Inlet valve assembly
US5983927A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1998 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Feb 3, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/792
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention proposes an inlet valve assembly integrated in apparatus for dispensing a fluid contained in a tank, the valve assembly serving to isolate said tank at least during a dispensing stage during which said fluid is dispensed, said valve assembly comprising a valve member (2) having a contact zone coming into sealed contact with a substantially frustoconical valve seat (16) at least during said dispensing stage, the contact zone of the valve member (2) being part of a substantially frustoconical surface (210), said inlet valve assembly being characterized in that the solid angle of the surface (210) is greater than that defined by the valve seat (16) so that the contact zone is at least initially defined by a circle when the valve member is at rest, and in that the frustoconical surface (210) is formed by a substantially flexible wall, so that the initially circular contact zone extends to form a truncated cone by resilient deformation during the dispensing stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.