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. 24, 2009
Filed:
Dec. 15, 2006
Paul M. Wegman, Pittsford, NY (US);
Paul M. Wegman, Pittsford, NY (US);
Xerox Corporation, Norwalk, CT (US);
Abstract
A butterfly-type valve for controlling toner material flow to a toner container, including, a valve plate which is pivotally disposed in an elongate flow path defined by a passage way, wherein the valve plate is pivotal from a closed position which substantially closes a fluid communication along the path to an open position which maximally permitting fluid communication along the path, a gap area defined between the valve plate and the passage way when the valve plate is in the closed position which allows minimum toner material flow therethrough without compressing the toner material, and a pump for supplying air to the gap area when the valve plate is in the closed position to stop the minimum toner material flow.