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:
Sep. 04, 2012
Filed:
Dec. 31, 2009
Daniel Lee Carter, Georgetown, KY (US);
Larry Steven Foster, Lexington, KY (US);
Robert Michael Meadows, Nicholasville, KY (US);
Harald Portig, Versailles, KY (US);
David Erwin Rennick, Georgetown, KY (US);
Brian Reed Spencer, Lexington, KY (US);
Daniel Lee Carter, Georgetown, KY (US);
Larry Steven Foster, Lexington, KY (US);
Robert Michael Meadows, Nicholasville, KY (US);
Harald Portig, Versailles, KY (US);
David Erwin Rennick, Georgetown, KY (US);
Brian Reed Spencer, Lexington, KY (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
An Oldham coupler assembly capable of transferring rotary power between two shafts in a developer unit of an image forming apparatus that includes an input plate and an output plate made of metal and a star plate made in plastic mechanically coupled and positioned in between the input plate and the output plate. A spline component made of metal is rigidly and integrally attached to the input plate, the spline component including a tubular spline portion that includes a plurality of wear strips made of plastic, the output plate having a plastic material coated along a portion of an outside diameter of the output plate. The input and output plates further include a plurality of openings to receive a plurality of wheels and pins. This structure allows a sufficiently stiff drive system to substantially eliminate fine line jitter by raising the natural frequency of the drive system.