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:
Jul. 22, 1980
Filed:
Oct. 25, 1978
Applicant:
Inventor:
Willis H Knippel, Palos Park, IL (US);
Assignee:
Pullman Incorporated, Chicago, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B61D / ; B65G / ;
U.S. Cl.
CPC ...
414387 ; 1052412 ; 292216 ; 298 / ;
Abstract
A hopper car door locking mechanism includes a rotatable latch member which includes a keeper receiving portion. The latch member also includes a positioning portion providing stops which are engaged by a rotatable locking pawl in the closed position of the hopper car door. The rotatable locking pawl includes a cam device which is pivoted in response to reciprocating movement of a rod having a suitable cam surface. The rod also includes a stop device which with the rotatable latch member provides a second stop which therefore provides for double locking of the door.