Accumulator for fluid power systems

Claim 1

MECHANISM FOR REGULATING FLUID POWER SYSTEMS TO COMPENSATE FOR PRESSURE VARIATIONS IN THE SYSTEM FLUID CAUSED BY THERMAL EXPANSION OF THE FLUID, SAID MECHANISM COMPRISING A BODY HAVING A TUBULAR CASING PROJECTING FROM THE BODY, A COMPENSATING ROD IN SAID CASING, SAID ROD BEING FASTENED TO A PORTION OF THE CASING REMOTE FROM THE BODY AND SAID ROD BEING OF A MATERIAL WHICH HAS A COEFFICIENT OF LINEAR EXPANSION DIFFERENT FROM THAT OF THE MATERIAL OF SAID TUBULAR CASING, A CHAMBER IN THE BODY OPEN TO SAID CASING, MEANS FOR COMMUNICATING OPERATING FLUID OF A FLUID POWER SYSTEM INTO SAID CHAMBER AND INTO SAID CASING SO THAT SAID FLUID CONTACTS SAID ROD A MOVABLE MEMBER MOUNTED IN SAID BODY FOR MOVEMENT INTO AND OUT OF SAID CHAMBER TO VARY THE VOLUME OF FLUID WITHIN SAID CHAMBER, AND A LEVER IN SAID CHAMBER PIVOTALLY CONNECTED TO SAID MOVABLE VOLUME-VARYING MEMBER AND ALSO PIVOTALLY CONNECTED TO SAID BODY AND ENGAGEABLE WITH SAID ROD, SAID LEVER BEING MOVABLE PIVOTALLY IN RESPONSE TO A RELATIVE LENGTHWISE DISPLACEMENT OF SAID ROD IN SAID CASING COMMENSURATELY WITH A TEMPERATURE CHANGE OF SAID FLUID COMMUNICATED TO SAID ROD TO EFFECT A CORRESPONDING DISPLACEMENT OF SAID MOVABLE MEMBER AND THEREBY MINIMIZE PRESSURE VARIATIONS OF SAID FLUID RESULTING FROM THERMAL EXPANSION OF SAID FLUID.