Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Externally threaded fastener element – e.g. – bolt – screw – etc. – Head driving structure
Patent
1985-08-05
1989-05-23
Kundrat, Andrew V.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Externally threaded fastener element, e.g., bolt, screw, etc.
Head driving structure
411403, 403350, F16B 2300
Patent
active
048325562
ABSTRACT:
A coupling which consists of first and second solid members. In one form a first coupling element has a recess therein and has a first boss disposed in the recess. The first boss and the recess each have a geometric axis. The axes of the recess and the first boss are disposed in generally parallel relationship. The first boss is disposed in eccentric relationship to the recess, the recess having a peripheral surface which is axially tapered. The coupling includes a second coupling element having a second boss having a peripheral surface dimensioned and configured for engagement with the recess. The second boss is an annulus and has a hole therein for receiving the first boss. The hole and the second boss each have a geometric axis, the axes of the hole and the second boss being generally aligned. The second boss has an exterior surface which is axially tapered and dimensioned for engagement with the recess. In one form of the invention one of the members is a furniture body and the other is a furniture leg. In another form of the invention one of the members is a screwdriver and the other is a screw.
REFERENCES:
patent: Re22681 (1945-10-01), Bugg
patent: 2338023 (1943-12-01), Bugg
patent: 3966340 (1976-06-01), Morris
patent: 4128038 (1978-12-01), Urwin
Kundrat Andrew V.
Smith Robert S.
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