The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 30, 1980
Filed:
Dec. 18, 1978
William L Pringle, Grosse Pointe Shores, MI (US);
Other;
Abstract
A brake shoe assembly and an apparatus and method for making same wherein the brake shoe includes a pair of spaced parallel arcuate ribs having outside radii secured to the underside of an arcuate plate with the inside radii of the arcuate ribs having a greater thickness than the outside radii. In accordance with the apparatus and method for making the brake shoe assembly, a straight length of rectangular bar stock having opposite faces is bent into an arcuate shaped member while maintaining the bar stock substantially flat with the opposite faces extending transversely to the axis of bending at a bending station. Subsequently, a plurality of holes are pierced between the opposite faces of the arcuate member at a piercing station. Thereafter, the outside periphery of the opposite faces of the arcuate member are trimmed at a trimming station to a predetermined arcuate rib configuration including a predetermined outside radius with a semicircular portion at one end of the arcuate rib concentric with a hole therein and a notch disposed in the other end of the arcuate rib. Finally, the concentric hole at one end of the arcuate rib and the notch at the other end define working surfaces which are finished to a predetermined machined finish at a finishing station.