or engaged convex portions on the end surface thereof; a motor for rotating the mirror frame disposed in the mirror frame; a claw clutch fixed on the retraction shaft and having engaging convex portions or engaging concave portions engageable and disengageable with the engaged concave portions or the engaged convex portions of the gear in the area thereof facing the engaged concave portions or the engaged convex portions of the gear, wherein the gear or the claw clutch further comprises cushioning member disposed in a manner elastically contacting with the other one of the gear and the claw clutch or in a manner elastically contactable with the other one of the gear and the claw clutch.

Abstract: The center loop anti-rattle spring (50) comprises a pad biasing plate (52) which biases disc brake pads radially inwardly to prevent rattling. The pad biasing plate (52) has at one axial edge (55) a loop arm (56) which extends around approximately 270.degree. in order to position an axially extending axial arm (58) orthogonally relative to the pad biasing plate (52). The axial arm (58) extends into circumferentially extending ear members (62) each having an opening (64) for receiving a pin (60) which connects the spring (50) to a torque support member (18). Each ear member (62) extends into a radial retention tab (66) which extends axially under an arm end (22) of the torque support member (18). The pad biasing plate (52) has oppositely disposed corner recessed areas (54) for reception of the radial retention tabs (66). The axial arm (58) includes a center notch (63) for receiving a base portion (57) of the loop arm (56) during manufacture of the spring.

Abstract: A control cable system with a device for damping vibration comprising a control cable an end of which is connected to a vibration source, a vibration member connected to another end of the control cable and a dynamic damper. The dynamic damper is attached on an element of the control cable and is tuned to have a special frequency characteristic. That is, the tuned damper vibrates when it receives a vibration having a frequency in a range including a plurality of resonance frequencies of the vibration member, and the damper resonates in response to a special resonance frequency in the range.

Abstract: A damping mechanism for clutch disc for use in an automobile clutch, including an axially compressible cushioning plate supporting a facing in between a flywheel and a pressure plate. In order for minimizing "resonance sound" of the cushioning plate due to axial vibration, a damping member for controlling the axial vibration of the cushioning plate is installed between the cushioning plate and the clutch plate.

Abstract: A spring clip is constructed in a folded manner so as to be slipped over a peripheral edge of a clutch plate and attached thereto. The sides of the folded spring clip include fastening sections for receiving therein the clutch plate edge and having inwardly bent tabs which interlock with a hole in the clutch plate for providing a secure attachment thereto. Each spring clip has outwardly directed engaging sections for biasing neighboring clutch plates to reduce flutter.

Abstract: An anti-vibration system (10) for the foot pedal (11) of a hydraulic clutch release system (9) utilizes a pulse dissipating canister (30) interposed between a first conduit portion (20) and a second conduit portion (21). The first conduit portion (20) communicates between a slave cylinder (22) and the canister (30), and the second conduit portion (21) communicates between a master cylinder (15) and the canister (30). The canister (30) has a hollow interior chamber (31), which is axially bounded by laterally spaced, circular front and rear walls (32 and 34, respectively) and circumferentially bounded by an annular wall (34) which extends between the front and rear walls (32 and 33) to define the outer periphery of the canister (30). The first conduit portion (20) communicates with the hollow interior chamber (31) of the canister (30) through the center portion of the front wall (32).

Abstract: There is provided a device for use with a rotary vibration damper, particularly in a piston engine, which varies the flow volume rate of a liquid damping medium. Spur gears are supported in a planetary gear type system in the cylindrical casing of the damper, the spur gears being connected to one of the engine drive shaft or the damper output shaft. The spur gears form a gear pump for a closed circuit of the damping medium and mesh with a central spur gear mounted on the other one of the engine drive or the damper output shaft. A reservoir chamber for the damping medium is provided in the conveying conduit on the pressure side having an elastically variable volume. A piston valve is provided in the conveying conduit on the pressure side which is controlled as a function of the engine speed or revolutions wherein the piston, by its axial position, is adapted to vary the cross section of the conveying conduit and thereby serve as a throttle member.

