Fluid handling – Removable valve head and seat unit
Reexamination Certificate
2005-05-03
2005-05-03
Hepperle, Stephen M. (Department: 3753)
Fluid handling
Removable valve head and seat unit
C123S459000, C137S510000
Reexamination Certificate
active
06886590
ABSTRACT:
A pressure regulation assembly of a fuel supply includes a receptacle, an inlet connectable to the fuel supply and in fluid communication with the receptacle, an outlet in fluid communication with the receptacle, and a pressure regulator mounted in the receptacle to selectively open fluid communication between the inlet and the outlet. The receptacle includes a first surface surrounding an axis, and a second surface surrounding the axis and the first surface to provide a void between the first surface and the second surface. The pressure regulator extends into the void between the first surface of the receptacle and the second surface of the receptacle and includes a third surface surrounding the axis and a fourth surface surrounding the axis and the third surface. A first seal engages the first surface of the receptacle and the third surface of the pressure regulator. A second seal engages the second surface of the receptacle and the fourth surface of the pressure regulator.The pressure regulator can include a first housing member, a second housing member connected to the first housing member, and a closing member movably contained within the first housing member and the second housing member. The second housing member includes a continuous wall having a base, a recess in the base, an opening in the recess, and a seat adjacent the opening and surrounding the opening. The closing member is selectively engageable with the seat to fluidly seal the opening. The recess has a first surface surrounding an axis and an inner sealing portion on the first surface. The wall also includes a second surface surrounding the axis and the first surface and having an outer sealing portion.
REFERENCES:
patent: 4741360 (1988-05-01), Affeldt et al.
patent: 5458104 (1995-10-01), Tuckey
patent: 5785080 (1998-07-01), Herbst
patent: 5967120 (1999-10-01), Blanton et al.
patent: 6016831 (2000-01-01), Bueser et al.
patent: 6161574 (2000-12-01), Gerhard et al.
Robinson Barry S.
Wynn, Jr. James A.
Hepperle Stephen M.
Siemens VDO Automative Corporation
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