Mushrooming expandable anchor

Details Mushrooming expandable anchor Mushrooming expandable anchor

2007-08-27

2009-02-24

Batson, Victor (Department: 3677)

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

Having separate expander means

With hole forming means

C411S034000, C411S037000, C411S055000, C411S059000

Reexamination Certificate

active

07494310

ABSTRACT:
A self-anchoring fastening device for installation in supports for hanging pipes wires or other articles in ceilings is shaped for a socket to drive the device for an easy installation process. The device comprises a collapsible anchoring portion having radially expanding anchoring strips, which will not pull out of a hole drilled in a support. A drill drills a hole in a support and an expandable anchor is inserted through the hole. Threads internal to the expandable anchor cooperate with threads on a screw inserted therein to collapse the expandable anchor, providing anchoring strips over the hole such that the expandable anchor cannot be pulled out of the hole. A threaded portion of the base of the screw is suitable for attaching the article to be hung. The base may be a swivel head type. The drill may be on the expendable anchor assembly.

REFERENCES:
patent: 3789728 (1974-02-01), Shackelford
patent: 3888156 (1975-06-01), Fima
patent: 4657456 (1987-04-01), Anquetin
patent: 4789282 (1988-12-01), Abraham
patent: 4789283 (1988-12-01), Crawford
patent: 4836062 (1989-06-01), LaTorre
patent: 4875815 (1989-10-01), Phillips, II
patent: 4986710 (1991-01-01), Kovarik
patent: 5207750 (1993-05-01), Rapata
patent: 6935821 (2005-08-01), Bodin et al.
patent: 7296499 (2007-11-01), Bodin et al.

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