Hydraulic pump motor

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 12104569
APP PUB NO 20220275792A1
SERIAL NO

17631987

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A hydraulic pump motor includes: a cylinder block; a plurality of cylinder bores; a port block and a valve plate, the valve plate being provided with a high pressure port and a low pressure port, the port block being provided with a discharge oil passage and a suction oil passage, a piston disposed in each cylinder bore, and oil flowing through the discharge oil passage and the suction oil passage. Further, the valve plate is provided with a reproduction port at a bottom dead center side position, the port block is internally provided with a reproduction oil passage, and the reproduction oil passage passes through a first region on a side of the high pressure port of the virtual plane and passes through a second region on a side of the low pressure port of the virtual plane in the port block.

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Patent Owner(s)

Patent OwnerAddress
KOMATSU LTD2-3-6 AKASAKA MINATO-KU TOKYO 1078414 ?1078414

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Okubo, Naohiro Tokyo, JP 1 0
Usami, Hideaki Tokyo, JP 4 21

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