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:
Sep. 29, 1981
Filed:
Apr. 26, 1979
Applicant:
Inventor:
Willis H Knippel, Palos Park, IL (US);
Assignee:
Pullman Incorporated, Chicago, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65G / ; B61D / ; B61D / ;
U.S. Cl.
CPC ...
105252 ; 1052412 ; 1053 / ; 292216 ; 414387 ;
Abstract
The side discharge doors of a railway hopper car are maintained in a closed and locked position by a rotatable latch element which is engaged by a stop and lock member. The stop and lock member is connected to a linkage rigging arrangement which is moved by a ground actuated operating and tripping mechanism. The tripping mechanism includes a cam actuated arm which by linkage means transmits vertical movement to horizontal movement of the linkage rigging which actuates the latch and locking members of the doors.