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. 14, 1979
Filed:
May. 26, 1977
Applicant:
Inventors:
Keith J Hallam, Merrillville, IN (US);
Willis H Knippel, Palos Park, IL (US);
Assignee:
Pullman Incorporated, Chicago, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B61C / ; B61F / ; B61F / ; B61F / ;
U.S. Cl.
CPC ...
105166 ; 105135 ; 105136 ; 105168 ; 105176 ; 1051 / ;
Abstract
A railway car includes a chassis supported on two sub-frames which are relatively pivotally movable. The sub-frames support propulsion motors, differentials, and driven flanged wheels. And intermediate steering axle and wheel assembly are transversly movable in response to track curvature and a steering beam extending outwardly from the steering axle pivots the sub-frames for steering movement.
Hallam, Keith. (1979). Self steering railway car (U.S. Patent No. 4164188). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4164188
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile