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:
Dec. 19, 2000
Filed:
Sep. 17, 1999
Roman Press, Rochester, NY (US);
Impco Technologies, Inc., Cerritos, CA (US);
Abstract
A gaseous fuel injector for an internal combustion engine or a propulsion system using fuel cells has an electromagnetic solenoid with a flat rectangular armature which seats against a seat member to form a valve. The valve is kept in a closed position by the differential between the fuel pressure on one side and the atmospheric pressure or the ambient pressure in the discharge chamber on the other side with additional closing force being provided by a spring which abuts against the armature. With each pulsating actuation of the coil of the solenoid, the armature is driven away from its seat to open the valve formed thereby providing an injection of gas from the injector. The injector has a discharge nozzle which is integrally formed therewith. A centrally located aperture is formed in the armature which along with the side space afforded by the rectangular shape of the armature provides dual apertures for the flow of gas through the injector.