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:
Jun. 18, 1991
Filed:
Nov. 13, 1989
Applicant:
Inventors:
Vladimir S Guslits, Rochester, NY (US);
John P Swapceinski, Bergen, NY (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355253 ; 118657 ; 355251 ; 355260 ;
Abstract
A development apparatus for use in electrostatographic copiers and printers includes a housing and a self-closing mechanism for completely and efficiently unloading or purging spent developer material from such apparatus. The mechanism further includes an aperture for discharging developer material from the housing, a self-closing conduit member connected to the aperture, and vacuum source for selectively transporting and removing developer material from the conduit member.