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US 6,546,954 B2Granted
Flow control valve
AssigneeKyosan Denki Co., Ltd.
InventorsMasato Sato, Nobuharu Muto
Life of this patent
Estimating the term…
Abstract
A flow control valve with a reduced number of parts and with few restrictions on installation space is provided. A back pressure chamber of a diaphragm-type valve body communicates with a communication port through a vent hole formed in a case of the flow control valve. An air filter is integrated with the flow control valve.
Claims12
A flow control valve comprising:
- a diaphragm-type valve body;
- a valve port opened and closed by the valve body;
- a first port;
- a second port coming into communication with the first port when the valve body is opened;
- a box member connected to the first port and the second port;
- and
- an air filter accommodated in the box member and dividing the box member into a first chamber and a second chamber,
- wherein the first chamber and the second chamber communicate with the first port and the second port respectively, and a back pressure chamber of the valve body communicates with the first port through a vent hole formed in a case of the flow control valve.
5 more elements
A flow control valve comprising:
- a diaphragm-type valve body;
- a valve port opened and closed by the valve body;
- a first port;
- a second port coming into communication with the first port when the valve body is opened;
- a box member connected to the first port and the second port;
- and
- an air filter accommodated in the box member and dividing the box member into a first chamber and a second chamber, wherein
- the first chamber and the second chamber communicate with the first port and the second port respectively, and a back pressure chamber communicates with the second chamber through a vent hole formed in the case of the flow control valve.
5 more elements
A flow control valve comprising:
- a diaphragm-type valve body;
- a valve port opened and closed by the valve body;
- a first port;
- a second port coming into communication with the first port when the valve body is opened;
- a box member connected to the first port and the second port;
- and
- an air filter accommodated in the box member and dividing the box member into a first chamber and a second chamber, wherein a back pressure chamber of the valve body communicates with outside air through a vent hole formed in a case of the flow control valve.
4 more elements
Dependencies are inferred from the claim text.