Mushrooming expandable anchor

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – With hole forming means

Reexamination Certificate

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Details

C411S034000, C411S037000, C411S055000, C411S059000

Reexamination Certificate

active

06935821

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.

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AVK Industrial Products, A-R Product Page with Installation Sequence at www.avkfasteners.com.

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