Controller for fluid pressure operated devices

Details Controller for fluid pressure operated devices Controller for fluid pressure operated devices

B - Operations, Transporting

62

D

180/55

B62D 5/08 (2006.01) B62D 5/097 (2006.01)

Patent

CA 1059440

APPLICATION OF: Oliver Wendell Johnson FOR: CONTROLLER FOR FLUID PRESSURE OPERATED DEVICES A B S T R A C T A controller for fluid pressure operated devices such as power steering systems. The controller is of the type having a primary, rotatable valve member and a follow-up valve member and including a fluid meter having a metering member coupled to the follow-up valve member. The valving defines a central refer- ence plane perpendicular to the axis of rotation of the valving, the primary valve member defining a pair of meter grooves oppo- sitely and equally disposed about the plane. The follow-up valve defines pressure porting adjacent the plane and connected to the fluid inlet port. The primary valve member defines a pressure passage communicating with one of the meter grooves and extending a sufficient distance to communicate with the pressure porting for relative displacement of the valve members in one direction and another pressure passage communicating with the other meter groove and extending a sufficient distance to communicate with the pressure porting when the valve members are relatively displaced in the opposite direction.

291299

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