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. 17, 2018
Filed:
Dec. 24, 2014
Aisin Seiki Kabushiki Kaisha, Kariya-shi, Aichi, JP;
AISIN SEIKI KABUSHIKI KAISHA, Kariya-Shi, Aichi, JP;
Abstract
Provided is a valve opening/closing timing control device that can speedily achieve a stable operation at the time of starting an engine. The device includes a drive-side rotating body that is rotated in synchronism with a crankshaft and has a plurality of projecting portions, a driven-side rotating body that has a partition portion which forms an advance angle chamber and a retard angle chamber and that is rotated together with a camshaft for valve opening/closing, an intermediate lock mechanism switchable between a locked state and an unlocked state, a pump for supplying fluid to the advance angle chamber, the retard angle chamber or the intermediate lock mechanism, and a communication passage configured to establish communication between the advance angle chamber and the retard angle chamber disposed adjacent in a circumferential direction when the intermediate lock mechanism is under the locked state.