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:
Apr. 14, 2009
Filed:
Nov. 28, 2006
Charles Gary Atwell, Mechanicsville, VA (US);
Charles Gary Atwell, Mechanicsville, VA (US);
Philip Morris USA Inc., Richmond, VA (US);
Abstract
A method of removing dust, dirt and the like from the surface of a paper substrate comprises the steps of transporting the paper substrate along a path of travel, and training the paper substrate over and in direct contact with at least a portion of the outer surface of a vacuum drum having openings therein. Suction is applied to the openings as the paper moves over the drum at a slightly different linear velocity from the surface velocity of the drum. Dust, dirt and the like are drawn away from one surface of the paper substrate through the openings of the drum as the paper substrate sweeps over the vacuum drum surface.