|United States Patent||4,869,331| |Borchard||Sept. 26, 1989|
|Inventors:||Borchard; John S. (97-A Lowell Ave., Newton, MA
02160).| |Filed:||Feb. 6, 1989| |Intl. Cl.:||G01G 3/08; F16F
1/18; F16F 1/20;| |U.S. Cl.:||177/229.; 267/47.;| |Field of
Search:||158-165;47;260 U.S. Patent Documents |1,904,188||Apr.,
1933||Zahm et a;/| Primary Examiner: Miller, Jr.; George H. 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, crosslike 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. 15 Claims, 26 Drawing
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