Screw drive construction

Details Screw drive construction Screw drive construction

1994-01-14

1995-07-25

Wilson, Neill R.

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

Externally threaded fastener element, e.g., bolt, screw, etc.

Head driving structure

411403, 411919, 81436, 81460, F16B 2300, F16B 3506

Patent

active

054356806

ABSTRACT:
For its drive a screw is given a recess, which has an outer contour diverging from the circular shape. In the radial inner area and/or radial outer area of the recess the side walls are formed by individual surfaces located on a conical surface.

REFERENCES:
patent: 3584667 (1971-06-01), Reiland
patent: 3656397 (1972-04-01), Kudelko
patent: 5019080 (1991-05-01), Hemer
patent: 5207132 (1993-05-01), Goss et al.
patent: 5219253 (1993-06-01), Shinjo

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