Title:
HYDRAULIC ROTARY MACHINE
Document Type and Number:
WIPO Patent Application WO/2019/035355
Kind Code:
A1
Abstract:
A piston pump (100, 200) comprises: a plurality of pistons (6); a cylinder block (2) having provided therein a plurality of cylinders (2a) coupled to a shaft (1) and housing the pistons (6); a shoe (10) rotatably coupled to the tip of the pistons (6); a swash plate (13) that reciprocally moves the pistons (6) in conjunction with the sliding contact of the shoe (10) and the rotation of the cylinder block (2); and a wave spring (30) that, as an impelling member that impels the shoe (10) towards the swash plate (13), has a wave-shaped belt material formed in a spiral.
Inventors:
ISHIKAWA RYUNOSUKE (JP)
OHBAYASHI YOSHIHIRO (JP)
OHBAYASHI YOSHIHIRO (JP)
Application Number:
PCT/JP2018/028699
Publication Date:
February 21, 2019
Filing Date:
July 31, 2018
Export Citation:
Assignee:
KYB CORP (JP)
International Classes:
F04B1/22; F03C1/253
Domestic Patent References:
| WO2011152025A1 | 2011-12-08 |
Foreign References:
| JPS5768569A | 1982-04-26 | |||
| JPH109132A | 1998-01-13 | |||
| JP2000213447A | 2000-08-02 |
Attorney, Agent or Firm:
GOTOH & PARTNERS (JP)
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