Socket locking extension for wrench handle

Details Socket locking extension for wrench handle Socket locking extension for wrench handle

1996-11-12

1998-02-24

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Handle or shank

811772, B25B 2316

Patent

active

057202079

ABSTRACT:
A socket locking extension element includes a latching mechanism for automatically locking a socket to the driven end simultaneously on application of a wrench drive element to the drive end of the extension. The extension main shaft has a continuous void communicating with the drive end and the socket end of the extension. A captive latch lug projecting through a portion of the socket engagement surfaces is constantly forced into mating recesses in the socket by the outward reaction of a longitudinal operating rod in the continuous void and always bent in flexure by the latch lug. When a socket is snap-fitted to the driven end of the extension, this reaction holds but does not lock the socket in place, permitting it to be changed as desired. When wrench driving element is engaged in the drive end of the extension, the rod translates and an inclined surface on the rod locks the socket against the latch lug and the opposite side of the continuous void. The socket is non-removably retained until the wrench driving element is disengaged. The outward reaction of the rod against the latch lug generates all the force required to merely latch or to positively lock the socket to the extension. When the wrench drive element is removed, the longitudinal component of the outward reaction generated by the rod end incline shifts the rod back to the socket latched but not locked position.

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patent: 5214986 (1993-06-01), Roberts
patent: 5289745 (1994-03-01), Beardsley

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