Fluid handling – Processes – Involving pressure control
Reexamination Certificate
2006-05-30
2006-05-30
Jacyna, J. Casimer (Department: 3751)
Fluid handling
Processes
Involving pressure control
C251S282000
Reexamination Certificate
active
07051746
ABSTRACT:
A valve assembly is disclosed that provides for complete or partial fluid pressure balancing across the valve, and can be used for reducing valve actuation forces in order to employ electric actuation. The valve assembly includes a valve housing having a valve chamber, a flow passageway, and a piston chamber. A valve member is disposed in the valve housing and is movable along a valve axis. The valve member is subjected to a first pressure, which urges the valve in a first direction. To counteract this force, a piston integral with the valve member is slidably arranged in the piston chamber. One side of the piston is subjected to this first pressure to provide a counterbalancing force. A pressure passage fluid communication of the first pressure between the flow passageway and said one side of the piston.
REFERENCES:
patent: 2758812 (1956-08-01), Marcy et al.
patent: 2897836 (1959-08-01), Peters et al.
patent: 3318577 (1967-05-01), Banks
patent: 4341370 (1982-07-01), Banks
patent: 5086808 (1992-02-01), Pettus
patent: 5386965 (1995-02-01), Marchal
patent: 1084537 (1960-06-01), None
Drawing depicting Inventor's general understanding or representation of the present state of the art prior to the invention; this drawing appeared in the papers filed in the corresponding provisional application.
Jacyna J. Casimer
Reinhart Boerner Van Deuren P.C.
Woodward Governor Company
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