Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Internally threaded fastener element – e.g. – nut – etc. – Having cap
Patent
1997-12-05
1998-09-22
Saether, Flemming
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Internally threaded fastener element, e.g., nut, etc.
Having cap
411410, F16B 3714
Patent
active
058105310
ABSTRACT:
A fastening device for fastening skateboard trucks to a skateboard, or other articles and components to one another includes a threaded hexagonal body element having a planar upper surface and a planar lower surface. The threaded hexagonal body element body element includes a threaded receiving aperture for receiving a bolt or screw. An enlarged hemispherical head with a circular surface is mounted on or formed integrally with the threaded hexagonal body element on the planar upper surface. The enlarged hemispherical head has a hexagonal aperture in a central polar region thereof being adapted to receive and secure a hexagonally configured tool therein.
REFERENCES:
patent: 1867229 (1932-07-01), Nelson
patent: 2353531 (1944-07-01), Whitney
patent: 3448466 (1969-06-01), Haldopoulos
patent: 4480513 (1984-11-01), McCauley
Hall Jeffrey A.
Saether Flemming
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