Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Headed fastener element with nut – washer – securing means or cap – Securing means pivotable about axis transverse to fastener...
Patent
1990-07-27
1991-11-26
Lindsey, Rodney M.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Headed fastener element with nut, washer, securing means or cap
Securing means pivotable about axis transverse to fastener...
411340, F16B 2100
Patent
active
050678647
ABSTRACT:
An improved fastener mountable within a plasterboard wall from one side of the wall and used with a screw comprises a fastener body and a toggle clamp pivotable between an insertion position and a toggle position. The fastener has a drilling tip adapted to drill a hole of sufficient diameter so as to accommodate the fastener, except for the fastener head which is adapted to coact with a driving tool. In a first embodiment, the drilling tip is an integral part of the fastener body and extends axially beyond the toggle clamp in its insertion position. In a second embodiment, the drilling tip is an integral part of the toggle clamp and extends axially beyond the fastener body in the insertion position of the toggle clamp. In each embodiment, the fastener is self-drilling.
REFERENCES:
patent: 3385156 (1968-05-01), Polos
patent: 3927597 (1975-12-01), Stults et al.
patent: 4285264 (1981-08-01), Einhorn
patent: 4407462 (1977-09-01), Hurtig
patent: 4822226 (1989-04-01), Kennedy
Dewey George G.
Tenuta Ralph D.
Illinois Tool Works Inc.
Lindsey Rodney M.
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