Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Headed fastener element with nut – washer – securing means or cap – Cap over the head
Patent
1998-08-14
1999-11-23
Wilson, Neill
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Headed fastener element with nut, washer, securing means or cap
Cap over the head
411373, 411431, 411910, F16B 1900, F16B 3300
Patent
active
059889667
ABSTRACT:
An antitheft device includes a base member having an open top and a hole defined through the bottom thereof, a plurality of slots defined in the peripheral wall extending from the bottom and an annular flange extending radially and outwardly from the peripheral wall. A cap has an annular groove is defined in the inner periphery of the peripheral wall extending from the top so that the head portion of a bolt or a nut is received between the cap and the base member with the annular flange being engaged with the annular groove.
REFERENCES:
patent: 3881391 (1975-05-01), Dereszynski
patent: 4136598 (1979-01-01), Hughes
patent: 4601624 (1986-07-01), Hill
Chen Antony
Chen Han-wey
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