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:
Apr. 16, 2013
Filed:
Jun. 10, 2010
Shigemitsu Suzuki, Takahama, JP;
Naoto Toma, Kariya, JP;
Shigemitsu Suzuki, Takahama, JP;
Naoto Toma, Kariya, JP;
Aisin Seiki Kabushiki Kaisha, Kariya-Shi, Aichi-Ken, JP;
Abstract
A variable valve timing control apparatus includes a driving rotor, a driven rotor coaxially arranged with the driving rotor, a fluid pressure chamber defined between the driving rotor and the driven rotor, a partition portion arranged at one of the driving rotor and the driven rotor and dividing the fluid pressure chamber into advanced and retarded angle chambers, a first fluid control mechanism controlling supply and discharge of a hydraulic fluid to and from the fluid pressure chamber, a first phase restriction portion restricting and releasing a relative rotational phase between the driving rotor and the driven rotor within and from a first restriction range, a second phase restriction portion restricting and releasing the relative rotational phase within and from a second restriction range, and a second fluid control mechanism controlling the supply and discharge of the hydraulic fluid to and from the first and second phase restriction portions individually.