Rate-of-flow control valve
US5671774A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1996 |
| Grant date | Sep 30, 1997 |
| Priority date | — |
| Expiry date | Jun 18, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7762
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A rate-of-flow control valve assembly actuable as a function of velocity of fluid in a conduit includes a sensing plate projecting into the conduit, substantially perpendicular to a direction of flow in the conduit and a sleeve valve located downstream of the sensing plate. The sleeve valve includes a substantially cylindrical, flexible rubber sleeve surrounded by a control chamber, and an outer rigid sleeve, the flexible sleeve adapted to vary the flow rate of the fluid through the sleeve valve. Also included is a spool valve controller operatively connected to the sensing plate and in communication with the control chamber in the sleeve valve, the spool valve operable to control the flow of fluid into and out of the control chamber as a function of movement of the sensing plate in the conduit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.