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:
May. 04, 1993
Filed:
Jul. 24, 1992
James D Pileggi, Beaverton, OR (US);
Jon B Zaerr, Portland, OR (US);
Gunderson, Inc., Portland, OR (US);
Abstract
A multi-unit railroad car has adjacent ends of adjacent car units carried upon a shared truck and interconnected by an articulating coupling having a female part attached to one of the car units and a male part attached to the other of the car units. Side bearings for carrying loads generated by the car unit whose end has the female coupling part are of an anti-friction type, and side bearings associated with the car unit whose end has the male coupling part are of a constant-contact, limited-friction type so that turning moments exerted by the car units on the shared truck are kept within a desirable range and are kept balanced against each other to avoid either one of the articulated interconnected car units from adversely steering the shared truck during a curve.