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:
Mar. 27, 2012
Filed:
Dec. 19, 2008
Applicants:
Loren Duvekot, Goochland, VA (US);
Michael S. Braunshteyn, Richmond, VA (US);
Inventors:
Loren Duvekot, Goochland, VA (US);
Michael S. Braunshteyn, Richmond, VA (US);
Assignee:
Philip Morris USA Inc., Richmond, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 65/02 (2006.01); B29C 65/52 (2006.01); B32B 37/06 (2006.01); B32B 37/28 (2006.01); B32B 38/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A hollow filter tube is produced with a longitudinal seam and a fixed diameter. In the formation of the hollow tube glue is applied along a longitudinal side edge portion of an endless strip, and the strip is then formed into a tubular shape with an unglued longitudinal edge portion tucked directly under and against the glued side edge portion. The hollow tube is then heated to drive moisture from the glue and size and shape the hollow tube. Ultimately the formed hollow tube is cut into specific lengths.