Metal deforming – Process – Deforming sheet metal
Patent
1990-01-04
1990-07-17
Combs, E. Michael
Metal deforming
Process
Deforming sheet metal
10 34, B21G 326
Patent
active
049413406
ABSTRACT:
An improved wall fastener for hollow walls, the fastener having two spreadable anchoring blades designed to spread behind the wall following insertion of a screw thereinbetween. The fastener is made of thin sheet metal which has been hardened through a heat treating process, such as quenching. Complementary engaging means on the blades are used to hold the blades together during the heat treatment and to prevent the separation thereof until the screw insertion.
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Nowak Thomas E.
Smith Edward J.
Vassiliou Eustathios
Combs E. Michael
Krikelis C. S.
Vassiliou E.
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