Self locking set screw

Details Self locking set screw Self locking set screw

1993-02-03

1993-09-14

Wilson, Neill R.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Having structure to restrict rotation of threaded, mating...

Comprising a thread lock

411 54, 411393, F16B 1306, F16B 3902

Patent

active

052443230

ABSTRACT:
A threaded, locking set screw with standard outer dimensions having a thred body, an expansion plug, and a retaining wedge. The threaded body has a tapered cavity at its bottom end. The expansion plug and retaining wedge are inserted into the cavity in the body. The base of the plug extends from the cavity, and the plug is held in place by a force fit between the wedge and a retaining slot in the body. When the set screw is tightened against a part, the plug is forced into the cavity. Because of a locking taper between the plug and the cavity, the plug exerts an outward force on the inner surface of the cavity causing the set screw body to expand radially, thus, locking the set screw in place.

REFERENCES:
patent: 1438648 (1922-12-01), Jacobs
patent: 2159580 (1939-05-01), Zifferer
patent: 2533748 (1950-12-01), Weissert
patent: 2900863 (1959-08-01), Maynard
patent: 3479072 (1969-11-01), Kosar
patent: 4411570 (1983-08-01), Juric
patent: 4589693 (1986-05-01), Kennedy
patent: 4711760 (1987-12-01), Blaushild
patent: 4976577 (1990-12-01), Brown et al.
patent: 5098239 (1992-03-01), Thiel

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