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United States Patent 4,828,057
Borchard May 9, 1989

Leaf spring

Inventors: Borchard; John S. (36 Whitney Tavern Rd., Weston, MA 02193).
Appl. No.: 141,213
Filed: Jan. 6, 1988
Intl. Cl.: G01G 3/02; F16F 1/18;
U.S. Cl.: 177/225.; 267/163.;
Field of Search: 158-160;163;164;36.1;47

References Cited

U.S. Patent Documents

2,036,637 Apr., 1936 Kingsbury
2,490,320 Dec., 1949 Pashby
2,676,404 Apr., 1954 Peckron et al.
3,752,246 Aug., 1973 Sullivan
4,738,324 Apr., 1988 Borchard 177/225

Foreign Patent Documents

0204286 Apr., 1939 CHX 267/164

Primary Examiner: Miller, Jr.; George H.

Abstract

A leaf spring made of a flat, thin, metallic strip comprised of an elongated flexible member with two parallel sides terminating at either end into flat rectangular, cross-like or circular shapes with a width approximately twice the width of the strip at its midpoint. The ends are crimped or cold pressed downward and then outward near their edges to form flanges. The crimped or pressed ends become each foot of the leaf spring.

13 Claims, 26 Drawing Figures

        

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