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. 16, 1991
Filed:
Feb. 14, 1990
Hans-Jurgen Schafer, Braunschweig, DE;
Volkswagen AG, Wolfsburg, DE;
Abstract
A fluid metering valve includes a housing; a nozzle opening; a spring diaphragm supported in the housing and hermetically dividing the inner space of the housing into a first chamber and a second chamber; an inlet provided in the housing for introducing pressurized fluid solely into the second chamber; and a valve needle slidably accommodated in the second chamber and having a closed position in which the valve needle maintains the nozzle opening closed and an open position in which the valve needle maintains the nozzle opening open. The valve needle is connected to the spring diaphragm and is resiliently urged by the spring diaphragm into the closed position. The metering valve further has a valve actuating member disposed in the first chamber and having an energized state and a de-energized state. The valve actuating member is connected to the valve needle for moving the valve needle into the open position against a force of the spring diaphragm when the valve actuating member is energized.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile