Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Threaded fastener locked to a discreet structure – Including a series of elements – one element restricting two...
Patent
1978-11-29
1981-02-24
Britts, Ramon S.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Threaded fastener locked to a discreet structure
Including a series of elements, one element restricting two...
403 19, 411263, 411293, 411312, 411321, F16B 3902
Patent
active
042521670
ABSTRACT:
The device comprises in combination a screwthreaded block and a screw which are hollow and have screwthreads of opposite direction. These screwthreads cooperate with screwthreads of respectively corresponding direction formed in the inner wall of the tapped hole. There are provided means for stopping the block, and means for preventing rotation between the block and the screw.
REFERENCES:
patent: 501345 (1893-07-01), Holmes
patent: 965445 (1910-07-01), Davis
patent: 1413024 (1922-04-01), Harrell
patent: 2147899 (1939-02-01), Hoern
patent: 3104493 (1963-09-01), Nalle
patent: 3630261 (1971-12-01), Gley
Britts Ramon S.
Shur-Lok International S.A.
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