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:
May. 01, 2007
Filed:
Apr. 26, 2005
Yoshiaki Douyama, Shiroishi, JP;
Kerry E. Grifka, Ubly, MI (US);
Kevin L. Israelson, Cass City, MI (US);
Ronald H. Roche, Cass City, MI (US);
Edward J. Talaski, Caro, MI (US);
Yoshiaki Douyama, Shiroishi, JP;
Kerry E. Grifka, Ubly, MI (US);
Kevin L. Israelson, Cass City, MI (US);
Ronald H. Roche, Cass City, MI (US);
Edward J. Talaski, Caro, MI (US);
Walbro Engine Management, L.L.C., Tucson, AZ (US);
Abstract
A low cost bypass pressure regulator preferably for a returnless fuel system supplying liquid fuel to a fuel injector of the combustion engine. The pressure regulator preferably has a valve head disposed at least in part in a valve chamber defined by a circumferentially continuous inner surface carried by a valve body and which transitions radially outward with respect to a center axis and in a downstream direction. The valve head preferably tapers radially inward from a downstream peripheral outer edge of the head. In a closed position, the valve head engages a seat carried by the body with the peripheral outer edge downstream of the seat and radially spaced from and fitted closely to the valve chamber continuous inner surface thus defining a close fit region therebetween. As the valve head opens, the flow cross-section enlarges which reduces or eliminates oscillation of the valve head.