Screw anchor for drywall and blind holes

Details Screw anchor for drywall and blind holes Screw anchor for drywall and blind holes

1997-11-12

1998-08-11

Wilson, Neill R.

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

Having separate expander means

Frangible member

411 61, 411182, 411908, F16B 1304, F16B 3704

Patent

active

057918457

ABSTRACT:
A device for anchoring a threaded fastener in a drywall or blind hole is molded in one flat piece having two half cylinders joined by a thin frangible hinge. Each half-cylinder carries half of a threaded bore divided axially. When folded together the two half-cylinders form a cylindrical headed anchor with a continuously threaded passage extended part way to the hinge. A threaded fastener advances readily down the bore until the unthreaded portion is reached. The fastener, as it advances in that portion, forces the halves apart, rupturing the hinge and anchoring the device.

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