Title:
【発明の名称】バタフライバルブ
Document Type and Number:
Japanese Patent JP3379929
Kind Code:
B2
Abstract:
A butterfly valve includes a valve housing having a fluid conduit, a seal plate assembly including a seal plate, and a closure assembly. The closure assembly includes a main shaft mounted in the valve housing and rotatable about a longitudinal axis between an open position and an intermediate position, a crank shaft rotatable about the longitudinal axis between the open position and a closed position, a hub affixed to the main shaft and movably coupled to the seal plate assembly to permit translation of the seal plate assembly with respect to the hub, a roller engaging the seal plate assembly and mounted to the crank shaft for eccentric rotation about the longitudinal axis, and one or more springs coupled between the seal plate assembly and the hub for biasing the seal plate toward the intermediate position. The valve may include a valve actuator which rotates the crank shaft about the longitudinal axis between the open position and the closed position.
More Like This:
| JP6768427 | Double eccentric valve |
| JP3001262 | [Title of Invention] Valve device |
Inventors:
Christopher M. Keene
Application Number:
JP35212799A
Publication Date:
February 24, 2003
Filing Date:
December 10, 1999
Export Citation:
Assignee:
Varian Incorporated
International Classes:
F16K1/22; F16K1/24; F16K1/32; F16K1/48; F16K51/02; (IPC1-7): F16K1/24
Domestic Patent References:
| JP74532A | ||||
| JP10238637A | ||||
| JP60184463U | ||||
| JP643425U | ||||
| JP62503048A |
Other References:
【文献】米国特許3857545(US,A)
【文献】米国特許4669701(US,A)
【文献】米国特許4669701(US,A)
Attorney, Agent or Firm:
Kousaku Inaoka (2 outside)