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:
Dec. 11, 1990
Filed:
Nov. 30, 1989
Applicant:
Inventor:
Russell G Altherr, Munster, IN (US);
Assignee:
AMSTED Industries Incorporated, Chicago, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B61G / ;
U.S. Cl.
CPC ...
213155 ; 213156 ;
Abstract
Am improved railway vehicle coupler head is provided having knuckle pin retaining element which is free to fully rotate with the knuckle pin to enable continuous rotation of the knuckle pin during use. An elastic ring located within a circumferential groove on a bottom portion of the knuckle pin precludes the knuckle pin from unintentional upward removal during use while allowing for continuous rotation therewithin. The continuous rotation of the knuckle pin allows for the distribution of stress about the circumference of a knuckle pin resulting in a longer fatigue life for the knuckle pin.