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| Number | Title | Issue Date |
| 6918468 | Automatic drum brake adjuster locked at a high temperature A brake adjuster for adjusting the working clearance of the shoes of an automotive drum brake, the adjuster including three co-axial elements a first rod element (25) having a head portion for engagement with a first brake shoe and a threaded stem portion, an... | 07/19/2005 |
| 4653615 | Automatic wear adjuster for drum brakes A wear adjuster for an internal shoe drum brake of the kind having a strut extending between one shoe and a handbrake lever pivoted on the other shoe includes a spacer between the strut and the one shoe, a screwing mechanism for adjusting the spacing effe... | 03/31/1987 |
| 4518064 | Clutch control means A vehicle transmission clutch control including an electronic logic control which controls the transmission gear selection, a clutch position signal generator responsive to vehicle operating parameters to produce a command signal which operates a clutch c... | 05/21/1985 |
| 4497397 | Clutch control system A vehicle electronic control system for a friction clutch having a clutch position signal generator which senses the vehicle operating conditions and produces a command signal which dictates the state of engagement of the clutch. A clutch actuator control... | 02/05/1985 |
| 4497175 | Hydraulic master cylinder A hydraulic master cylinder has pistons displaceable along the pivot axis of a brake pedal to apply the vehicle brakes. Motion between the pedal and the pistons is transmitted by balls located in a respective arcuate track formed partly in the pedal and p... | 02/05/1985 |
| 4481843 | Automatic transmission A control system for a rotary transmission for controlling pressure during speed ratio changes. The system includes a pump for delivering fluid under pressure which fluid selectively engages speed ratio selectors to enable the drive to be transmitted thro... | 11/13/1984 |
| 4473143 | Clutch control means An electronic control for a vehicle transmission having a clutch, the engagement of which is controlled in response to a clutch engagement signal. An electronic speed ratio logic for selection of the appropriate transmission gear ratio can produce a disen... | 09/25/1984 |
| 4444297 | Control system for a fluid pressure engaged clutch Fluid pressure for engagement of a clutch is controlled by a valve alternating between supply and drain conditions in response to a high frequency electrical square wave signal. The valve produces a low flow pilot pressure signal which controls clutch eng... | 04/24/1984 |
| 4442924 | Internal shoe drum brakes An internal shoe drum brake having a pair of brake shoes mounted on a back plate with double ended expanders located one between each pair of adjacent ends of the shoes. The expander has a strut assembly slidable within itself so that when the expander is... | 04/17/1984 |
| 4432445 | Clutch control systems A vehicle automatic clutch control has an engine speed sensor that produces an electrical signal indicative of engine speed, an electrical reference signal generator that produces a reference signal, a throttle position sensor that produces a signal indic... | 02/21/1984 |
| 4431088 | Internal shoe drum brake adjusting device An internal shoe drum brake automatic adjuster comprising a strut extending between one brake shoe and a wedge, mounted between the strut and an abutment on a second brake shoe. The wedge is spring loaded to increase the spacing between the adjacent end o... | 02/14/1984 |
| 4418810 | Clutch control system An electronic control system for a motor vehicle friction clutch and which has an electrical reference signal generator, an engine speed sensor and signal means, and a throttle position sensor which produces a signal indicative of throttle opening. The th... | 12/06/1983 |
| 4416356 | Hydraulic wheel cylinder assemblies and drum brakes incorporating same A hydraulic wheel cylinder assembly is particularly for use in a drum brake of the kind in which the wheel cylinder assembly is interposed between one pair or adjacent ends of a pair of brake shoes and a mechanical expander and fixed abutment is interpose... | 11/22/1983 |
| 4413714 | Clutch control system An electronic control system for a motor vehicle friction clutch and which has an engine speed sensor, a reference signal generator, and a clutch actuator responsive to an error signal E derived from engine speed and reference signals V1 and V | 11/08/1983 |
| 4412461 | Rotary transmission electronic control system providing automatic changes of speed ratio A control system is provided for a rotary transmission having a set gear trains and two clutches independently operable and providing alternative drive paths through the gear trains from an input to an output, alternate gear trains in the set being driven... | 11/01/1983 |
| 4407125 | Liquid pressure apparatus Friction clutch release apparatus for a motor vehicle comprises a driver-operable master cylinder, a slave cylinder and a conduit which connects the master outlet to the slave cylinder inlet. A liquid reservoir communicates with the bore of the master cyl... | 10/04/1983 |
| 4405041 | Clutch release mechanism for a pull type clutch A clutch release mechanism for a pull type friction clutch for automobiles having a gearbox with a sleeve surrounding its input shaft. The mechanism comprises a release bearing assembly, a release fork and an automatically connectable and disconnectable c... | 09/20/1983 |
| 4403682 | Clutch control apparatus A vehicle automatic clutch control comprising an engine speed sensor that produces a signal V1, an electrical reference signal generator that produces a signal VR and a comparator that processes the two signals V1 and V | 09/13/1983 |
| 4398623 | Internal shoe drum brake adjusting device An internal shoe drum brake automatic adjuster comprising a strut extending between one brake shoe and a wedge mounted between the strut and an abutment on the other brake shoe. The wedge is spring loaded to increase the spacing between the adjacent end o... | 08/16/1983 |
| 4393968 | Clutch release bearing assemblies A release bearing assembly for a pull type clutch and which includes a stem attached to the stationary race of its bearing and which is accommodated between two arms of a release fork. The stem has a flange against which the arms abut during release of th... | 07/19/1983 |
