Flow-limiting device for a pipe carrying a fluid or gaseous medium
US4141380A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 29, 1976 |
| Grant date | Feb 27, 1979 |
| Priority date | — |
| Expiry date | Nov 29, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7875
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A flow-limiting device for a pipe carrying a fluid or gaseous medium, comprising a flap, means mounting the flap in the pipe for pivotal movement in a manner to vary the cross-sectional area of flow through the pipe, and spring means urging the flap in a direction to increase the cross-sectional area of flow and against the direction of flow through the pipe, so that the flap varies the cross-sectional area of flow through the pipe in dependence on the kinetic energy differential of the medium upstream and downstream of the flap. The spring means comprise a leaf spring one end of which is mounted in an upper part of a housing for insertion in the pipe and the other end of which carries the flap. There is a clearance beneath the lower edge of the flap to permit the passage of deposits in the medium past the flap in all positions thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.