Spill valve
US5165444A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1991 |
| Grant date | Nov 24, 1992 |
| Priority date | — |
| Expiry date | Sep 26, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7738
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The spill valve includes an annular seat surrounding a circular port in the top of a tank containing liquid under pressure and a circular poppet valve member movable between open and closed positions relative to the seat. A plate overlies the valve member and extends laterally therebeyond and is integral around its periphery with a depending skirt which overlaps the seat around its perimeter and is spaced a slight lateral clearance distance therefrom for cooperation therewith and with the valve member to define an annular chamber when the valve is closed, the extension plate effectively increasing the valve member area against which the internal tank pressure is exerted when the valve member moves from its closed position. The valve is biased closed by a plurality of free weights which sit atop the extension plate. Opening movement of the valve is stopped by a stop plate which is spaced above the valve seat by support rods which extend through complementary openings in the extension plate such that the distance between the closed and fully open positions of the valve is more than one-half the diameter of the port. A handle is fixed to the valve member and extends outwardly therefro…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.