Patent ID: 6122810
Filing Date: 2000-09-26
Classification: B25B,Y10T

Abstract:
Apparatus for removing and installing a valve core that is mounted in the internal thread of a valve stem that has an external diameter, the valve core having a rectangular projection with flat lateral faces, the apparatus comprising:A) a body having a long axis, an internal bore, a free end and an other end;B) an axle member mounted within the internal bore transverse to the long axis and intermediate the ends;C) a pair of elongate rigid opposed tong elements pivotally mounted within the bore on the axle member, each element having a jaw end facing the free end of the body and a control end facing away from the free end, the opposed jaw ends having opposed inner faces constructed for removably grasping the flat lateral faces of the valve core;D) an elongate control member axially mounted on the other end of the body and having an inner end that penetrates the internal bore and cooperates with the control ends of the tong elements to force the control ends apart and the jaw ends together when the control element is advanced, and an outer end provided with rotation control features for threadedly advancing and retracting the control member; andE) bias means for elastically biasing the control ends toward one another.