Leakproof dual action fluid transfer valve
US5546986A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1995 |
| Grant date | Aug 20, 1996 |
| Priority date | — |
| Expiry date | Feb 7, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/88062
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A leakproof dual action valve which is operated by its relative state of engagement and disengagement to a complementary, mating spring-actuated valve connected to a fluid supply. The dual action valve has a sleeve member, a piston carrier portion, a piston body, and a valve. As the sleeve member of the dual action valve is screwed onto the mating spring actuated valve, the piston body simultaneously pushes open both the dual action valve and the spring actuated valve. When the sleeve member is unscrewed from the mating spring actuated valve, both valves close, thereby preventing and leakage of fluid. The dual action valve is adapted to connect to a vacuum hose, which will evacuate any fluid from the fluid supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.