Hydraulic line adjustable velocity fuse with damping
US6443180B1 · kind B1 · utility
24Cited by
8References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2001 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Mar 15, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7785
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A velocity fuse for a hydraulic line shuts off fluid flow when the flow rate exceeds a preset flow value. The shut off value may be adjusted while the fuse is mounted in the hydraulic circuit. A damping mechanism of the dash pot type prevents the fuse from responding to flow surges of short duration. A poppet or piston within a tubular housing reciprocates between an open position held by a spring and a closed position when flow through an adjustable aperture causes a great enough pressure drop to overcome the spring bias. The damping mechanism is unaffected by the flow rate setting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.