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. 13, 1991
Filed:
Aug. 16, 1990
Applicant:
Inventors:
Bernard L Tews, Lansing, IL (US);
Phillip G Przybylinski, Schererville, IN (US);
Assignee:
Trinity Industries, Inc., Dallas, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L / ;
U.S. Cl.
CPC ...
73129 ; 7386254 ;
Abstract
A brake tester for measuring static force levels of the brake shoes and hand brake, and the pressure level of the brake cylinder of a railcar. Brake shoe load cells are used to measure brake shoe forces by creating point contact with the railcar wheel and undergoing deflection during application of a brake force. A clevis load cell measures hand brake force by simulating the clevis and produces an output from a plurality of strain gauges.