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:
Jun. 09, 2020
Filed:
Nov. 23, 2015
Takashi Hashimoto, Kanagawa, JP;
Takahisa Koike, Tokyo, JP;
Haruyuki Suzuki, Kanagawa, JP;
Eiki Yoshimizu, Kanagawa, JP;
Norihiro Yamamoto, Kanagawa, JP;
Takashi Hashimoto, Kanagawa, JP;
Takahisa Koike, Tokyo, JP;
Haruyuki Suzuki, Kanagawa, JP;
Eiki Yoshimizu, Kanagawa, JP;
Norihiro Yamamoto, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A permanent magnet motor is provided, which includes a rotor including a rotation axle and a plurality of magnetized rotor magnets on a periphery, which rotor magnets are magnetized to form alternately N-poles and S-poles; first and second ring-shaped-claw-pole units, whose inner circumferences face the rotor magnets, including a plurality of first and second claw-poles along the inner circumference, the first and the second claw-poles being closely adjacent to each other extending alternately in upward and downward axis directions of the rotation axle, bottom sides of the first and the second claw-poles forming a ring shape. A first opening portion is formed in a first joint surface of the first ring-shaped-claw-pole unit, to be joined to the second ring-shaped-claw-pole unit, and the second opening portion is formed in a second joint surface of the second ring-shaped-claw-pole unit, to be joined to the first ring-shaped-claw-pole unit.