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. 11, 2005
Filed:
Oct. 09, 2002
Dequan Yu, Ann Arbor, MI (US);
Stephen T. Kempfer, Canton, MI (US);
Christopher C. Lobombarbe, Ypsilanti, MI (US);
David J. Rink, Ann Arbor, MI (US);
David M. Dokas, Ann Arbor, MI (US);
Paul E. Fisher, Dexter, MI (US);
Jeff Moll, Whitmore Lake, MI (US);
DeQuan Yu, Ann Arbor, MI (US);
Stephen T. Kempfer, Canton, MI (US);
Christopher C. Lobombarbe, Ypsilanti, MI (US);
David J. Rink, Ann Arbor, MI (US);
David M. Dokas, Ann Arbor, MI (US);
Paul E. Fisher, Dexter, MI (US);
Jeff Moll, Whitmore Lake, MI (US);
Visteon Global Technologies, Inc., Van Buren Township, MI (US);
Abstract
A low deviation pressure relief valve for a fuel pump consisting of a housing having an elongated bore having a continuous wall, an axis, shoulders arranged on the wall so as to extend toward the axis. A ball in the housing has a diameter at least less than the diameter of the bore and a ball retainer located in the bore upstream from the shoulders forms a ball seat by pre-coining process. The ball is smaller than the retainer seat in diameter to ensure an edge seal with the ball. A spring coaxial with the axis located down stream from the ball retainer and supported on the shoulders, and the ball is located between the spring and the ball seat wherein low flow restriction is created and reduced pressure variation is created as fluid flows past the ball and less buckling in the spring is created by guide ribs.