Abstract: A disk brake assembly which includes a rotary brake disk rotatable with a wheel in a body, a mounting member fixed to a stationary member of a vehicle, a guide member disposed in parallel with an axial direction of the brake disk and fixed at one end portion to the mounting member, a caliper member having a tubular portion slidably supported on the guide member to be movable in an axial direction, and the caliper member straddling a portion of the brake disk and having a fluid actuator provided with a piston on one side thereof to press a first brake pad against one face of the brake disk and a reaction portion on the opposite side thereof to press a second brake pad against the other face of the brake disk.

Abstract: A flywheel assembly comprises a first input flywheel (12); a clutch disk (14) connected to an output shaft (70) and adapted to selectively engage with the first flywheel (12); a second flywheel (26) concentrically and rotatably arranged with respect to the first flywheel (12) and having a predetermined mass; an elastic damper (28) connecting both flywheels together; a first frictional damper mechanism (50) adapted to operate between the second flywheel (26) and the clutch disc (14) only when the clutch disk (14) is engaged with the first flywheel (12); and a second frictional damper mechanism (60) arranged axially between the flywheels and adapted to operate between both flywheels (12, 26) only when the clutch disk (14) is released from the first flywheel (12).

Abstract: A separated type flywheel assembly having a first flywheel and a second flywheel, a damper mechanism which damps vibration by the spring force and a friction damping mechanism which damps vibration by the friction force, a clutch engaging and disengaging lever slides the clutch disc pressure plate in clutch engaging mode and, in the clutch disengaging mode, disengages the friction damping mechanism from driving engagement with the clutch disc spline hub for transmitting power of the second flywheel to the spline hub of the clutch disc and connects the second flywheel with the first flywheel to prevent a resonance phenomenon.

Abstract: A torque converter provided with a vibration damper includes an input member, an pump connected to the input member, a turbine located between the pump and the input member, a lock-up clutch disk frictionally engagable with the input member, an output shaft connected to the turbine and the lock-up clutch disk, and a damper mechanism disposed between the radially outer portions of the turbine and the lock-up clutch disk. The damper mechanism includes a damper weight rotatably and concentrically arranged with respect to the input member and the output shaft, a centrifugal clutch including an output member, a centrifugal weight adapted to be frictionally engaged with the output member by a centrifugal force and a weight support fixed to the turbine and radially movably supporting the centrifugal weight, and a damper spring circumferentially connecting the output member of the centrifugal clutch to the damper weight.

Abstract: In an electric motor regulating and control drive, especially for industrial sewing machines, a clutch-brake disk is mounted for co-rotation on an output shaft and has a clutch facing which can be brought into engagement with a clutch surface of a flywheel of the corresponding motor, and has a brake facing which can be brought into engagement with a brake surface of a brake-bearing plate. In order to achieve by simple means an effective suppression of impact noises when a braking action is initiated, at least the brake facing is mounted with damping with respect to the armature ring of the clutch-brake disk. It is preferably thrust against the armature ring by means of at least one annular spring.

Abstract: A fly-wheel includes a first part and a second part. Both parts are rotatably mounted with respect to the other. Torsional springs are provided in torque-transmitting engagement between the two parts of the fly-wheel. Further, a friction device is provided between the two parts. This friction device is controlled by fly weights and a biasing spring such that below the idling rpm of an internal combustion engine driving the fly-wheel the friction device maintains an increased frictional torque-transmission between the two part.

Abstract: Method and apparatus for securing an electric brake/clutch (14) against rotation relative to a stationary member (10). A preferred system includes an anti-rotation lever (26) attached to and extending from a brake/clutch housing (16). Anti-rotation lever (26) includes a flange (32) at its free end. Flange (32) is situated between a pair of spaced opposed rubber bumpers (34) attached to stationary member (10). Thus, torque applied to the housing (16) of brake/clutch (14) is transmitted through anti-rotation lever (26), rubber bumper (34), and ultimately to stationary member (10). The distance between rubber bumpers (34) exceeds the thickness of flange (32), whereby anti-rotation lever (26) and housing (16) can radially float relative to stationary member (10), thereby permitting "runout" of brake/clutch assembly (14).

