Wrench socket with cam locking feature

Details Wrench socket with cam locking feature Wrench socket with cam locking feature

1986-03-19

1988-02-16

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Stud-removal and implacement

81 902, 279 55, B25B 1350

Patent

active

047247304

ABSTRACT:
A cam lock socket has a plurality of pins having substantially oval-shaped cross-sections. The pins are received in complementary axially-extending circumferentially-spaced scalloped recesses formed in the socket body. When the socket is rotated in one direction or another, the pins are cammed out of their respective recesses to tighten on a nut (or the head of a bolt or stud). Means are provided for retaining the pins axially and radially in the socket body, and to preclude the pins from tilting about their respective longitudinal axes.
In one embodiment, outwardly-extending fins on the pins are received in an internal annular groove formed in the socket body, and a resilient retaining ring is received in slots formed on the inside of pins. In another embodiment, a flanged bushing is mounted in the bore of the socket body and cooperates with inwardly-extending fins on the pins. The flange on the bushing carries a resilient O-ring which bears against the respective pins.

REFERENCES:
patent: 289506 (1883-12-01), Davidson
patent: 1140567 (1915-05-01), Boring
patent: 2403613 (1947-11-01), Hodge
patent: 3413876 (1968-12-01), Shinn
patent: 4611513 (1986-09-01), Young

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