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:
Jun. 20, 1978
Filed:
Aug. 17, 1977
Applicant:
Inventor:
Willis H Knippel, Palos Park, IL (US);
Assignee:
Pullman Incorporated, Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E05F / ;
U.S. Cl.
CPC ...
49352 ; 49220 ; 49360 ;
Abstract
A cable drive mechanism for opening and closing a sliding box car door includes a high friction drive pulley carrying a cable which is anchored at opposite ends to the sides of the box car and a low friction guide pulley which is in aligning relation to the drive pulley. The drive pulley is manually rotated for sliding the box car door between open and closed positions.