Hollow wall anchor with enhanced holding strength

Details Hollow wall anchor with enhanced holding strength Hollow wall anchor with enhanced holding strength

1990-01-29

1991-07-02

Lindsey, Rodney M.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Having separate expander means

Bulged by axially contracting ends

411 55, 411 37, 411908, 411340, F16B 1304

Patent

active

050281860

ABSTRACT:
A plastic hollow wall anchor having folding arms for insertion within a limited diameter aperture in a substrate such as a wall. The arms, adjacent their overlapping attachment areas, are configured to provide a "sharp knife edge" intersection, whereby a spacing between the attached arms, during folding and aperture insertion, is substantially eliminated. The load bearing arms are concomitantly thickened and thereby strengthened within the limited dimension afforded by the aperture. Alternatively, the overall dimensions of the anchor are reduced, while maintaining the load bearing arm dimensions, thereby enabling the use of a smaller diameter for the insertion aperture without decrease in anchor holding strength.

REFERENCES:
patent: 3651734 (1972-03-01), McShrry
patent: 4197781 (1980-04-01), Giannuzzi
patent: 4306824 (1981-12-01), Tanaka et al.
patent: 4397595 (1983-08-01), Smith et al.
patent: 4491447 (1985-01-01), Smith et al.
patent: 4704057 (1987-11-01), McSherry
patent: 4828439 (1989-05-01), Giannuzzi
patent: 4878790 (1989-11-01), McSherry et al.

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