Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Externally threaded fastener element – e.g. – bolt – screw – etc.
Patent
1981-02-23
1983-10-11
Wolfe, Robert L.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Externally threaded fastener element, e.g., bolt, screw, etc.
F16B 3500
Patent
active
044089414
ABSTRACT:
Eyebolts having increased ability to transmit forces acting obliquely to the axis of the screw portion thereof and having a slotted or apertured specially configured upper part and a threaded shank abutting the upper part and having a constriction therein, the shank being optionally provided with more than one threaded portion which can be oppositely threaded with the constricted portion therebetween.
REFERENCES:
patent: 2830635 (1958-04-01), Thorstens
patent: 2992799 (1961-07-01), Tisdell
Firma Friedrich Schroeder
Wolfe Robert L.
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