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:
Sep. 11, 2007
Filed:
Apr. 21, 2004
Applicants:
Kunihiro Kawachi, Tokyo, JP;
Kazunobu Miura, Hachioji, JP;
Ken Nonaka, Hachioji, JP;
Kyoichi Mizuno, Tama, JP;
Inventors:
Kunihiro Kawachi, Tokyo, JP;
Kazunobu Miura, Hachioji, JP;
Ken Nonaka, Hachioji, JP;
Kyoichi Mizuno, Tama, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65H 3/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A power transmission device includes a driving gear having gears over an entire circumferential surface thereof, a follower gear including an intermittent gear having a toothless portion, and a controller for controlling the follower gear to be engaged with or disengaged from the driving gear. Each of the driving gear and the follower gear is a helical gear.