Low spill high flow quick coupling valve assembly
US6161578A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 1999 |
| Grant date | Dec 19, 2000 |
| Priority date | — |
| Expiry date | Jan 8, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87957
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A high flow low spill quick coupling valve assembly is used to connect to pressurized, large diameter fluid lines. The valve assembly includes a female coupling and a male coupling, each of which defines a fluid passageway. The female coupling fluid passageway is normally closed by a female coupling valve. The female coupling valve is normally biased into a close position by a female coupling spring which is isolated from the female coupling fluid passageway. The male coupling fluid passageway is normally closed by a male coupling valve. The male coupling valve is normally biased into a close position by a male coupling spring which is isolated from the male coupling fluid passageway. Both male and female coupling valves are fluid pressure balanced to minimize the connecting force and opening force. The male coupling is inserted into the female coupling and is engaged with the female coupling to open the fluid passageways. A vent conduit vents the internal air pressure between inside and outside of the coupling valve assembly. The fluid spillage or leakage is minimized. The male coupling further includes an insert seat which forms an internal groove. All spring members in the valve…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.