| 4391162 | Fluid assisted booster A vacuum assisted booster having an input rod with a thrust member thereon, an output rod with a piston head thereon, and an elastomeric disc located between the thrust member and the piston head. The piston head has an axial bore therein and the thrust m... | 07/05/1983 |
| 4378676 | Booster for a hydraulic clutch system An air/hydraulic servomotor unit for providing power assistance for a clutch hydraulic operating system and comprising a compressed air cylinder, a hydraulic slave cylinder, a load proportioning means that determines what ratio of the unit output is deriv... | 04/05/1983 |
| 4375251 | Automatic wear adjuster for drum brakes An internal drum brake of the kind including a strut between a hand brake lever pivoted on one shoe and the other shoe, has a wear adjuster comprising a pair of screw-threaded members with a pawl and pawl wheel for relative rotation thereof on operation o... | 03/01/1983 |
| 4358163 | Brake pressure modulating valve A vehicle brake system fluid modulating valve has a main piston acted upon by a control spring and master cylinder pressure on one hand and an opposing brake system on the other hand. A slave piston is also acted upon by the master cylinder pressure, and ... | 11/09/1982 |
| 4354586 | Friction clutch driven plate This invention relates to friction clutch driven plates in which the friction facings are carried on a friction facing carrier rotatably mounted on a hub. Relative rotational movement between the hub and the carrier is resisted by springs and a friction d... | 10/19/1982 |
| 4352420 | Friction clutch driven plate A motor vehicle clutch driven plate having a flanged hub comprising a pressed annular metal plate having a central cylindrical neck and a central insert. The insert has inner splines for mating with a shaft and outer teeth for engagement in the neck. The ... | 10/05/1982 |
| 4351570 | Vehicle brake pressure proportioning valves A vehicle brake pressure proportioning valve has a stepped proportioning plunger movable by brake pressure against a loading spring. A control plunger subject to pressure from an inlet port co-operates with a metering valve associated with the proportioni... | 09/28/1982 |
| 4346573 | Fluid pressure servomotor A fluid pressure servo motor comprises a body having two operatively independent fluid chambers each chamber having therein a piston means movable in response to a fluid pressure differential so as to alter in use a two condition device from one to the ot... | 08/31/1982 |
| 4345676 | Friction clutch driven plates A friction clutch driven plate has an annular friction facing with a back surface in contact with an opposed surface of a friction facing carrier. Circumferentially spaced recesses are provided in the back face of the facing so as to relieve the back surface o... | 08/24/1982 |
| 4339023 | Twin plate friction clutches A twin plate friction clutch includes a one-way clutch device which allows only relative movement of the intermediate pressure plate towards the flywheel to compensate for wear of the primary driven plate. The clutch device comprises an abutment member su... | 07/13/1982 |
| 4327951 | Clutch release bearing assembly This invention relates to a self-aligning clutch release bearing assembly comprising a rolling element bearing having a rotary race which in use engages with a clutch member, and a non-rotary race mounted on a support for transmission of a clutch release ... | 05/04/1982 |
| 4301907 | Friction clutch driven plate This invention relates to friction clutch driven plates and in particular to motor vehicle clutch driven plates which require both an idling vibration damper and a load vibration damper. The driven plate comprises two concentric hubs, on one of which is m... | 11/24/1981 |
| 4299426 | Pressure modulating valves for braking systems A dual pressure modulating valve unit for a motor vehicle braking system has two identical valves arranged side-by-side in a common housing, each valve being for inclusion in separate sub-systems of a split braking system. The valves are of the pressure l... | 11/10/1981 |
| 4299314 | Clutch brake mechanisms A master cylinder and brake valve assembly for operating the clutch and clutch brake of a heavy road vehicle is arranged such that up to a first given displacement of the master cylinder piston the clutch release mechanism only is connected to the master ... | 11/10/1981 |
| 4270640 | Friction clutch driven plates A clutch driven plate for releasable clamped engagement between opposed driving surfaces, usually an engine flywheel and a clutch cover pressure plate, is particularly suitable for a motor vehicle and includes the usual hub, friction facing carrier and an... | 06/02/1981 |
| 4270807 | Vehicle fluid pressure braking systems and lever mechanisms for use therein The invention relates principally to vehicle fluid pressure braking systems in which valve devices controlled by the vehicle suspension system operate only during vehicle concerning to reduce pressure to the brake which is on a wheel which is on the insid... | 06/02/1981 |
| 4268044 | Fluid connections to rotary members A connection for the supply of fluid under pressure to a rotary member. The connection comprising a rotary member having a rotary surface; a non-rotatory annular member having a stationary surface engaged with said rotary surface at an interface therebetw... | 05/19/1981 |
| 4267697 | Hydraulic master cylinder A hydraulic reservoir and master cylinder assembly having a piston with a blind bore for receiving an input rod, the piston having a breather valve therein provided with opening means operated by an abutment projecting laterally into the master cylinder b... | 05/19/1981 |
| 4251116 | Fluid braking systems A pressure regulator for a vehicle braking system through which fluid under pressure is supplied to actuate wheel brakes and which includes means to limit brake pressure to a proportion of applied pressure dependent on a variable ratio lever system whose ... | 02/17/1981 |
| 4243272 | Resilient linkage means for use in vehicle fluid pressure braking systems A vehicle braking system includes a pair of valve devices which compensate for variations in wheel load for each of the rear brakes. The valve devices are controlled by suspension travel through a resilient linkage assembly, but because the suspension is ... | 01/06/1981 |
