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:
Jun. 29, 2004
Filed:
Sep. 06, 2001
Applicant:
Inventors:
Rolf Hartnagel, Esslingen, DE;
Wolfgang Pfister, Esslingen, DE;
Thomas Görtler, Weissenhorn, DE;
Assignee:
J. Eberspächer GmbH & Co. KG, Esslingen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 4/900 ;
U.S. Cl.
CPC ...
F04B 4/900 ;
Abstract
A fuel metering pump ( ) has a solenoid coil ( ), an armature ( ), a delivery piston ( ) and spring-loaded valves. The spring-loaded valves are embodied as an electrically controlled suction valve ( ) and an electrically controlled pressure valve ( ). A solenoid coil ( ) is provided for the armature ( ) of the delivery piston ( ), the armature ( ) of the suction valve ( ) and the armature of the pressure valve ( ). The masses, springs and hydraulic cross-sections of the component parts are configured in such a way that the valves switch more quickly than the delivery piston moves.