Title:
ROTARY SWASH PLATE-TYPE HYDRAULIC PUMP
Document Type and Number:
WIPO Patent Application WO/2023/189943
Kind Code:
A1
Abstract:
A rotary swash plate-type hydraulic pump comprising: a casing; a cylinder block that includes a cylinder bore and is arranged within the casing so as to be incapable of rotating relative to the casing; a piston inserted in the cylinder bore; a rotary swash plate that is accommodated within the casing so as to be capable of rotating around an axis and causes the piston to move in a reciprocating manner; and a variable displacement mechanism for changing the effective stroke length of the piston, wherein the variable displacement mechanism includes a spool that changes the effective stroke length of the piston by adjusting the opening and closing of the corresponding cylinder bore, and the cylinder block includes a spool hole into which the spool is inserted.
Inventors:
NISHIDA SHINJI
YOSHIMURA ISAMU
TAKAO SATORU
YOSHIMURA ISAMU
TAKAO SATORU
Application Number:
PCT/JP2023/011233
Publication Date:
October 05, 2023
Filing Date:
March 22, 2023
Export Citation:
Assignee:
KAWASAKI HEAVY IND LTD (JP)
International Classes:
F04B53/16; F04B1/143
Domestic Patent References:
| WO2012066593A1 | 2012-05-24 |
Foreign References:
| JPS4521857B1 | ||||
| JPH06213151A | 1994-08-02 | |||
| US20140328701A1 | 2014-11-06 |
Attorney, Agent or Firm:
ISHIDA, Shoji (JP)
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