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).

Abstract: A flywheel assembly having an outer peripheral part of a first flywheel engaged with or disengaged from a clutch disc connected to a crank shaft by a relatively thin connecting plate disposed along an end face of a second flywheel opposite to the clutch disc, an outer periphery supporting mechanism supports a damper inertial part of the second flywheel relative to the first flywheel in a circumferentially rockable manner, a torsion damper mechanism resiliently connects the damper inertial part to a friction damping mechanism is installed in an inner peripheral part of the damper inertial part of the second flywheel, the torsion damper mechanisms are rotatably supported on the crankshaft by a bearing, a pressure surface on which a friction member of the friction damping mechanism presses is formed on a part of the torsion damper mechanism, the friction member being fixed to a substantially annular friction plate axially slidable on a spline hub of the clutch disc and a spring member urging the friction plate a

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 friction clutch includes side plates connected to an output hub and being adapted to receive a torque through a friction facing from a flywheel of an engine, and a clutch cover supporting a control mechanism of the clutch. At least one of the clutch cover and the side plates is integrally provided at outer peripheral portions with small portions which are surrounded by a groove and a slot connected to the groove so that one or more of the small portions can be removed for balancing the clutch in an unbalance-correcting process. The side plates are rigidly connected together by stop pins and are connected to the hub through springs disposed in openings formed in the side plates and a radial flange of the hub. One of the side plate is provided at outer peripheral portions circumferentially between the openings and the stop pins with the small portions.

Abstract: A support element for a clutch lever for motor vehicles wherein the clutch lever is supported at a pivotal point on one hand and is engaged by an actuator on the other hand and acts on a clutch release bearing longitudinally moveable on a guide tube which extends coaxially to the axis of a friction clutch, characterized in that a dampening element (16,21,24,26,29) made of polymeric material is provided at the pivotal point (6) which is designed and cooperates with the clutch lever (5) in such a manner that vibrations of the clutch lever (5) about a longitudinal axis extending through pivotal point (6) on the one hand and the point of contact (15) of the an actuator (12) on the other hand are prevented or absorbed.

Abstract: The power train between the crankshaft of the internal combustion engine and the input shaft of the change-speed transmission in a motor vehicle has two coaxial flywheels and a two-stage slip clutch between the flywheels. The magnitude of torque which is transmitted by the slip clutch is variable in response to changes in centrifugal force acting upon a diaphragm spring for one stage of the slip clutch. The slip clutch damps and absorbs those peaks of fluctuations of angular displacement of one of the flywheels relative to the other flywheel which are attributable to fluctuations of torque transmitted by the engine.

Abstract: A damper is attached to a diaphragm spring in a clutch. The diaphragm spring includes a portion supported by a fulcrum which is rigidly connected to a flywheel, a portion connected to a pressure plate for pressing a clutch disc onto a flywheel, a portion adapted to connect to a release bearing, a plurality of radial slits extending from the inner periphery of the spring to the radially middle portion thereof and a plurality of radial fingers circumferentially divided by the slits. The damper includes a vibration damper member made from nonmetallic material and attached to said fingers. The damper member may have an annular shape extending along the diaphragm spring and be seated on surfaces of the fingers.

Abstract: A split flywheel for reducing the transmission of vibrations from the engine to the drive shaft at certain frequencies of the flywheel is provided. Included are two flywheel elements drivingly connected to one another wherein one of which is connected or can be connected in a driven manner to the engine and the other of which is connected or can be connected in a driven manner to the drive line. The resonant frequency of the split flywheel unit is well below the frequency of engine vibrations which occur during normal traveling, so that only slight amplitudes of vibration occur between the flywheel elements during normal travel operation. However, during start-up of the engine, the resonant frequency of the flywheel is passed through. The drive connection between the elements a slip clutch having a greater friction contact than the maximum torque of the engine, placed in series with a spring mounting and positioned between the two flywheel elements.

Abstract: A vibration isolator for an automobile clutch operating system having a clutch pedal in the automobile, a clutch release arm on the transmission, and an interconnecting mechanism therebetween, such as a cable, wherein a dynamic damper is mounted on one of clutch system moving components. The dynamic damper includes a damper weight and a resilient material, such as rubber, connecting the weight to the clutch system moving component.

Abstract: An anti-squeal shim interposed between a brake pad with a backing plate attached thereto, and a piston of circular transverse cross sectional shape, in a disc brake wherein the piston is slidably received in a cylinder portion of a caliper such that the centerline of the piston is parallel to an axis of rotation of a disc rotor, the piston being moved with a brake fluid pressure applied to the cylinder portion, and urging the brake pad against a friction surface of the disc rotor to thereby restrain a rotary movement of the disc rotor. The anti-squeal shim is gripped, upon application of the brake fluid pressure to the cylinder portion, only by radially-outer portions of opposite abutting surfaces of the piston and the backing plate which are spaced from the centerline of the piston in a radially outward direction of the disc rotor.

Abstract: An electromagnetic spring-wound clutch for a refrigerant compressor includes a coil-wound spring disposed around a pulley and having one end connected to an armature plate and cover plate. The cover plate is connected to a hub which is fixed on the outer end of the drive shaft of the refrigerant compressor through an elastic member. The elastic member is closely fitted in a polygonal-shaped air gap defined between the cover plate and hub. As a result, the impact force generated when the coil-wound spring is wound around the pulley during transmission of rotating motion is absorbed by the elastic member instead of the hub and drive shaft of the refrigerant compressor to thereby increase the life and durability of both the electromagnetic clutch and the refrigerant compressor.

Abstract: A friction clutch comprises holes bored in a pressure plate. The holes are bored parallel to the center line of the clutch. A roll pin extends parallel to the center line and is slidably press fitted into each of the holes. The roll pin is supported in a pressure contact at both ends between the flywheel and the clutch cover. The roll pin may have a disk-shaped highly rigid friction material at one end.

Abstract: The invention relates to spring (40) for a disc brake. The spring is mounted elastically in an opening (68) of a caliper and exerts on the support plates (26, 28) a radial force (F1) as well as a tangential force (F'5) ensuring that the plates assume a preferred lateral position. The spring (40) comprises a metal leaf with two main arms (42, 44) connected to each other and to a central arm (48) by a main fold (46), the spring having the general shape of a "trident", the end prongs of which comprise the main arms (42, 44), the latter cooperating by way of their free ends (50) with a surface (52) formed on the caliper (10) and by way of central portions (54) with bearing surfaces (56) formed on the support plates, the central arm (48) having at its free end (62) a Z-shaped fold cooperating with two surfaces (64, 66) of the caliper, the main fold (46) having a lug (74) cooperating radially with another surface (76) of the caliper (10).

Abstract: A clutch brake for use with non-synchronized vehicle transmissions includes noise suppression components. The clutch brake comprises a pair of housing members secured together which receive components of a torque limiting assembly. The assembly includes an inner ring member adapted to rotationally engage the transmission drive shaft and which is coupled to a concentric, outer ring member through a lost motion coupling. The outer ring, in turn, is frictionally coupled to the housing by an adjacent wave spring which includes inwardly directed tabs. The tabs exert a biasing force against the inner ring member, inhibiting wholly unrestricted motion which might generate undesirable vibration and noise.

Abstract: A split flywheel for reducing the transmission of vibrations from the engine to the drive shaft at certain frequencies of the flywheel is provided. Included are two flywheel elements drivingly connected to one another wherein one of which is connected or can be connected in a driven manner to the engine and the other of which is connected or can be connected in a driven manner to the drive line. The resonant frequency of the split flywheel unit is well below the frequency of engine vibrations which occur during normal traveling, so that only slight amplitudes of vibration occur between the flywheel elements during normal travel operation. However, during start-up of the engine, the resonant frequency of the flywheel is passed through. The drive connection between the elements a slip clutch having a greater friction contact than the maximum torque of the engine, placed in series with a spring mounting and positioned between the two flywheel elements.