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. 19, 1978
Filed:
Mar. 13, 1978
Clarke Reynolds, Tiburon, CA (US);
Richard J Quigley, Los Altos Hills, CA (US);
Other;
Abstract
A safety crank assembly for railroad box car plug doors which is mounted between the door, intermediary of the operating crank assemblies, and the retainer track above the door. The safety crank assembly includes a crank arm having an end portion for engaging the retainer track. The engaging end portion is provided with a shuttle which has a rearwardly positioned and downwardly extending skirt which, in case of failure, exerts a load on a portion of the lower shelf of the track which is located much nearer to the side of the car than the crank arm itself would exert on the shelf in case of failure. The upper portion of the shuttle slides in a U-shaped channel at the top of the retainer track to keep it from rotating with rotation of the crank and exerts a load on the downwardly extending shelf of the U-shaped channel of the retainer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile