Shutoff-opening device
US5988217A · kind A · utility
35Cited by
5References
6Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Nov 18, 1997 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Nov 18, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/88054
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve body has a main body formed with an inflow channel for a first fluid, an inflow channel for a second fluid, and an outflow channel for the first and second fluids in common. The first fluid inflow channel is always in communication with the common outflow channel through a valve chamber. A valve element operates to bring the second fluid inflow channel into or out of communication with the first fluid inflow channel and the common outflow channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.