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. 28, 1999
Filed:
Jul. 01, 1998
Timothy B Brandt, West Des Moines, IA (US);
Allen L Hudson, West Des Moines, IA (US);
Parr Manufacturing, Inc., Des Moines, IA (US);
Abstract
A fuel pressure regulator wherein the diaphragm is eliminated from the crimp securing the first and second portions of the regulator housing together, thus minimizing the strain on the diaphragm thereby extending the life of the diaphragm and the pressure regulator. The diaphragm has an annular flange that is disposed within an annular area defined by an annular interior periphery of the second housing portion and an annular exterior periphery of an end plate retained between first and second housing portions of the regulator. The diaphragm is thereby axially and radially restrained between the first and second housing portions without being clamped between the first and second housing portions thereby increasing the life expectancy of the diaphragm. The fuel pressure regulator further utilizes a valve member having an annular sealing surface. This annular sealing surface is spring biased against the diaphragm and enables a higher unit pressure at the seat thereby improving the sealing characteristics between the upstream portion of the regulator and the downstream portion of the regulator. The fuel flow through the regulator is controlled by a control spring opposingly biasing the diaphragm against the sealing surface of the valve member.