Patents by Inventor Michael B. Mazur

Michael B. Mazur 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).

  • Low noise railroad retarder brake shoe structure
    Patent number: 4393960
    Abstract: A brake shoe structure includes a series of alternating long brake shoes and short brake shoes mountable on adjacent brake beams in a railroad car retarder. The length of the long brake shoe is such that the long brake shoe symmetrically straddles two adjacent brake beams. The length of the short brake shoe is such that the shoe occupies the spacing on the brake beams between two long brake shoes. The long brake shoes are affixable to each of the brake beams at at least two points. The brake shoes contain a plurality of slanting slots in their braking surfaces for interrupting harmonics producing screeching noises during retardation. The brake shoes may be formed of steel or heat treatable ductile iron.
    Type: Grant
    Filed: January 21, 1981
    Date of Patent: July 19, 1983
    Assignee: AAA Sales & Engineering, Inc.
    Inventors: Michael B. Mazur, Emil M. Punko