Exhaust flow control valve
US5630571A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1995 |
| Grant date | May 20, 1997 |
| Priority date | — |
| Expiry date | Oct 16, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K1/2268
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An exhaust flow control valve operable over high temperature ranges, comprising: a cylindrical flow housing having a cylinder axis and defining a flow passage; a valve plate pivotably mounted within the cylindrical flow housing, wherein the valve plate has a first facing surface, a second facing surface and a perimeter surface and wherein the valve plate has a pivot axis perpendicular to cylinder axis; a first seat extending radially inward from a first approximate 180 degree portion of an inner perimeter of the cylindrical flow housing, wherein the first seat forms a first partial annular surface having a substantially constant width in a radial direction over an entire arcuate length of the first seat and wherein the first seat faces a first direction parallel to the cylinder axis; a second seat extending radially inward from a second approximate 180 degree portion of the inner perimeter of the cylindrical flow housing, wherein the second seat forms a second partial annular surface having a substantially constant width in a radial direction over an entire arcuate length of the second seat, wherein the second seat faces in a second direction opposite the first direction, wherein t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.