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| Number | Title | Issue Date |
| 4800772 | Locking plate for gear change rods A plurality of control rods (41, 43, and 42, 44) extend transversely of a locking plate (3) through which at least three of the control rods are locked in a neutral position by cammed displacement of the locking plate in response to axial displacement of ... | 01/31/1989 |
| 4784041 | Servosteering pressure control device A steering control piston valve has reaction chambers and respective fixed restrictor orifices having an interconnector conduit. The reaction chambers have respective inlet and outlet flow control valving which serve to permit flow from either reaction ch... | 11/15/1988 |
| 4777837 | Power shiftable transmission for vehicle A transmission is provided for transfering power from an input shaft to an output shaft in a large number of ratios derived by the use of main gear groups, a range gear group and a reversing gear. Power is provided by either of two power paths thus making... | 10/18/1988 |
| 4774847 | Mechanism for centering relatively rotative components, particularly in rotary valves Rotary pressure control valves in booster steering systems are rotated by manual force at the steering wheel against a return force, usually a steel torque rod which is twisted by rotation of the steering wheel. Upon release of steering force, the untwist... | 10/04/1988 |
| 4772190 | Vane cell pump having resilient sealing means biasing the pressure plate A vane cell pump comprises a housing having a small bore at one end extending to a large bore at the other end. A drive shaft for a pump package, i.e., a rotor, vanes and cam ring in said large bore. The other end of the housing is closed by a pressure pl... | 09/20/1988 |
| 4763091 | Air gap setting device for electromagnets A device for setting the air gap between an armature and an energizable electromagnet, which utilizes a pin that can be force fitted in the armature by a tool forcing it against spring bias for a distance limited to the thickness of a collar on the pin. I... | 08/09/1988 |
| 4756330 | Flow divider valve In a flow divider valve for pressure feed to a hydraulic circuit for auxiliary power steering and to a hydraulic circuit for a power take-off the interior of a hollow regulator piston receives pressure feed for distribution to the hydraulic circuits. For ... | 07/12/1988 |
| 4752195 | Rotary vane type of pump with elongated damping chambers A vane type pump has an elongated pump housing through which the drive shaft of the pump passes. The usual components of the pump comprising a rotor which carries vanes within a cam ring is disposed between an inner end wall of the housing and a pressure ... | 06/21/1988 |
| 4742733 | Control system for automatic change speed transmission Automatic shift of a gear transmission under speed and load control between high and low drive ratio limits of a shift range, is effected in accordance with different sequential step change shift patterns selected from program storage. Different ones of t... | 05/10/1988 |
| 4715793 | Flow regulating rotary vane pump A rotary vane pump has a pressure operated valve to bypass pump outlet flow to the inlet of the pump for flow regulation. A metering throttle bore, downstream of a choke bore, responsive to viscosity is a passage from the pump to a consumer such as a serv... | 12/29/1987 |
| 4709666 | Regulatable fan drive A regulatable drive for speed control of the cooling fan of an internal combustion engine comprises fluid feed from a tank to the suction side of a pump via a suction passage wherein flow is controlled by a regulatable multi-position valve. The pump provi... | 12/01/1987 |
| 4704939 | Tone hole pad for wind instruments, particularly flutes A tone hole pad comprises a rigid backing disc but having a bendable margin and has at one face a recess between inner and outer coaxial collars to accommodate a cushion ring. Stretched across the radial faces of the collars and backed by the cushion ring... | 11/10/1987 |
| 4705129 | Hydrostatic steering arrangement, especially for motor vehicles Pressurized fluid from an engine driven pump is supplied to and exhausted from the opposed chambers of a hydrostatic power steering servomotor through control passages in a valve housing and in a rotatable valve body coupled through viscous liquid to a st... | 11/10/1987 |
| 4701111 | Regulation of vane pumps A regulatable vane pump is provided with a piston operable by differential pressure responsive to booster steering flow demand wherein the piston movement controls a choke bore flow area. The differential pressure is effected by pump pressure on one face ... | 10/20/1987 |
| 4699231 | Rack and pinion auxiliary power steering A compact power steering device is provided wherein the power steering valving is actuated by axial movement of a pinion having helical teeth engaging a rack in a steering housing. The valving utilizes head and seat valves with valve heads and coacting va... | 10/13/1987 |
| 4685548 | Control system for speed synchronized clutch operation during gear shift of engine driven transmission Control system for a pressure medium operated clutch (1) and reduction gear unit (4) to qualitatively improve torque reversal gear shifts by measurement of rotational speeds of the gear unit input shaft (41) and the turbine shaft (320) of a torque convert... | 08/11/1987 |
| 4676333 | Servo steering for vehicles A pump is constructed using a magnetic piston in a cylinder having an oil feed thereto, for pumping oil to either pressure chamber of a steering servomotor. The pump cylinder has a chamber on each side of the pump piston which chambers discharge pressure ... | 06/30/1987 |
| 4632641 | Pump arrangement for hydraulic installations A pump and a centrifugal impeller are arranged so that the pump has a suction line in which the centrifugal impeller is installed effecting a countercurrent opposite to the suction feed flow direction to the pump. The effect is to regulate the pump flow r... | 12/30/1986 |
| 4621703 | Hydraulic auxiliary power steering, especially for motor vehicles Simulated steering resistance is provided for the rotative valving control of a booster steering servomotor by providing the manually rotated section of the valving control which connects to a steering wheel with a coaxial reaction piston having faces exp... | 11/11/1986 |
| 4618017 | Hydraulic auxiliary power steering for motor vehicles A booster steering system has two pressure pumps for the booster cylinder, one of which is driven by the vehicle, with the wheels when the vehicle is rolling, and the other pump is driven by the vehicle engine. The vehicle driven pump is an emergency pump... | 10/21/1986 |
