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:
Oct. 23, 2018
Filed:
Dec. 22, 2014
Aisin Seiki Kabushiki Kaisha, Kariya-shi, Aichi, JP;
AISIN SEIKI KABUSHIKI KAISHA, Kariya-shi, Aichi, JP;
Abstract
This disclosure reliably causes transition to a locked state at the time of internal combustion engine deactivation and reliably causes transition to the locked state when a locking mechanism is not in the locked state at the time of internal combustion engine activation. A control valve spool is operable to a phase control position in which the supply/discharge of a fluid to/from an advance port and a retard port is controlled while the fluid is supplied to a lock releasing port, and to a lock transition position in which the supply/discharge of the fluid to/from the advance port and the retard port is controlled while the fluid is discharged from the lock releasing port. A communication path through which a portion of the fluid from a pump port is discharged to a drain port when the spool is operated to the lock transition position is formed.