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
1992-08-18
1993-09-14
Wilson, Neill R.
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, 411345, F16B 2100
Patent
active
052443248
ABSTRACT:
A number of improvements to anchoring retainers are disclosed. The improvements ensure that the retainers are securely attached to walls, and that they do not move during attachment after being attached by a threaded fastener. In one inventive feature, an improved cap for securing the fastener to the wall is disclosed wherein the cap has a thickened portion. In another feature, flip caps are disclosed which secure the anchor within a bore in the wall. In an additional feature of the invention, a tab and groove engagement insures that portions of the retainer do not move relative to each other as the threaded fastener is tightened. Finally, in another feature of the invention, structure is included into the retainer which assists the retainer in folding towards a secured position in the wall.
REFERENCES:
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patent: 4439079 (1984-03-01), Losada
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patent: 4662808 (1987-05-01), Camilleri
patent: 4893973 (1990-01-01), Herg
patent: 4943253 (1990-07-01), Smith
patent: 4984946 (1991-01-01), Phillips, II
patent: 5002445 (1991-03-01), Fischer
Dry Dock Industries, Inc.
Wilson Neill R.
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