Title:
ロータリーバルブ用アクチエータ
Document Type and Number:
Japanese Patent JP4046148
Kind Code:
B2
Abstract:
A rotary valve actuator and linkage provide an actuator having a tubular housing with end caps and a piston that is moved by fluid pressure against a compression spring. A rolling diaphragm is used to bias the piston. A pair of ports are provided on opposite sides of the housing and a linkage having two arms is interconnected with the piston through the ports. The linkage is coupled to a rotary valve shaft and linear movement of the piston causes rotational movement of the shaft. The linkage includes two separate arms and a centerpiece. The arms and the centerpiece interengage each other at angled surfaces that force the centerpiece and the arms into radial engagement with the shaft when axial compression is provided to the arms and centerpiece to force them toward each other.
Inventors:
Bowman, Hans, Dee.
Application Number:
JP53712397A
Publication Date:
February 13, 2008
Filing Date:
April 01, 1997
Export Citation:
Assignee:
Fisher Controls International Limited Liability Company
International Classes:
F16K31/163; F15B15/06; F15B15/08; F16D1/091; F16D1/095; F16D1/096; F16K31/122; F16K31/44; F16K31/528
Domestic Patent References:
| JP52040278A | ||||
| JP56101408A | ||||
| JP48036205B1 | ||||
| JP497955Y2 | ||||
| JP54127031A | ||||
| JP55057706A |
Foreign References:
| US4187764 | ||||
| US3985151 |
Attorney, Agent or Firm:
Yoshihiro Tsunoda