Fluid pressure device and shuttle valve assembly therefor

A rotary fluid pressure device is disclosed of the type including a valve housing (19) defining a pair of fluid ports (41,43) and a shuttle port (85). The device includes a fluid pressure actuated displacement mechanism (15), and a rotatable valve member (53) which provides fluid communication from...

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Bibliographische Detailangaben
Hauptverfasser:	THORSON, CLAYTON W
Format:	Patent
Sprache:	eng
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS CONTROLLING DEVICES FOR VENTING OR AERATING ENGINE PLANTS IN GENERAL ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MACHINES OR ENGINES FOR LIQUIDS MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR PHYSICS POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS PRODUCING MECHANICAL POWER REGULATING ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES STEAM ENGINES SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
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Beschreibung
Zusammenfassung:	A rotary fluid pressure device is disclosed of the type including a valve housing (19) defining a pair of fluid ports (41,43) and a shuttle port (85). The device includes a fluid pressure actuated displacement mechanism (15), and a rotatable valve member (53) which provides fluid communication from one of the ports to expanding volume chambers (27) of the displacement mechanism, and from the contracting volume chambers to the other fluid port. The device includes a shuttle valve assembly including a shuttle piston (97) having end portions (103,105) disposed within a pair of fluid chambers (77,79). A dampening sleeve (115,121) is disposed about each end portion of the piston and cooperates therewith to define a dampening orifice (127,129) to prevent hunting during low pressure operation. The sleeves are radially movable within the fluid chambers to receive the end portion of the piston therein without concentricity problems, but each sleeve includes a flange portion (117,123) to limit radial movement and guide the shuttle assembly during axial movement.