Key lock assembly for a pair of relatively movable members

Claim 1

A key lock assembly for securing together a pair of relatively movable longitudinally extended members one of which members is positionable within a longitudinal receiving bore formed in the other of said members, and wherein said one member has a key way therein arranged opposite a corresponding key way in the other member to form a single bore extended parallel to said receiving bore, said assembly comprising: a. an elongated body member having a passage means extended longitudinally therethrough, said body member having a shape in transverse cross section conforming to the transverse cross sectional shape of said single bore for insertion therein, said passage means having inwardly tapered end sections, and b. means for expanding said finger portions into frictionally locked bearing engagement with corresponding side surfaces of said single bore including an elongated connector member positioned within said passage means with the ends thereof spaced inwardly from corresponding ends of the passage means, and c. a tapered end member conforming to and positioned within each tapered end section, each end member threadably engaged with an adjacent end of said connector member for adjustment longitudinally of a corresponding tapered end section in response to a rotation of one of said end members, and d. one of said end members has a head portion projected longitudinally outwardly from said body member of a shape in transverse section corresponding to the transverse cross sectional shape of said single bore for reception therein, e. said body member has a center section of a longitudinal length greater than the longitudinal length of a finger portion, and f. a tapered end section has a longitudinal length less than the longitudinal length of a finger portion.