Pressure control valve

Details Pressure control valve Pressure control valve

2006-02-07

2006-02-07

Bastianelli, John (Department: 3751)

Valves and valve actuation

Electrically actuated valve

Including solenoid

C251S129080, C251S337000

Reexamination Certificate

active

06994313

ABSTRACT:
A pressure control valve includes a shaft hole formed through a wall surrounding a pressure detecting chamber of a body, the shaft hole being provided with a valve port, a communication shaft inserted through the shaft hole and having an end protruding from the valve port and provided with a valve element, a biasing unit, a branch hole, a sealing member, a pressure sensing cylindrical member, a diaphragm mounted on the open end of the pressure sensing cylindrical member, a terminal wall formed on the body so as to be opposed to the diaphragm, and a stretching member stretched between the diaphragm and the terminal wall, the stretching member being subjected to a spring force the diaphragm receives when the fluid pressure is in the pressure detecting chamber is lower than the predetermined reference pressure, thereby moving the valve element to the opening side.

REFERENCES:
patent: 5615860 (1997-04-01), Brehm et al.
patent: 5868167 (1999-02-01), Miki et al.
patent: 6527249 (2003-03-01), Niimi et al.
patent: 6607176 (2003-08-01), Mayr et al.
patent: 6619615 (2003-09-01), Mayr et al.
patent: 06-299958 (1994-10-01), None
patent: 07-43543 (1995-10-01), None
patent: 2001-153256 (2001-06-01), None
patent: 2001-311477 (2001-11-01), None

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