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:
Apr. 20, 1982
Filed:
Sep. 26, 1980
Applicant:
Inventor:
Richard L Weaver, Myerstown, PA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B67D / ;
U.S. Cl.
CPC ...
222504 ; 215215 ; 215252 ; 222505 ; 222549 ; 222557 ;
Abstract
An openable discharge closure is provided, for silo bottom unloaders, in which the closure comprises a door-like member that is moved vertically downwardly and transversely away from the discharge opening. A sweeper or broom may be mounted for engagement by the upper surface of the closure as it moves laterally away from the opening. The motion of the closure is controlled by a single drive mechanism that provides both vertical and pivotal movement, with the vertical movement enabling the door to move upwardly or downwardly, and the pivotal movement enabling the door or closure to move transversely.