Title:
FLUID CONTROLLER
Document Type and Number:
WIPO Patent Application WO/2001/048406
Kind Code:
A1
Abstract:
A flow controller (1), comprising a valve body (4) having flow paths forming an inlet and an outlet of fluid, a diaphragm (6) held fixedly between the valve body and a bonnet (5), and an operating mechanism (7) moving the diaphragm vertically, wherein the valve body flow paths communicate with each other through a projection-free communication path (8), the diaphragm is formed so that, when lowering, it comes into close contact with the communication path so that it closes the flow path and, when rising, the center part thereof is recessed so that an area near the outer peripheral part is raised, and a curved surface (52), to which the outer upper surface (63) of the raised part is closely fitted, is formed on a bonnet on the inner lower surface of a diaphragm holding part (51).
Inventors:
SATOU JYUNJI (JP)
AKAMOTO HISATOSHI (JP)
IWATA MAKOTO (JP)
AKAMOTO HISATOSHI (JP)
IWATA MAKOTO (JP)
Application Number:
PCT/JP1999/007314
Publication Date:
July 05, 2001
Filing Date:
December 24, 1999
Export Citation:
Assignee:
FUJIKIN KK (JP)
SATO JYUNJI (JP)
AKAMOTO HISATOSHI (JP)
IWATA MAKOTO (JP)
SATO JYUNJI (JP)
AKAMOTO HISATOSHI (JP)
IWATA MAKOTO (JP)
International Classes:
F16K7/12; (IPC1-7): F16K7/12
Foreign References:
| JPS3816681B1 | ||||
| JPH01320378A | 1989-12-26 | |||
| JPH05272648A | 1993-10-19 | |||
| JPH07139650A | 1995-05-30 |
Attorney, Agent or Firm:
Kiyohara, Yoshihiro (Dojima 2-chome Kita-ku Osaka-shi Osaka, JP)
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