Cylinder block and swash plate type liquid-pressure rotating apparatus including same
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United States of America Patent
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Oct 6, 2020
Grant Date -
Aug 29, 2019
app pub date -
Nov 9, 2017
filing date -
Nov 10, 2016
priority date (Note) -
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Abstract
A cylinder block includes: a plurality of cylinder bores including respective openings formed on a piston insertion end surface of the cylinder block, pistons being inserted in the respective cylinder bores and being configured to reciprocate and slide in the respective cylinder bores when the cylinder block rotates; and a cooling portion, wherein the cooling portion includes a plurality of cooling holes each formed between the adjacent cylinder bores and extending from the piston insertion end surface in an axial direction of the cylinder block.
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