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. 18, 2009
Filed:
Mar. 30, 2006
Akikazu Uchida, Kariya, JP;
Hiroshi Nakamura, Nishio, JP;
Kunihiro Tsuzuki, Obu, JP;
Shinichi Yokoyama, Gifu, JP;
Yasunori Kobayashi, Toyohashi, JP;
Akikazu Uchida, Kariya, JP;
Hiroshi Nakamura, Nishio, JP;
Kunihiro Tsuzuki, Obu, JP;
Shinichi Yokoyama, Gifu, JP;
Yasunori Kobayashi, Toyohashi, JP;
Denso Corporation, Kariya, JP;
Abstract
A self-opened type valve is opened by motor torque of an electric motor. Therefore, a diaphragm is not necessary for opening the valve, and downsizing of a valve drive apparatus for opening the valve is possible. Since the valve is assembled to the motor shaft of the electric air pump via a motion-direction conversion mechanism, an opening action of the valve can start in a short time after a rotational action of the impeller of the electric air pump starts, so that control responsiveness is improved. At a rotation stop of the impeller of the electric air pump, the valve can be maintained in a fully closed condition by an urging force of the coil spring, thereby preventing exhaust gases or condensed water from entering into an inside of the electric air pump.