Patents Represented by Attorney F. S. Gregoreczyk

Find this attorney in the Justia Lawyer Directory

  • Railroad brake shoe
    Patent number: 5341904
    Abstract: A tread brake shoe for a railroad wheel has a cross-section with a bidirectional laminate structure, which includes a core element of a high-friction material for contacting the wheel tread and, at least one low-friction element positioned on the high-friction material sidewall for contact with the wheel flange and to inhibit wheel flange contact with the high friction material.
    Type: Grant
    Filed: March 26, 1993
    Date of Patent: August 30, 1994
    Assignee: Amsted Industries Incorporated
    Inventor: C. Dale Christie