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:
Nov. 22, 1988
Filed:
Nov. 05, 1987
David L Waltke, Beatrice, NE (US);
Hoover Group, Inc., Roswell, GA (US);
Abstract
A slide gate assembly for closure of a discharge opening in a container for bulk material which includes a continuous flexible seal residing in an inverted U-shaped chamber around the perimeter of the discharge opening. This flexible seal has a generally rectangular cross-section with a protruding lip or flap extending inward and downward from the lower inside corner of the seal cross-section. In addition, the seal has compressible ribs in the bottom side for engagement with the upper side of the slide gate. The seal lip or flap provides a squeegee action on the upper side of the slide gate during insertion and removal of the slide gate which insures that the upper surface of the slide gate outside of the seal lip is free of material so that a positive seal between the discharge opening and the slide gate is effected when the upper surface of the slide gate is pressed against the protruding ribs on the bottom side of the seal.