Valve mechanism and control
US6474623B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Jul 31, 2001 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Jul 31, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K1/2014
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve assembly has a valve body in which an inlet port is formed. A valve seat, penetrated by an elliptical opening, is secured in the valve body to provide an outlet port. The inlet port communicates with an inlet chamber, and the outlet port communicates with an outlet chamber. An untethered valve disc is pivotally movable with respect to the valve seat intermediate the inlet and the outlet chambers to control opening and closing of the elliptical opening through the valve seat. A motor and a control rod are utilized selectively to effect pivotal movement of the valve disc to open the valve for fluid flow and to permit closure of the valve when fluid flow is to be discontinued. The motor incorporates a diaphragm to move a piston that, in turn, axially translates the control rod in response to the pressure in a chamber bounded, at least in part, by the diaphragm. The control rod operatively engages the valve disc such that axial translation of the rod allows the valve disc to pivot in response to the pressure applied against the valve disc by the pressurized fluid in the inlet chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.