Over-center hollow wall anchor with enhanced holding strength

Details Over-center hollow wall anchor with enhanced holding strength Over-center hollow wall anchor with enhanced holding strength

1990-02-26

1991-02-19

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...

411 55, 411 38, F16B 1304, F16B 2100

Patent

active

049939017

ABSTRACT:
A plastic over-center hollow wall anchor having increased strength without increase in thickness of load bearing members and necessitation of a larger insertion aperture. The bending motion stress on the load bearing arms, which causes the weakening or failure mode of the anchor, is substantially retarded by the inclusion of a small reinforcing boss across the bending area.

REFERENCES:
patent: 4704057 (1987-11-01), McSherry
patent: 4712956 (1987-12-01), Bond et al.
patent: 4828439 (1989-05-01), Giannuzzi
patent: 4878790 (1989-11-01), McSherry et al.

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