Ralph P Tenuta

US Patent:

50678647, Nov 26, 1991

Filed:

Jul 27, 1990

Appl. No.:

7/560068

Inventors:

George G. Dewey - Prospect Heights IL
Ralph D. Tenuta - Mount Prospect IL

Assignee:

Illinois Tool Works Inc. - Glenview IL

International Classification:

F16B 2100

US Classification:

411344

Abstract:

An improved fastener mountable within a plasterboard wall from one side of the wall and used with a screw comprises a fastener body and a toggle clamp pivotable between an insertion position and a toggle position. The fastener has a drilling tip adapted to drill a hole of sufficient diameter so as to accommodate the fastener, except for the fastener head which is adapted to coact with a driving tool. In a first embodiment, the drilling tip is an integral part of the fastener body and extends axially beyond the toggle clamp in its insertion position. In a second embodiment, the drilling tip is an integral part of the toggle clamp and extends axially beyond the fastener body in the insertion position of the toggle clamp. In each embodiment, the fastener is self-drilling.