Offset butterfly valve
US6283448A · kind A · utility
Inventors
Key dates
| Filing date | Apr 19, 2000 |
| Grant date | Sep 4, 2001 |
| Priority date | — |
| Expiry date | Apr 19, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K1/22
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An offset butterfly valve with a valve body, air flow conduit extending there through, and an offset rotatably mounted valve plate. The air flow conduit has with no interruptions to impede air flow there through. Cross sections along any location of the conduit are essentially round and of equal diameter while the valve plate is the shape of an oblique cross section of the conduit and rotatably mounted therein. The valve plate axis of rotation is offset with respect to the center of the valve plate and further offset with respect to a center of the conduit. Rotation of the valve plate within the conduit is accomplished by providing two opposing indentations on the interior of the conduit which accommodate the maximum diameter dimension of the valve plate when the valve plate is rotated to an open position. The indentations do not interrupt air flow through the conduit or the sealing of the valve plate periphery which may be easily machined to seal with a sealing surface of the interior of the conduit. A valve plate shaft may be contained within the valve body or may be accesses by removable side mount blocks. Various activation, biasing, or latching mechanisms may be included on th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.