Abstract: A transmission shift control assembly has a rotary arm member to which a transmission shift control cable is attached. The rotary motion at the arm member translates to linear motion at the cable. A manual lever is pivotally mounted on the arm member for rotation therewith to permit operator selection of the desired transmission operating condition. The manual lever cooperates with a detent control member to position the shift control at the selected transmission operating condition. There is also disposed on the detent control mechanism an ignition interlock latching mechanism which is operable to prevent removal of the shift control mechanism from the "Park" position prior to unlocking of the ignition lock and to prevent locking of the ignition lock prior to the transmission control mechanism being placed in the "Park" position.

Abstract: A fluid-operated friction engaged torque transmitting device, such as a clutch or brake, has a piston member. The piston has a rigid material, such as metal or plastic body member which is encased in an elastomeric cover. The elastomeric cover is a molded structure which is bonded to the rigid body. The elastomeric cover has integrally formed therewith, during molding, a pair of annular lip seals, a valve structure and a spring portion. A reaction plate or ring is molded or bonded to the spring portion.

Abstract: A gearshift linkage for transmitting movement of a gear lever mounted in the cab of a tilt-cab vehicle to a ratio-change transmission carried by a chassis portion of the vehicle. A U-secion yoke is pivotally connected to a lower extension of the gear lever. The U-section yoke is provided with an L-shaped locating projection, and is fixed to an inner tube member. An outer tube member providing a connection to the ratio-change transmission telescopically surrounds the inner tube member and is fixed at one end to a channel-section housing member provided with a spring-loaded latching pawl. In a normal operating position the U-section yoke and the channel-section housing member are locked together with the pawl engaging the yoke and the locating projection fitting snugly between side walls of the channel-section member. A detent plate on the lower lever extension unlatches the pawl when the cab tilts, to allow telescopic extension of the tube members.

Abstract: A four-speed planetary transmission providing two underdrive ratios, a direct drive ratio, an overdrive ratio and a reverse ratio is disclosed. Three selectively operable friction clutches and two friction brakes are provided to connect the transmission input to the planetary gearing arrangement and to establish the above speed ratios. One of the clutches has serially disposed therewith a one-way clutch which is operable on a 3-4 upshift or, a 4-3 downshift or, a 4-2 downshift to provide a controlled drive path so that simultaneous overlapping of other friction drive establishing devices in the transmission is avoided during these ratio changes.

Abstract: A drive mechanism for windshield wipers in which a rotary input is converted to an oscillating output through a linkage mechanism. The linkage has a drive link which is connected through a control link and cam member to an output link. The cam member maintains one relative position between the control link and the output link during normal wiping and enforces relative angular movement therebetween to another relative position whereby parking of the wipers is accommodated.

Abstract: A windshield wiper mechanism in which a depressed park control linkage is disposed between the transmission drive link and the wiper drive shaft. The park control linkage is controlled by a solenoid and pin which maintains one angular relation between the linkage members during wiper operation and permits movement of the linkage, by the force on the transmission drive link, to another angular relation for parking the wipers out of the operator's vision. The park linkage is a unit separate from the power mechanism, i.e., electric motor and gear reduction, and the transmission links, so that different park angles can be accommodated for different vehicles by merely changing the park linkage while the remaining structure of the mechanism is unchanged.

Abstract: A vehicle steering system wherein a manual steering gear output controls actuation of a linear hydraulic motor. A control valve, which distributes fluid to and from the boost cylinder, is disposed between the pitman shaft and pitman arm of the manual steering gear. Rotation of the pitman shaft, in response to operator input, causes rotation of the control valve which directs fluid pressure to the hydraulic motor to provide steering assist. The fluid pressure is also directed, through the control valve, to selectively operate on hydraulic reaction members so that a force proportional to steering effort is transmitted back to the operator. A mechanical "overcenter feel" is also provided and has incorporated therewith a mechanical override to provide full manual steering when there is not sufficient fluid pressure to provide hydraulic assist for steering.

Abstract: A compound column for absorbing the energy of impact at a controlled rate. The compound column is comprised of an outer column, which collapses at a predetermined rate during the initial phase of energy absorption, and an inner column, which prevents buckling of the outer column during this phase. During the second phase of collapse both columns absorb energy, at a higher predetermined rate, by collapsing simultaneously.

Abstract: A hydrodynamic drive and slipping clutch arranged in parallel drive relation to provide a controlled slip input drive to a mechanical gear arrangement. The slip speed of the clutch, and therefore the hydrodynamic drive, is controlled by clutch engagement responsive to differential pressure on the clutch. The differential pressure is maintained by controlling fluid flow through a restriction which has a variable opening responsive to a control element which is movable in response to pressure generated by the speed difference between the hydrodynamic drive input and output to establish clutch engagement of sufficient force to maintain a predetermined slip speed in the hydrodynamic drive.

Abstract: A torque converter and clutch assembly wherein the clutch is selectively maintained in slipping engagement with the torque converter input to provide a split torque drive in the assembly resulting in increased overall efficiency of the assembly. The engagement force of the clutch is proportional to the rearward axial thrust force on the turbine which thrust force is normally greatest when the converter is stalled and is imposed on a spring member which deflects proportionally to the thrust to control fluid flow to the disengagement side of the clutch through a variable restriction. The spring cooperates with a passage formed in the turbine hub, to form the variable restriction through which fluid must pass to enter the disengagement chamber of the clutch. The disengagement chamber has a fixed restriction exhaust passage so that the disengagement pressure is determined by the size of the variable restriction.

Abstract: A headlamp washing system wherein the liquid pressure source which supplies liquid to wet the headlamp surface also supplies liquid to actuate a linear motor which drives the wipers to remove the liquid and foreign matter from the headlamp surface. A flow restriction is disposed between the liquid pressure source and the dispensing nozzles adjacent the headlamp so that sufficient pressure and flow capacity are maintained by the liquid pressure source upstream of the restriction to operate the linear fluid motor which moves the wiper on the headlamp surface.

Abstract: A torque converter and slipping clutch assembly wherein the clutch engagement force is determined by the torque transmitted by the turbine of the torque converter. The clutch engagement force is controlled by differential pressure on opposite sides of the clutch plate. The pressure on one side of the clutch plate is determined by fluid flow through a variable restriction and a fixed restriction arranged in series. The size of the variable restriction opening changes in response to the torque transmitted by the turbine.