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:
Aug. 09, 1988
Filed:
Mar. 20, 1987
Applicant:
Inventors:
Deon A van der Merwe, Upper Houghton, Johannesburg, Transvaal Province, ZA;
Brian A Steinhobel, Upper Houghton, Johannesburg, Transvaal Province, ZA;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B61D / ;
U.S. Cl.
CPC ...
414378 ; 105250 ; 105280 ; 222505 ; 222556 ; 414387 ;
Abstract
A bottom discharge hopper includes an elongated rectangular discharge opening closable by two discharge doors hinged along their outer edges to the hopper so that the doors are biased to an open position. Each door includes control means comprising a biasing member pivotally mounted to the hopper which biases a runner at each end of the door along a runner track on the door towards a position corresponding to the closed position of the door, the runners being located substantially directly below the pivot of the biasing member in this closed position.