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:
Jul. 23, 2013
Filed:
Jan. 18, 2007
Toshiro Fujii, Kariya, JP;
Fumihiro Suzuki, Kariya, JP;
Yoshiyuki Nakane, Kariya, JP;
Masanao Kagami, Kariya, JP;
Katsutoshi Shiromaru, kariya, JP;
Hiroaki Kato, Kariya, JP;
Toshiro Fujii, Kariya, JP;
Fumihiro Suzuki, Kariya, JP;
Yoshiyuki Nakane, Kariya, JP;
Masanao Kagami, Kariya, JP;
Katsutoshi Shiromaru, kariya, JP;
Hiroaki Kato, Kariya, JP;
Kabushiki Kaisha Toyota Jidoshokki, Aichi-ken, JP;
Abstract
An electric pump for supplying a hydrogen gas to a fuel cell includes a rotary shaft rotatably inserted through an electric motor, a transmitting member provided on one of an outer peripheral surface of the rotary shaft and an inner peripheral surface of the electric motor so as to be rotatable therewith, and a groove formed in the other of the outer peripheral surface of the rotary shaft and the inner peripheral surface of the electric motor for the transmitting member to be inserted therein. The groove transmits a rotary torque of the electric motor to the rotary shaft by contacting an inner surface of the groove and the transmitting member and has an opening width along a rotary direction of the rotary shaft which is larger than the width of the transmitting member. The groove and the transmitting member produce an impact torque when the electric pump is started.