Abstract: A system for pressurizing a friction element of an automatic transmission supplied concurrently from two hydraulic passages through a shuttle valve where the two sources of supply pressure are combined. A control valve proeduces regulated output pressure by balancing control feedback pressure against a spring force without venting any portion of the system. The shuttle valve includes a shuttle ball for sealing ports connected to both supply sources and maintains an open connection between the direct clutch and a pocket in which the shuttle ball is retained. AN accumulator includes a plunger separating first and second volumes. One volume expands as hydraulic fluid at regulated output pressure exits the control valve. The volume expands at a regulated time rate controlled by the magnitude of TVLM control pressure, a compression spring force and the flow rate through an orifice of predetermined size.

Abstract: A transmission control selector arm transmits movement of a gear shift lever to the manual valve of an automatic transmission through a shift mechanism that includes a tube, rotatably mounted and supported against displacement and having one end pivotably supporting the gear shift lever and a second end pivotably supporting the transmission control selector lever. A plunger is supported within the tube for axial displacement and defines, near one axial end, a hole, into which the gear shift lever is retained for rotation about the pivoted support on the tube. The selector lever is supported for movement about a second pivotal joint on the tube. A control selector position insert mounted on the tube defines multiple detent surfaces corresponding to the various positions among which the gear selector lever can be moved. These detent surfaces are located adjacent the selector lever.

Abstract: A pulsation damper for a swashplate air conditioning compressor comprising a tube adapted to be inserted in the discharge port of the compressor to provide internal damping whereby the pressure pulsations are forced to travel in a reentrant flow path as the pulsations from one side of the compressor cancel or neutralize the pulsations from the other side.

Abstract: A power steering gear mechanism for vehicles with a variable assist characteristic having primary and secondary steering valve portions, the primary portion controlling pressure in a power steering fluid motor, a steering control valve that controls the magnitude of the steering assist as a function of vehicle speed the secondary steering valve portion developing a steering torque signal, and an electronic signal processor for controlling the steering control valve in response to changes in the vehicle speed and the steering torque signal.

Abstract: A multiple forward speed automatic transmission produces its lowest forward speed ratio when a hydraulic clutch and hydraulic brake are disengaged and a one-way clutch connects a ring gear to the transmission casing. Second forward speed ratio results when the hydraulic clutch is engaged to connect the ring gear to the planetary carrier of a second gear set. Reverse drive and regenerative operation result when an hydraulic brake fixes the planetary and the direction of power flow is reversed. Various sensors produce signals representing the position of the gear selector lever operated manually by the vehicle operator, the speed of the power source, the state of the ignition key, and the rate of release of an accelerator pedal. A control algorithm produces input data representing a commanded upshift, a commanded downshift and a torque command and various constant torque signals. A microprocessor processes the input and produces a response to them in accordance with the execution of a control algorithm.

Abstract: A continually variable cone-pulley, belt-drive transmission includes a primary shaft having a cone-pulley arrangement actuated by a pressure servo, a secondary shaft driven by an endless belt having a cone-pulley, actuated by a second pressure servo. Spring assemblies located in the pressure servo preload compression springs. Each spring assembly includes a compression spring located in spring-receiving rings, a cup-shaped support ring, and a guide ring comprising a peg-shaped spring guide. Preload on the compression springs is released during the first complete movement of the cone-pulley assembly by loading a locking and unlocking pin.

Abstract: A throttle valve system for an automatic transmission control circuit comprising a solenoid pilot valve and a pressure regulating throttle pressure spool valve for developing a throttle valve pressure for use in initiating control functions in a multiple ratio transmission wherein the output signal of the throttle valve can be used as an indicator of the driving torque wherein the force requirements of the variable force solenoid are reduced and wherein the sensitivity of the pressure regulating throttle valve to the output signal of the pilot valve and to changes in engine torque is improved relative to prior art throttle valve systems, the pilot valve being effective to control a larger flow insensitive regulating valve and the stroke of the solenoid actuator for the pilot valve being minimal.

