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:
Feb. 11, 1997
Filed:
Feb. 06, 1996
Alois J Kosch, Columbus, NE (US);
Industrial Engineering Co., Columbus, NE (US);
Abstract
An apparatus for opening and closing the discharge doors of a railroad hopper car is described comprising a mounting frame secured to the hopper car forwardly of the discharge door and having a pivot frame pivotally secured thereto which is interconnected to the discharge door by an elongated linkage. A pivot arm is also pivotally secured to the mounting frame and has an air cylinder pivotally secured thereto which is interconnected to the pivot frame. Extension of the hydraulic cylinder causes the pivot frame to pivot with respect to the mounting frame thereby causing the adjustable linkage to open the door. Retraction of the cylinder rod into the cylinder causes the pivot frame to pivot with respect to the mounting frame to cause the adjustable linkage to close the discharge door. When the door is in its closed position, the cylinder rod of the air cylinder is in its retracted position. The alignment of the various components and pivot points ensures that the discharge door cannot come open during transportation should the air cylinder fail.