Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Threaded fastener locked to a discreet structure – Fastener – or coaxial adjunct therefor – having sidewardly...
Patent
1998-04-08
1999-10-19
Wilson, Neill
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Threaded fastener locked to a discreet structure
Fastener, or coaxial adjunct therefor, having sidewardly...
411150, 411163, 411953, F16B 3910, F16B 3924
Patent
active
059677228
ABSTRACT:
A locking washer arrangement which includes two (2) washer members fabricated from a hardened steel material, a thicker one on the bottom and a thinner one on the top. The top surface of the top washer member and the bottom surface of the bottom washer member preferably have a relatively high coefficient of friction and may be grooved, embossed or otherwise roughened so they will grip the surfaces they come into contact with while the bottom surface of the top washer member and the top surface of the bottom washer member have a relatively low coefficient of friction to facilitate relative movement therebetween. Relatively long flexible tabs project radially outward from the periphery of the top washer member and distal ends are bent downwardly to engage and interlock between corresponding relatively short stiff tabs projecting radially outward from the periphery of the bottom washer member. A special magnetized socket is used to assemble the locking washer arrangement by temporarily attracting and holding the relatively long flexible tabs in the top washer member upward to permit the top washer member to rotate relative to the bottom washer member. When the special magnetized socket is removed, the relatively long flexible tabs in the top washer member engage and interlock between the relatively short stiff tabs in the bottom washer member to preclude further rotation between the top washer member and the bottom washer member.
REFERENCES:
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patent: 5618143 (1997-04-01), Gronin, II et al.
patent: 5674034 (1997-10-01), Bennett
Dana Corporation
Wilson Neill
LandOfFree
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