Flexible hose passive shut down system
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United States of America Patent
Stats
-
Feb 4, 2003
Grant Date -
N/A
app pub date -
Aug 20, 2001
filing date -
Aug 20, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The flexible hose assembly 10 interconnects a portable tank and another tank for transmitting hazardous fluids. A back check housing 34 contains a valve member 56 and a seating surface 58 for closing off flow through the back check housing. A flexible hose 16 extends downstream from the back check housing, and a flexible sensing line 26 extends within the flexible hose downstream from the back check housing for transmitting fluid pressure to a piston 36. The piston 36 is axially movable between a locked and unlocked position, and when in a locked position maintains the valve member in the open flow position and when in the unlocked position allows the valve member to move to the closed position. A biasing member is provided for biasing at least one of the piston and valve members to the unlocked position.
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