Torque transmission member

Claim 1

A speed control valve for use in a supply line delivering a fluid medium to a fluid driven motor which provides the input power in a torque transmission system, comprising a valve housing, said valve housing containing an axially extending flow passageway therein with a single inlet communicating directly into the flow passageway and a single outlet located at one end of and connected directly to said flow passageway, said outlet being spaced in the axial direction of the flow passageway from said inlet, said flow passageway arranged to afford a direct flow of the fluid medium between said inlet and outlet, an axially extending valve member movably positioned within the passageway in said housing and extending therein between said inlet and outlet, means for biasing said valve member in the axial direction through the flow passageway toward said outlet into a position for closing the flow passageway between the inlet and outlet, said biasing means comprising a spring member positioned within the flow passageway anD acting against said valve member for urging it into a closed position across said inlet, adjustable means associated with said housing and extending into the passageway at the outlet end thereof for positioning said valve member in said passageway in opposition to said spring member, said means for positioning said valve member comprising an adjustable setscrew extending through said housing at the outlet end of said passageway into contact with said valve member for variably positioning said valve member within the passageway so that the passageway between said inlet and outlet is maintained partly open, said valve member having a surface adjacent the outlet end of said flow passageway on which the fluid medium acts for displacing said valve member against the biasing action of said spring member for increasing the opening of the passageway between the inlet and outlet as the pressure of the fluid medium increases.