Title: Hollow wall fastener

Abstract: A hollow wall fastener using a specially shaped or conventional toggle bolt and a toggle anchor which is pointed and which has an open groove for receiving the toggle bolt. The end of the groove has a threaded portion which cooperates with a threaded portion of an aperture opposite the groove to permit the anchor to pivot with respect to the bolt to a position where the bolt is threadably engaged and locked in the threaded portions of the anchor, forming a "T" configuration behind the surface of the hollow wall. Thereafter the bolt may be rotated, e.g. by turning a screw or fastener body, to draw the anchor tightly against the interior of the hollow wall.

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Inventors: Einhorn, Ruediger (Katonah, NY, US)
Chasen, Lee R. (Port Chester, NY, US)
Blake, III, Joseph W. (South Salem, NY, US)

Application Number: 863241
Filing Date: 1977-12-22
Publication_date: 1980-04-08
Assignee: Coats & Clark, Inc. (Stamford, CT)
Primary Class(es): 248/546 248/231.21, 403/252, 411/29, 411/340
Other Classes:
US Patent Ref:

231334	Aug, 1880	Kraus	85/3.
429781	Jun, 1890	Shimer	248/360.
860762	Jul, 1907	McGrady	248/216.
918063	Apr, 1909	Klahre	85/3.
1168257	Jan, 1916	Kennedy	85/3.
1738133	Dec, 1929	Anderson	85/3.
2942819	Jun, 1960	Brogan	248/71.
3995822	Dec, 1976	Einhorn et al.	248/304.

Other Refs: 10046

Mar, 1894	GB

Primary Examiner: Schultz, William H.
Assistant Examiner:
Attorney: Burgess, Ryan and Wayne