Abstract: A control valve arrangement for a continually variable transmission includes a first valve for regulating pressure in a primary servo for the gear ratio of the transmission and a second valve for regulating pressure in a secondary servo controlling tension of the drivebelt. These valves are acted upon by a throttle shaft as a function of output torque of the engine. A modulating device varies pressure in the secondary servo as a function of the gear ratio and of engine torque. The modulating device comprises a lever having one end acted upon by a cam disk as a function of the engine torque and second end acted upon by a valve element of the second regulating valve. The second lever is extended radially outward from a pivot. A sensor arm acts as a function of the gear ratio on one end of the second lever, whose other end is rotatably pinned to the first lever.

Abstract: A belt-driven pulley assembly for an accessory drive includes a steel pulley and a drivebelt sheave made of fiber reinforced phenolic material. The inner surface of the sheave is bonded to the outer surface of the pulley after applying plastic adhesive in a precured condition and inserting the pulley within the sheave. The position of the components are maintained during an elevated temperature polymerization cycle. The thickness of the adhesive is defined by the radial depth of rails extending inward toward the mounting surface of the pulley and by the depth of a stop bead formed on an inclined surface of the sheave that faces the inclined surface of the pulley.

Abstract: The end of a robot arm includes two links, a first or inner link supported rotatably about a central axis and an end link at which a tool is carried. Located between the links are a rod and a tube whose longitudinal axes are concentric. Each of four gimbal rings is used as a member of a universal joint that connects the links, the rod and the tube. The links are connected by two universal joints in series, and the rod connects these joints. The links are also connected by two other universal joints in series and the tube connects this second pair of joints. The first and second pairs of universal joints connected in series are connected to one another in parallel. Gimbal rings rotatably supported on the tube and on the links for angular movement about yaw axis provide rotational support for the links and the connecting rod about the pitch axis. Actuating rods connected to the inner set of gimbal rings produce articulation of the wrist about these axis when the rods are actuated.

Abstract: The drive belt for a continually variable, cone-pulley drive belt transmission includes links connected to form a continuous circulating belt able to articulate in one or both directions about the longitudinal axis of the belt. Each link includes at least one trapezoidal planar surface, a roller-shaped rib located at the central plane of the link, at least one planar surface inclined with respect to the trapezoidal surface, and a roller-shaped channel having a cross section complimentary to the cross section of the rib. The links are maintained engaged by fitting projection located at the forward edge of the link in a complimentary recess located on the rear face of each link.

Abstract: A manually operated automotive transmission has a cluster gear on which several forward drive input gears and the reverse drive input gear are formed integrally. An auxiliary coutershaft carries a fifth speed gear continuously engaged with a gear formed on the input shaft. A reverse idler slides on a stub shaft into engagement with a reverse pinion on the input shaft and a reverse output gear. The fifth gear synchronizer sleeve is moved away from the fifth gear when reverse gear is selected because the fifth gear selector position is in the same plane as the reverse drive position. A gearset brake is actuated by movement of the synchronizer sleeve to prevent rotation of the fifth speed gear relative to the input shaft during the initial movement of the selector shaft toward the reverse drive position. The brake mechanism is released as the selector shaft is moved fully to the reverse drive position.

Abstract: A multiple speed transmission for an automotive vehicle includes three simple planetary gear units and clutches and brakes applied and released selectively to produce four forward speed ratios and reverse drive. Two of the gears units produce three of the four drive torque delivery paths and the reverse drive torque delivery path. A third gear unit, located between a torque converter and the first and second gear units, produces an overdrive speed ratio. A coast clutch is engaged to produce an engine braking effect in each of three manually selected speeds; an overdrive brake produces engine braking in the fourth speed automatic range.

