Title:
BELLOWS PUMP
Document Type and Number:
WIPO Patent Application WO/2024/053158
Kind Code:
A1
Abstract:
Check valves 15, 16 of a bellows pump 10 each have a cylindrical valve case 15a, 16a in which a male thread 15e, 16e to be screwed into a female thread hole 111, 112 of a pump head 11 is formed on an end section 15d, 16d located on one side in the axial direction. The bellows pump 10 is equipped with engaging grooves 113, 114 which are respectively provided in a floor surface 111a, 112a of the female thread hole 111, 112 of the pump head 11, and engaging parts 151, 161 which respectively engage the inner-circumferential surface 113a, 114a of the engaging grooves 113, 114 and are provided to the end sections 15d, 16d of the valve cases 15a, 16a.
Inventors:
URATA DAISUKE (JP)
KINOSHITA ATSUFUMI (JP)
KINOSHITA ATSUFUMI (JP)
Application Number:
PCT/JP2023/017054
Publication Date:
March 14, 2024
Filing Date:
May 01, 2023
Export Citation:
Assignee:
NIPPON PILLAR PACKING (JP)
International Classes:
F04B43/08; F04B53/10; F16K27/00
Foreign References:
| JP2012122380A | 2012-06-28 | |||
| JP2004084486A | 2004-03-18 | |||
| JP2001153052A | 2001-06-05 |
Attorney, Agent or Firm:
SUNCREST PATENT AND TRADEMARK ATTORNEYS (JP)
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