Fuel line check valve

Details Fuel line check valve Fuel line check valve

2007-12-12

2008-11-04

Cronin, Stephen K. (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel injection system

C123S516000

Reexamination Certificate

active

07444990

ABSTRACT:
A check valve includes a body defining a passageway through which fuel flows in a first fuel-flow direction during pump operation. The check valve also includes a seat, a seal member, and a biasing member biasing the seal member toward the seat. The seal member is movable between a first seated position in which the seal member is engaged with the seat and the pressure in the fuel rail is substantially equal to the operating pressure, and a second seated position in which the seal member is engaged with the seat and a residual pressure in the fuel rail is substantially less than the operating pressure. The seal member and the seat define a leak path between the fuel pump and the fuel rail permitting fuel to flow in a second fuel-flow direction opposite the first fuel-flow direction when the seal member is in the second seated position.

REFERENCES:
patent: 1693355 (1928-11-01), Thompson
patent: 3387623 (1968-06-01), Essig
patent: 3683957 (1972-08-01), Sands
patent: 3746263 (1973-07-01), Reeder et al.
patent: 4171712 (1979-10-01), DeForrest
patent: 4186768 (1980-02-01), Kuester
patent: 4274380 (1981-06-01), de Vulpillieres
patent: 4300357 (1981-11-01), Jacyno
patent: 4524800 (1985-06-01), Holland
patent: 4781213 (1988-11-01), Kilayko
patent: 4890640 (1990-01-01), King, Sr.
patent: 4972869 (1990-11-01), Takasaki
patent: 5036823 (1991-08-01), MacKinnon
patent: 5074272 (1991-12-01), Bostick et al.
patent: 5191867 (1993-03-01), Glassey
patent: 5339785 (1994-08-01), Wilksch
patent: 5361742 (1994-11-01), Briggs et al.
patent: 5477829 (1995-12-01), Hassinger et al.
patent: 5511528 (1996-04-01), Iwanaga et al.
patent: 5526795 (1996-06-01), Thompson et al.
patent: 5655892 (1997-08-01), Cherniawski et al.
patent: 5823169 (1998-10-01), Strohl et al.
patent: 5843212 (1998-12-01), Nanaji
patent: 5988211 (1999-11-01), Cornell
patent: 6047686 (2000-04-01), Bohringer et al.
patent: 6058912 (2000-05-01), Rembold et al.
patent: 6073487 (2000-06-01), Dawson
patent: 6530364 (2003-03-01), Romanek
patent: 6772739 (2004-08-01), Veinotte et al.
patent: 6772741 (2004-08-01), Pittel et al.
patent: 6837219 (2005-01-01), York et al.
patent: 6953027 (2005-10-01), Veinotte
patent: 6988488 (2006-01-01), Pursifull et al.
patent: 7011077 (2006-03-01), Veinotte
patent: 7066152 (2006-06-01), Stroia et al.
patent: 7069915 (2006-07-01), Brandenburg et al.
patent: 7225796 (2007-06-01), Reddy et al.
patent: 7246607 (2007-07-01), Burke et al.
patent: 2004/0250795 (2004-12-01), Stroia et al.
patent: 2006/0260587 (2006-11-01), Woody
patent: 2007/0006849 (2007-01-01), Mashiki

Affiliated with

Also associated with

Rating

Fuel line check valve does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fuel line check valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fuel line check valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4025809