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. 30, 2016
Filed:
Sep. 27, 2013
Japan Tobacco Inc., Tokyo, JP;
Hiroyuki Torai, Tokyo, JP;
Satoshi Nakamura, Tokyo, JP;
JAPAN TOBACCO INC., Tokyo, JP;
Abstract
A filter manufacturing machine includes a forming device for forming filter tow into a hollow rod-shaped continuous filter body, a forming tube included in the forming device and having a tubular forming path through which the filter tow is passed while being brought together, a mandrel arranged in the forming tube and forming the tubular forming path in cooperation with the forming tube, and a heat treating section included in the forming tube and configured to heat the filter tow while the filter tow passes through the tubular forming path. The mandrel has a small-diameter portion located at the inlet of the forming tube, a large-diameter portion located at the outlet of the forming tube, and a diameter expansion portion located between the small- and large-diameter portions. The diameter expansion portion is located downstream of the heat treating section as viewed in the moving direction of the filter tow.