Abstract: A cold extrusion process for forming internal ring gears comprising the formation of an annular ring gear blank having precise inside and outside diameters, placing the workpiece over a circular mandrel having external gear forming die teeth and a pilot portion adapted to receive the blank, placing a die ring around the mandrel and the assembled workpiece, a circular punch arranged coaxially with respect to the mandrel and the workpiece, moving the punch into the annular space occupied by the workpiece between the die ring and the mandrel, advancing the punch by means of a press whereby the workpiece is cold formed through the external teeth of the mandrel, moving the die ring in synchronism with the downward motion of the workpiece through the die teeth thereby eliminating any frictional forces in the direction of motion of the die during the extrusion process, and retracting the die ring following the extrusion of the workpiece thereby permitting automated ejection of the workpiece.

Abstract: A torque converter lockup clutch is pressurized from a source of regulated line pressure through a lockup clutch control valve, which directs pressure to either of two passages to apply and release the clutch. The control valve is supplied with control pressure from a solenoid-operated valve that produces high and low fluid pressure states corresponding to commands to engage and release the lockup clutch. A second control pressure, opposing the effect of the solenoid-operated control pressure, is applied to the control valve when the vehicle operator manually selects certain gear ratios, principally the lowest forward and reverse gear ratios. A line pressure regulator valve produces line pressure whose magnitude is proportional to the magnitude of a control pressure representing a commanded engine torque output.

Abstract: An infinitely variable transmission having a driving sheave assembly connected to the crankshaft of an internal combustion engine and coaxially mounted with respect to the crankshaft, an intermediate shaft upon which is mounted a driven pulley assembly, a drive chain or belt drivably connected the pulley assemblies, high range and low range gearing coaxially disposed with respect to the driven pulley assembly, a countershaft arranged in parallel and spaced disposition with respect to the secondary shaft wherein the countershaft is adapted to support forward and reverse gearing and improved bearing means for supporting the countershaft and wherein a differential output assembly connects torque output elements of the countershaft to each of two axle half shafts thus providing improved torque transmitting capacity with reduced overall dimensions due to reduced shaft spacing.

Abstract: A power steering gear for a vehicle capable of providing a variable degree of power assistance to supplement manual steering effort wherein the variable assist is achieved by controlling directly the magnitude of the steering pressure made available to a pressure operated motor by a vehicle engine driven pump, the magnitude of the pressure being controlled by a central processing unit that responds to vehicle steering wheel torque and vehicle speed to produce an appropriate steering pressure and power assist for all driving conditions.

Abstract: In a cable length adjuster, a slider is guided for movement within a housing and is biased by a spring to take up unnecessary slack in the cable. A latch is moveable, normal to the direction of slider movement, and becomes engaged with teeth on the slider. A stud carried on the housing fixes the position of the housing against movement in the direction the slider moves. A leaf spring forces the latch toward locking engagement with the slider.

Abstract: A long travel damper having variable friction lag comprising a torque input cover plate and a torque output driven plate, a plurality of springs arranged on a circular spring guide for cushioning torque delivery between the cover plate and the driven plate, the springs having a large L/D ratio, and a friction lag clutch adapted to be actuated by cam plates connected respectively to the cover plate and the driven plate whereby the clutch is applied with a variable force that depends upon relative angular displacement of the cam plates.

Abstract: A multiple ratio transmission having planetary gearing with clutches and brakes for establishing selectively each gear ratio, a hydrokinetic torque converter connecting a torque input shaft to a torque input shaft for the gearing and a hydrokinetic torque converter bypass friction clutch for connecting the torque input shaft directly to one of the torque input elements of the planetary gearing whereby the transmission may be conditioned for (i) open converter power drive mode, (ii) a normal drive mode wherein the converter is operated with an open bypass clutch during low speed ratios and wherein a split torque delivery is achieved in a higher speed ratio and wherein the torque converter is bypassed through the clutch during operation in the highest speed ratio, and (iii) an economy light throttle drive mode wherein the transmission is conditioned for open converter operation in the low speed range and for operation with the bypass clutch fully engaged for each of the higher speed ratios.