Title:
RECIPROCATION PUMP
Document Type and Number:
Japanese Patent JP2023181711
Kind Code:
A
Abstract:
To provide a reciprocation pump capable of compatibly securing a water absorption flow path area and securing an appropriate bolt diameter.SOLUTION: A piston metal fitting 16 having a piston packing 17 for slide-contacting with a cylinder 2 provided on its outer periphery side is fixed to a piston body 4 on its rear side with a fixing bolt 21 provided on its rear end face, while a water absorption flow path 28 is passed thought the interior of the piston metal fitting 16 at a front side further than the fixing bolt 21 for absorbing a use liquid. In this construction, the fixing bolt 21 for the piston metal filling 16 and the water absorption flow path 28 are not arranged in parallel to each other in a radial direction.SELECTED DRAWING: Figure 2
Inventors:
AOYAMA RYOHEI
Application Number:
JP2022094990A
Publication Date:
December 25, 2023
Filing Date:
June 13, 2022
Export Citation:
Assignee:
MARUYAMA MFG CO
International Classes:
F04B53/10; F04B53/12
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshiki Kuroki
Taema Taema
Yoshiki Kuroki
Taema Taema