| 4614127 | Steering gear A rack and pinion gearing in a steering housing is provided, with eccentric bushing bearings at each end of the pinion shaft. The bushings are outer races of roller bearings which carry the shaft and which bushings are carried in the housing rotatively su... | 09/30/1986 |
| 4608612 | Condition monitoring system for magnetic tape unit The channel output signal from the center track read head of a magnetic tape unit clocks the side channel outputs of two other read heads through a logic circuit to operate a skew status indicator. The same center channel signal provides tape speed inform... | 08/26/1986 |
| 4599908 | Opto-mechanical touch sensor A pressure deformable body of a transducer is formed with a plurality of passage holes through which paths are established for a signal medium conducted thereto through a rigid base on which the body is mounted. Portions of the body material when loaded b... | 07/15/1986 |
| 4593718 | Pressure agent control arrangement for auxiliary power steering mechanisms A booster steering valve control of the kind that comprises a pair of valve pistons reciprocal in a rotative valve body are driven by a fork shaped member at the end of a steering spindle. The fork shaped member comprises a pair of spaced actuator pins wh... | 06/10/1986 |
| 4590965 | Pressure agent control arrangement for auxiliary power steering mechanisms A booster steering valve control device of the kind having a rotative valve body within a steering housing with a pair of piston valves operative upon rotation of a steering spindle is provided with reaction chambers at corresponding ends of the piston va... | 05/27/1986 |
| 4564338 | High pressure pump with a flow control valve A vane pump having a flow regulating bypass valve activated by outlet pressure to direct excess flow back to the inlet is provided with a channeling having an element comprising a plug insertable in the valve housing, which plug has a specially shaped flo... | 01/14/1986 |
| 4558631 | Control system for two hydraulic power cylinders supplied by a pressure pump via one branch connection each Separate branch conduits extend from a common pump to two fluid power operated systems. One of the branch conduits supplies a relatively low volume of fluid through a pilot flow conduit to a steering control valve in one of the systems to adjust its opera... | 12/17/1985 |
| 4557344 | Servosteering, especially for motor vehicles A servosteering control valve is provided with fluid reaction chambers which are pressued responsive to the speed of a vehicle for effecting a simulated steering resistance wherein at low speed, as in parking, there is no steering resistance and resistanc... | 12/10/1985 |
| 4555975 | Hydraulic steering A hydraulic power steering system having an unbalanced piston servomotor and a pair of identical control valve pistons controlling flow of pressurized fluid to the servomotor for balanced directional displacement of the servomotor piston and to separately... | 12/03/1985 |
| 4553389 | Hydrostatic auxiliary steering apparatus In a hydrostatic auxiliary power steering apparatus, a short-circuit passage of a control valve establishes a restricted flow path from a pump pressure line to a reservoir return line in the neutral position of the control valve wherein all other flow pat... | 11/19/1985 |
| 4553908 | High pressure pump with a flow control valve A rotary slide vane pump for steering booster systems has a flow control valve which bypasses flow from outlet side to suction side with increase in speed as heretofore known. The flow channels or passages that conduct bypass flow change the direction of ... | 11/19/1985 |
| 4553390 | Hydrostatic steering arrangement A hydrostatic steering system having a hand operated metering pump and steering control valve regulating and distributing fluid flow from a servo pump to a piston servomotor of the differential pressure surface type. A compensation valve disposed in the p... | 11/19/1985 |
| 4553447 | Pressure support means in rack and pinion steering Parallel ball bearing arrays are utilized in a pressure support means for a rack to reduce friction of a stationary pressure means supporting a moving rack in engagement with a drive pinion. The rack and a pressure pad have face to face coacting ball race... | 11/19/1985 |
| 4536133 | Regulatable vane pump A regulatable vane pump is provided with regulating apparatus incorporated in the pump having a differential pressure piston operable responsive to booster steering flow demand wherein the piston carries a flexible leaf spring having a flat surface which ... | 08/20/1985 |
| 4516784 | Seal assembly with radially undulated sealing element A seal assembly comprised of a pair of concentric rings radially spaced with a tortuous or convoluted channel therebetween in which is carried a rubber-like compressible seal element that extends beyond the radial surfaces of the rings. The inner ring has... | 05/14/1985 |
| 4495769 | Booster power steering A control valve for booster power steering has a back pressure check valve openable by pressure caused by wheel jolting, which check valve connects between a servopump pressure passage of the control valve through the inner bore of a valve sleeve operable... | 01/29/1985 |
| 4492487 | Overlay code selection system Coded data imprinted in close spaced relation on data sheets retained within a loose leaf binder is selectively marked through cutout openings in a transparent overlay mask. The mask is positioned in proper alignment over each of the data sheets by means ... | 01/08/1985 |
| 4488401 | Hydraulic servo steering for vehicles A flow regulating channel in a servo steering valve controls exhaust flow with varying restriction from a fluid operating motor while controlling operation of a separate steering servo motor on a priority basis. An operational control valve for the fluid ... | 12/18/1984 |
| 4483237 | Steering gear with auxiliary power support A control valve in a power boost steering system uses hydraulic power for wheel straightening after a steering operation wherein a valve spool is reciprocal with a worm shaft which has an end threadedly carrying a non-rotative but slidable collar to compr... | 11/20/1984 |
| 4479400 | Rack and pinion steering gear, especially for motor vehicles An impact damping or cushioning means is provided to overcome the noise occasioned when a reciprocating slide block member, to which steering rods are secured, is limited in motion by engaging the ends of a housing slot in which the member slides. Such sl... | 10/30/1984 |
