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:
Mar. 01, 1977
Filed:
Mar. 12, 1975
Applicant:
Inventor:
Joseph G Fearon, Boise, OH (US);
Assignee:
Morrison-Knudsen Company, Inc., Boise, ID (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B61D / ; B61D / ; B61D / ; B61D / ;
U.S. Cl.
CPC ...
105239 ; 105252 ; 105283 ; 1053 / ; 222536 ;
Abstract
A closure actuating device is disclosed for freeing rotation of discharge control doors for railway hopper cars of the type where the door assembly is supported for rotation about a pivotal axis parallel to and beneath the discharge opening in the railway car. To alleviate sticking of the doors due to compaction of fines on the upper surface of the control doors which cover the discharge openings, the device lowers the control doors to increase the clearance between the terminating edges of the discharge openings and the upper surface of the discharge door.