Vacuum demand flow valve
US6863083B2 · kind B2 · utility
5Cited by
63References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2003 |
| Grant date | Mar 8, 2005 |
| Priority date | — |
| Expiry date | Feb 26, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7836
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A valve is disclosed for dispensing a flowable material. The valve has a first chamber (40) at a first pressure wherein said first chamber (40) defines an outlet (28) in communication with said first chamber (40). A second chamber (42) is at a second pressure. The valve has a stop (18) indexed against a third pressure, operating to selectively place the first chamber (40) into communication with the second chamber (42). The stop (18) is operative to connect the second chamber (42) to said first chamber (40) when the first pressure is less than the third pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.