Relief valve device

Details Relief valve device Relief valve device

2004-11-11

2010-10-19

Rivell, John (Department: 3753)

Fluid handling

Destructible or deformable element controlled

Heat destructible or fusible

C137S079000, C220S089400

Reexamination Certificate

active

07814925

ABSTRACT:
Under emergency, a valve body displaced from a closed position to an open position in association with melting of a fuse member receives resultant of pressing forces of a primary pressure of gas guided through a primary port in an opening direction in a state where the valve body is disposed at the position closer to the open position including a fluid driving start position between the closed position and the open position. The valve body receives smaller resultant of the pressing forces of the primary pressure in the opening direction in a state where the valve body is disposed at the position closer to the closed position than to the fluid driving start position than the resultant of the pressing forces received by the valve body in the state where the valve body is disposed at the position closer to the open position including the fluid driving start position.

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International Search Report for PCT/JP2004/016730, dated Feb. 4, 2005.
Supplementary European Search Report for European Patent Application No. 04822391.1, dated Jun. 17, 2010.

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