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:
Apr. 18, 1989
Filed:
Apr. 04, 1988
Applicant:
Inventors:
Gilbert B Burkhart, III, Washington, PA (US);
Don Casper, Meadowlands, PA (US);
David E Rosenberg, Pittsburgh, PA (US);
Assignee:
Pittsburgh Coil Technology, Washington, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23P / ;
U.S. Cl.
CPC ...
295274 ; 156322 ; 1563311 ; 164527 ; 427327 ; 428147 ;
Abstract
Pre-glued, coil-coated brake shoe stock is manufactured on a continuous coil coating line wherein a heavy gauge steel strip is continuously fed through abrasion and surface cleaning steps, spray treated with a phosphoric acid/alcohol solution followed by a spray of phenol-formaldehyde resin, a controlled curing step, and again coiled. Brake shoes stamped from the stock made under the particular conditions described have higher shear strength and adhesion to the brake pad or lining materials than those of the prior art and have fewer problems in manufacturing.