Yoshimichi Akasaka

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Tsuchiura, JP

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Patents Grantslast 30 patents

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Bent axis type variable displacement hydraulic machine
- Patent number 5,231,912
- Issue date Aug 3, 1993
- Hitachi Construction Machinery Co., Ltd.
- Yoshimichi Akasaka
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Bent axis type variable displacement hydraulic machine
- Patent number 5,182,978
- Issue date Feb 2, 1993
- Hitachi Construction Machinery Co., Ltd.
- Yoshimichi Akasaka
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Bent axis type variable displacement hydraulic machine
- Patent number 5,094,144
- Issue date Mar 10, 1992
- Yoshimichi Akasaka
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Thrust hydrostatic bearing device for use in axial piston machine
- Patent number 4,788,902
- Issue date Dec 6, 1988
- Hitachi Ltd.
- Yoshimichi Akasaka
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Direct drive type servo valve
- Patent number 4,428,559
- Issue date Jan 31, 1984
- Hitachi, Ltd.
- Ken Ichiryu
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Hydraulic operating apparatus
- Patent number 4,404,892
- Issue date Sep 20, 1983
- Hitachi, Ltd.
- Ichiro Nakamura
- H01 - BASIC ELECTRIC ELEMENTS