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. 22, 2003
Filed:
Mar. 21, 2001
Applicant:
Inventors:
Assignee:
Nissan Motor Co., Ltd., Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 3/700 ;
U.S. Cl.
CPC ...
F16K 3/700 ;
Abstract
An engine valve ( ) such as an intake valve or exhaust valve is driven to open or close a corresponding intake or exhaust port by attracting an armature ( ) onto one of first and second electromagnets ( ) and a position of the armature, viz., the position of the engine valve is measured by a permanent magnet ( ) and a Hall effect device ( ). An adhesive layer ( ) whose hardness is lower than the drive axle ( ) is used to attach the permanent magnet ( ) onto the drive axle ( ).