Hard wall fastener

Details Hard wall fastener Hard wall fastener

1976-06-21

1978-06-13

Parsons, Jr., Marion

Supports

Mirror or picture type

Suspended

2482162, 248304, 85 10R, 85 84, 85 53, A47G 116

Patent

active

040944905

ABSTRACT:
A fastener adapted to be affixed to a hard wall, such as a concrete wall, has a base through which at least one hole extends. A bushing is releasably held in the hole at one end thereof, and extends outwardly, and a pointed pin is held in the center hole of the bushing. The bushing guides the pin into the wall, upon impact. The hole in the base and the bushing may be provided with flanges to inhibit their relative separation. A hinged cover may be provided on the base, to cover the bushings and pins when the fastener is affixed to a wall. In modification of the invention, the pin and bushing are replaced by a screw which extends into an expandable fastener in the wall. The expandable fastener may be formed as a unitary element with the base. In one method for making the fastener, a plurality of bushings are die cast with interconnecting gates, and the interconnected bushings are employed to serve as part of the die for die casting the base, whereby the gates become imbedded in the base to form a frangible means for holding the bushings in the base.

REFERENCES:
patent: 201695 (1878-03-01), Merrill
patent: 332198 (1885-12-01), Gridley
patent: 1580569 (1926-04-01), Pleister et al.
patent: 2424602 (1947-07-01), DE Swart
patent: 2775919 (1957-01-01), Fischer
patent: 2857597 (1958-10-01), Morgan
patent: 3216680 (1965-11-01), Musante
patent: 3232572 (1966-02-01), Ekstrom
patent: 3330525 (1967-07-01), Weinstein
patent: 3385158 (1968-05-01), Morin
patent: 3455199 (1969-07-01), Semanchin
patent: 3861631 (1975-01-01), Shorin
patent: 3955308 (1976-05-01), Fischer
patent: 3955462 (1976-05-01), Thorsman

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