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:
Jan. 31, 1995
Filed:
Oct. 21, 1993
Atsushi Ueda, Higashimatsuyama, JP;
Zexel Corporation, Tokyo, JP;
Abstract
A fuel injector has a solenoid valve which is opened and closed for spilling off pressurized fuel from a fuel pressure chamber in order to control fuel injection. The solenoid valve is provided with a valve rod that has one end connected with an armature, is formed with a valve head tapered to increase in diameter with increasing distance from the armature and is guided by a guide hole for reciprocal motion, with a fuel reservoir formed to surround the valve head and communicate with the chamber housing the armature, and with a tapered portion for seating the largest diameter portion of the valve head and being formed in the wall of the fuel reservoir to decrease in diameter in the direction of the armature. When the pressurized fuel is spilled to the armature chamber as a low pressure portion, it exerts a force on the valve rod in the direction of valve opening, thereby enabling the valve movement to be completed rapidly.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile