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:
Jan. 03, 2012
Filed:
Mar. 02, 2009
Hiroshi Asanuma, Chita, JP;
Katsumi Ishida, Toyoake, JP;
Koichi Suzuki, Obu, JP;
Naoya Okada, Kasugai, JP;
Shoichiro Morinaka, Toyota, JP;
Hiroshi Asanuma, Chita, JP;
Katsumi Ishida, Toyoake, JP;
Koichi Suzuki, Obu, JP;
Naoya Okada, Kasugai, JP;
Shoichiro Morinaka, Toyota, JP;
Aisan Kogyo Kabushiki Kaisha, Obu-Shi, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
An electromagnetic PCV valve includes a valve seat, a valve element, a step motor for moving the valve element, and a housing that houses the valve seat, the valve element, and the step motor. When the valve element is moved by the step motor, a size (an opening degree) of a blow-by gas passage defined between the valve seat and the valve element is changed. The step motor is configured to selectively receive energization for moving the valve element and energization for holding the valve element in a fixed position. A heating apparatus of the PCV valveincludes a cover member and an output shaft that conducts heat generated in the step motor by energization to the valve element and the valve seat, and an electronic control unit (ECU) for conducting energization of the step motor to hold the valve element in the fixed position.