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. 28, 1981
Filed:
May. 09, 1979
Applicant:
Inventor:
Willis H Knippel, Palos Park, IL (US);
Assignee:
Pullman Incorporated, Chicago, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65G / ;
U.S. Cl.
CPC ...
414387 ; 1052411 ;
Abstract
A railway hopper car includes laterally positioned bottom dump discharge openings and doors which are locked in a closed position by a latching mechanism actuated from a ground-mounted trip lever. After the car has been dumped it is moved adjacent to a ground-mounted cam which is engaged by cam followers on the doors thereby swinging the doors again to the closed position.
Knippel, Willis. (1981). Hopper car door operating mechanism (U.S. Patent No. 4280778). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4280778
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile