Title:
【発明の名称】蝶形弁
Document Type and Number:
Japanese Patent JP2596858
Kind Code:
B2
Abstract:
A butterfly valve (10) includes a duct (12) defining a fluid flow path (16) and a plate-like valve member (20) pivotal in the duct to in one position close the latter. The valve member (20) is pivotal to a second position spanning the duct and extending parallel to the flow path to allow fluid flow therein. Means (30, 82) are provided for altering the effective area distribution of the valve member (20) about its pivot axis (28) in order to effect pivotal movement of the valve member in response to fluid dynamic flow forces. An actuator (30) carried upon the valve member cooperates with the duct (12) to forcefully effect initial opening and final closing movements of the valve member.
Inventors:
Baru, Larry Kay.
Hines, Marcial You.
Miller, Terry El.
Hines, Marcial You.
Miller, Terry El.
Application Number:
JP50953590A
Publication Date:
April 02, 1997
Filing Date:
June 05, 1990
Export Citation:
Assignee:
Allied Signal Incorporated
International Classes:
F16K1/22; F16K1/226; F16K15/03; F16K27/02; (IPC1-7): F16K1/22
Attorney, Agent or Firm:
Toshio Takayama