Metal deforming – Process – Deforming sheet metal
Patent
1983-05-16
1984-10-02
Larson, Lowell A.
Metal deforming
Process
Deforming sheet metal
72339, B21D 5300
Patent
active
044740450
ABSTRACT:
The spring guide rail has several centering fingers and a bottom rail and is made out of a one-piece sheet metal strip into which substantially rectangular recesses are punched so that a ladder-type structure is formed with a pair of longitudinal bars being interconnected by cross bars. By repeated bending operations around given longitudinal axes the two parts of the bottom rail are formed by the longitudinal bars and the centering fingers are formed by the cross bars. Between the sections of the cross bars folded to face each other there is a space and in the bottom rail area projections are arranged which ensure the spacing between the opposite parts of the bottom rail. Thus, a simple and stable spring guide rail with a safe guidance is provided for the vane lifting springs.
REFERENCES:
patent: 2004555 (1935-06-01), Kleinmann et al.
patent: 3073020 (1963-01-01), Reynolds
Herr Anton
Kunze Lothar
Stadler Bruen
Vogt Harald
Chaban Marvin M.
IT&T Industries, Inc.
Larson Lowell A.
Raden James B.
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