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:
Jul. 06, 1999
Filed:
May. 21, 1997
Hideto Takeda, Kariya, JP;
Denso Corporation, Kariya, JP;
Abstract
An injection valve with an injection hole includes a yoke, a fixed core surrounded by the yoke, a non-magnetic stopper between the yoke and the fixed core, a valve for opening and closing the injection hole, a movable core, whose axial movement is limited by the stopper, and an electromagnetic coil for attracting (when energized) the movable core to the fixed core. The movable core contacts the stopper and an air gap is formed between a surface of the movable core and at least one of the yoke and the fixed core. Since the movement of the movable core is limited by the stopper, the amount of movement by the movable core and the air gap formed between the surface of the movable core and at least one of the yoke and the fixed core are easily adjusted by adjusting the thickness of the stopper.