Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – With hole forming means
Patent
1995-06-07
1997-11-25
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
With hole forming means
411 38, 411344, 411908, F16B 1304, F16B 2100
Patent
active
056904541
ABSTRACT:
A retainer has inner and outer subsections that are hingedly connected. An outer portion is hingedly connected to the outer subsections. The outer subsection rotates on its hinge relative to the outer portion, and axially back towards the inner surface of the wall to contact the wall. The inner subsection extends to a connection with the inner head portion. The inner and outer subsections are in abutting contact adjacent to the hinge. The abutting contact creates a holding force at the point of contact between the hinge and the inner wall. This results in a truss-like configuration that securely retains the retainer in the wall.
REFERENCES:
patent: 2018251 (1935-10-01), Croessant
patent: 2148977 (1939-02-01), Buck
patent: 3316796 (1967-05-01), Young
patent: 3385156 (1968-05-01), Polos
patent: 3453927 (1969-07-01), Moore
patent: 4642009 (1987-02-01), Fischer
patent: 4875815 (1989-10-01), Phillips, II
patent: 4920618 (1990-05-01), Iguchi
patent: 5205688 (1993-04-01), Sundstrom
patent: 5380135 (1995-01-01), Anquetin
Dry Dock Industries, Inc.
Wilson Neill R.
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