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:
Dec. 28, 1999
Filed:
Feb. 18, 1998
Steven Alan Curry, Nicholasville, KY (US);
Paul Douglas Horrall, Lexington, KY (US);
David Lee Merrifield, Lexington, KY (US);
Daniel George Mlejnek, Lexington, KY (US);
James John Molloy, Lexington, KY (US);
Harald Portig, Versailles, KY (US);
Gregory Lawrence Ream, Lexington, KY (US);
Richard Andrew Seman, Jr, Lexington, KY (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
A toner cartridge (1) contains a photoconductive drum (49) having a central shaft (47). Gear (145) turns with the drum and has a stud (602). A coil spring (604) is mounted on the stud to form a spring clutch which is unwound by the rotation of the drum during imaging. Alternatively, a flat frictional surface is pressed against the side wall (600b) of the gear. Both contact areas have a light grease. The drag forces provide accurate, smooth operation during imaging.