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:
Aug. 10, 1993
Filed:
Jul. 02, 1991
Applicant:
Inventor:
C Dale Christie, Naperville, IL (US);
Assignee:
Amsted Industries Incorporated, Chicago, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16D / ;
U.S. Cl.
CPC ...
1882 / ; 188 29 ; 188 / ; 188252 ;
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.