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. 10, 1980
Filed:
Apr. 17, 1978
James J Schuller, Crete, IL (US);
Pullman Incorporated, Chicago, IL (US);
Abstract
An open top railway hopper car is provided with longitudinal center dump discharge openings closed by hinged clam shell type of doors. The doors include an arm and linkage arrangement pivoted to the hopper car structure for continually urging the doors to a closed position. The arm and linkage arrangement is opened by means of side of track cams. Locking for each of the doors is provided by means of a locking pawl engaging stops provided on door brackets which preclude opening of the doors during transport. Opening actuation of the arm and linkage arrangement provides for initial displacement of the locking pawls thereby permitting the doors to continue to their open position.