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:
Jan. 27, 2009
Filed:
Dec. 28, 2006
Steven F. Spiers, Richmond, VA (US);
Jeremy J. Straight, Midlothian, VA (US);
Steven F. Spiers, Richmond, VA (US);
Jeremy J. Straight, Midlothian, VA (US);
Philip Morris USA Inc., Richmond, VA (US);
Abstract
Method and apparatus for forming filter tubes comprises delivering a filter element to a flute on a first drum having vacuum for securing the filter element thereto. First and second tube forming rollers axially engage opposite ends of the filter element. A second drum accepts and cuts a continuous paper web with a glue pattern thereon into paper pieces, and a cut paper piece is delivered to the filter element. The paper piece is then rolled around the filter element and the tube forming rollers to form a cylindrical shape. The tube forming rollers are axially disengaged to thereby produce a filter tube with hollow ends and a control positioned filter element.