Patents by Inventor Don Casper

Don Casper has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4969251
    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, optionally treated with a phosphoric acid/alcohol solution and then followed by application of a phenol-formaldehyde resin, a controlled curing step, and again coiled. The phenol-formaldehyde resin may have incorporated in it solid particles which will improve the dimensional stability, thermal properties and vibration and sound-dampening characteristics of the brake shoes. 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.
    Type: Grant
    Filed: April 17, 1989
    Date of Patent: November 13, 1990
    Assignee: Pittsburgh Coil Technology
    Inventors: Gilbert B. Burkhart, III, Don Casper, David E. Rosenberg
  • Patent number: 4821400
    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.
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: April 18, 1989
    Assignee: Pittsburgh Coil Technology
    Inventors: Gilbert B. Burkhart, III, Don Casper, David E. Rosenberg