Socket wrench extension

Details Socket wrench extension Socket wrench extension

1987-02-20

1988-09-13

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Handle or shank

811772, 403329, 403361, B25B 2316, B25G 104

Patent

active

047700734

ABSTRACT:
A push-on/quick release locking arrangement is mounted on a socket wrench extension or driver having a cylindrical body with a square drive end. An inclined transverse bore in the drive end intersects opposed flat faces of the drive end and lock balls are mounted in the bore for movement between a "lock" position and a "release" position. In the "lock" position one ball projects from the end of the bore nearest the end of the drive end to engage a cooperating cavity in the drive recess of a socket. In the "release" position the balls lie within the cross section of the drive end. There is an axial groove in the flat face intersected by the end of said bore further from the end of the drive end. A cylindrical grip sleeve is mounted for slideable movement on the cylindrical body of the extension. The end of said sleeve remote from the drive end is turned inwardly and an integral control tab projects from the other end of the sleeve. A spring is captured inside the sleeve between the inturned end and an inside shoulder formed in the sleeve. A coil of the spring is captured in a groove in the cylindrical body so the spring bears against the sleeve to bias the sleeve towards the drive end and the tab projecting from the sleeve fits into the axial groove and overlies the lock ball when the inturned end of the sleeve abuts the spring coil.

REFERENCES:
patent: 2963930 (1960-12-01), Clothier
patent: 3260541 (1966-07-01), Sadler
patent: 4464077 (1984-08-01), Herchenbach
patent: 4537100 (1985-08-01), Palm
patent: 4589308 (1986-05-01), Palm

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