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. 12, 2002
Filed:
May. 01, 2000
Applicant:
Inventors:
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01L 9/04 ;
U.S. Cl.
CPC ...
F01L 9/04 ;
Abstract
An electromagnetic drive valve always maintains an optimal waveform of a current supplied to electromagnets for driving an armature. The waveform of an instruction current to each coil is changed in accordance with changes of external disturbances affecting a valve body based on the pressure in the cylinders of an internal combustion engine, the sliding resistance on a bearing, and the like.
Yoeda, Keiji. (2002). Electromagnetic drive valve and method for controlling same (U.S. Patent No. 6354563). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6354563
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile