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:
Aug. 16, 2005
Filed:
Nov. 18, 2003
Mark Duane Foster, Lexington, KY (US);
Robert Watson Mcalpine, Lexington, KY (US);
Robert Francis Soto, Lexington, KY (US);
Gregory Scott Tigges, Frankfort, KY (US);
Mark Duane Foster, Lexington, KY (US);
Robert Watson McAlpine, Lexington, KY (US);
Robert Francis Soto, Lexington, KY (US);
Gregory Scott Tigges, Frankfort, KY (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
A vent integral with the top surface of toner hopper () having three labyrinth channels () oriented in one direction and three labyrinth channels () oriented in an orthogonal direction. Each labyrinth communicates with the inside of the hopper by a hole () and the end of each labyrinth communicates with filter pad () held in a basin () formed in the top surface of hopper (). Cover () closes the vent except for hole () over the center of pad ().