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| Number | Title | Issue Date |
| 4821518 | Clutch booster with overcenter means A booster device for reducing the pedal force required to release the clutch on automotive vehicles. It is capable of either replacing the conventional clutch master cylinder (FIG. 4) or acting as an additional slave and master cylinder (FIGS. 1 to 3). An... | 04/18/1989 |
| 4785713 | Driving device, in particular for a proportioning pump of the piston-flowmeter type In a driving device of the piston-flowmeter type, in particular for a proportioning pump, a distributor is mounted at one end of a piston cylinder for controlling the admission and discharge of fluid within two chambers formed respectively on each side of... | 11/22/1988 |
| 4781262 | Vehicle steering system In a steering system in which both front and rear wheels are steerable, the rear road wheels are adapted to be turned in the direction opposite to the direction of turning of the front road wheels only when a steering wheel is turned with a torque or effo... | 11/01/1988 |
| 4694127 | Pressure responsive switch assembly A vacuum operable, snap-action assembly utilizing a metal disc and flexible diaphragm structure to move a switch between first and second positions is disclosed. The switch and disc assembly are provided in a protective housing and are responsive to a pre... | 09/15/1987 |
| 4669567 | Vehicle steering system A vehicle steering system in which both front and rear road wheels are turnable in opposite directions upon low speed running and in the same direction upon high speed running, and the angle of turning of the rear road wheels for a given steering effort o... | 06/02/1987 |
| 4638721 | Pressure responsive device A pressure responsive device suitable for high pressure hydraulic applications has a formed metal disc or diaphragm adapted to move from an original dished configuration toward an inverted dished configuration with snap action in response to the applicati... | 01/27/1987 |
| 4583447 | Pneumatic diaphragm actuator with a pneumatic position controller Pneumatic diaphragm actuator having a driving rod for acting upon a push rod of a position controller through a return spring, wherein an inversion device when inserted between the diaphragm actuator and the position controller, inverts the force exerted ... | 04/22/1986 |
| 4056334 | Vacuum system A vacuum pump having a mechanically operated plunger or piston which is so arranged as to either fully open or fully close a supply of compressed gas. The compressed gas flows through a venturi tube to create a vacuum. This vacuum in turn causes the atmos... | 11/01/1977 |
