Title:
BELLOWS PUMP
Document Type and Number:
WIPO Patent Application WO/2012/132816
Kind Code:
A1
Abstract:
Disclosed is a bellows pump which is provided with a case member that forms an axial space therein, closed-bottomed cylindrical bellows that are arranged in the space in an axially extendable/contractable manner and axially separate the space into a pump chamber and an operation chamber, suction valves that are provided on a suction side of the pump chamber and guide a transfer fluid to the pump chamber, and discharge valves that are provided on a discharge side of the pump chamber and discharge the transfer fluid from the pump chamber, and which extends/contracts the bellows by introducing an operation fluid into the operation chamber to discharge the operation fluid from the operation chamber, wherein each of the bellows is configured by alternately forming mountain portions and valley portions along the axial direction and having, on a predetermined position in the axial direction, an annular ring portion integrally formed therewith.
Inventors:
IWABUCHI KYOUHEI (JP)
TANABE HIROYUKI (JP)
ONIDUKA TOSHIKI (JP)
YOSHIDA ATSUSHI (JP)
TANABE HIROYUKI (JP)
ONIDUKA TOSHIKI (JP)
YOSHIDA ATSUSHI (JP)
Application Number:
PCT/JP2012/055955
Publication Date:
October 04, 2012
Filing Date:
March 08, 2012
Export Citation:
Assignee:
IWAKI CO LTD (JP)
IWABUCHI KYOUHEI (JP)
TANABE HIROYUKI (JP)
ONIDUKA TOSHIKI (JP)
YOSHIDA ATSUSHI (JP)
IWABUCHI KYOUHEI (JP)
TANABE HIROYUKI (JP)
ONIDUKA TOSHIKI (JP)
YOSHIDA ATSUSHI (JP)
International Classes:
F04B43/10
Foreign References:
| JP2001193837A | 2001-07-17 | |||
| JPS63188372U | 1988-12-02 | |||
| JPH02132130U | 1990-11-02 | |||
| DE102009011067A1 | 2010-09-02 | |||
| JP3138916U | 2008-01-24 | |||
| JP2001193836A | 2001-07-17 | |||
| JP2001193837A | 2001-07-17 |
Other References:
See also references of EP 2693053A4
Attorney, Agent or Firm:
ITAMI, MASARU (JP)
Itami 勝 (JP)
Itami 勝 (JP)
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Claims: