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:
Mar. 07, 2000
Filed:
Jun. 05, 1998
Yoichiro Yamagishi, Atsugi, JP;
Satoru Watanabe, Atsugi, JP;
Unisia Jecs Corporation, Atsugi, JP;
Abstract
In a hydraulic type variable valve timing structure having a construction for changing a phase of a cam shaft by controlling the current provided to a linear solenoid valve, and a change of said rotational phase corresponding to the increase of said current is limited by a stopper, a maximum current is provided for a predetermined time to the linear solenoid valve when a target value of the rotational phase is switched to the rotational phase being limited by the stopper, and thereafter, the current is lowered and maintained in the range where the rotational phase being limited by the stopper can be maintained.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile