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:
Nov. 16, 1999
Filed:
Jun. 10, 1997
Takayuki Irikura, Tokyo, JP;
Japan Tobacco Inc., Tokyo, JP;
Abstract
A grading device includes an assembly drum with feeding grooves, and a grading drum arranged adjacent to the assembly drum and rotating in the opposite direction from that of the assembly drum at twice the peripheral speed. The grading drum has a pair of groove arrays which have grading grooves with a pitch twice that of feeding grooves on the assembly drum. The grading grooves of adjacent arrays are shifted from each other by a half pitch. The grading device further includes a pair of fork claws for holding a pair of charcoal plugs received in the feeding groove in cooperation with the outer peripheral surface of the grading drum when the paired charcoal plugs on the assembly drum pass by the grading drum. The paired charcoal plugs are put into the corresponding grading groove while rolling on the grading drum.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile