Tools – Wrench – screwdriver – or driver therefor – Handle or shank
Patent
1993-09-07
1994-03-08
Meislin, D. S.
Tools
Wrench, screwdriver, or driver therefor
Handle or shank
811772, B25B 1300
Patent
active
052918092
ABSTRACT:
A short shaft has: a rear socket for coupling with a drive; a front drive for receiving a socket; and locking components for locking the rear socket to the drive and the front drive to the received socket. A central bore enters the shaft from the rear. A locking bolt and biasing spring go in the central bore and are retrained by a set screw. The locking bolt front end engages a detent ball disposed in a radial cavity in the drive. A thumb lever, disposed in a bore, has an inner end including a bore for engaging the locking bolt rear section for moving the locking bolt and an outer end accessible to a user's thumb for axial movement for moving the bolt from a locking position wherein the detent ball protrudes out of the drive so as to engage a drive socket and prevent its removal to a releasing position wherein the detent ball resides substantially within the front drive so as not to engage a drive socket. In an alternate embodiment, a universal joint is interposed between the rear socket and the locking/front drive apparatus.
REFERENCES:
patent: 1864466 (1982-06-01), Peterson
patent: 2987334 (1961-06-01), Wendling
patent: 4297924 (1981-11-01), Stephens
patent: 4367663 (1983-01-01), Merics
patent: 4399722 (1983-08-01), Sardo, Jr.
patent: 4480511 (1984-11-01), Nickipuck
patent: 4502365 (1985-03-01), Hacker
patent: 4589308 (1986-05-01), Palm
patent: 4733584 (1988-03-01), Karge
patent: 4781085 (1932-06-01), Fox, III
Fox, III Leonard J.
Heckbert Bruce A.
Meislin D. S.
Tervo Calif
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