Flexible hose passive shut down system
US6513556B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2001 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | Aug 22, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7931
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.