Eiki Izumi

Person

Ibaraki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Load sensing control system for hydraulic machine
- Patent number 5,285,642
- Issue date Feb 15, 1994
- Hitachi Construction Machinery Co., Ltd.
- Hiroshi Watanabe
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Hydraulic drive traveling system
- Patent number 5,177,964
- Issue date Jan 12, 1993
- Hitachi Construction Machinery Co., Ltd.
- Hideaki Tanaka
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Control system for hydraulic pump
- Patent number 5,170,625
- Issue date Dec 15, 1992
- Hitachi Construction Machinery Co., Ltd.
- Hiroshi Watanabe
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Hydraulic drive system for construction machine
- Patent number 5,155,996
- Issue date Oct 20, 1992
- Hitachi Construction Machinery Co., Ltd.
- Akira Tatsumi
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Control system for load sensing hydraulic drive circuit
- Patent number 5,129,230
- Issue date Jul 14, 1992
- Hitachi Construction Machinery Co., Ltd.
- Eiki Izumi
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Variable displacement bent axis type hydraulic machine
- Patent number 5,085,128
- Issue date Feb 4, 1992
- Hitachi Construction Machinery Co., Ltd.
- Shigetaka Nakamura
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Hydraulic drive system for construction machines
- Patent number 5,056,312
- Issue date Oct 15, 1991
- Hitachi Construction Machinery Co., Ltd.
- Toichi Hirata
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Control system for load-sensing hydraulic drive circuit
- Patent number 4,967,557
- Issue date Nov 6, 1990
- Hitachi Construction Machinery Co., Ltd.
- Eiki Izumi
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Flow control valves for hydraulic motor system
- Patent number 4,945,723
- Issue date Aug 7, 1990
- Hitachi Construction Machinery Co., Ltd.
- Eiki Izumi
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Control system for controlling input power to variable displacement...
- Patent number 4,809,504
- Issue date Mar 7, 1989
- Hitachi Construction Machinery Co., Ltd.
- Eiki Izumi
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Method of and system for controlling hydraulic power system
- Patent number 4,606,313
- Issue date Aug 19, 1986
- Hitachi Construction Machinery Co., Ltd.
- Eiki Izumi
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Control system for hydraulic circuit means
- Patent number 4,587,808
- Issue date May 13, 1986
- Hitachi Construction Machinery Co., Ltd.
- Hiroshi Watanabe
- G05 - CONTROLLING REGULATING
Information Patent Grant
Control system for hydraulic circuit apparatus
- Patent number 4,586,330
- Issue date May 6, 1986
- Hitachi Construction Machinery Co., Ltd.
- Hiroshi Watanabe
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Hydraulic power system
- Patent number 4,571,941
- Issue date Feb 25, 1986
- Hitachi Construction Machinery Co, Ltd.
- Yukio Aoyagi
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Control valve assembly
- Patent number 4,565,221
- Issue date Jan 21, 1986
- Hitachi, Ltd.
- Kunihiko Yoshida
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Control system for hydraulic circuit apparatus
- Patent number 4,561,249
- Issue date Dec 31, 1985
- Hitachi, Ltd.
- Hiroshi Watanabe
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Hydraulic drive system having a plurality of prime movers
- Patent number 4,561,250
- Issue date Dec 31, 1985
- Hitachi Construction Machinery Co., Ltd.
- Yukio Aoyagi
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Failure detection system for hydraulic pumps
- Patent number 4,558,593
- Issue date Dec 17, 1985
- Hitachi Construction Machinery Co., Ltd.
- Hiroshi Watanabe
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Flushing valve system in closed circuit hydrostatic power transmission
- Patent number 4,531,369
- Issue date Jul 30, 1985
- Hitachi Construction Machinery Co., Ltd.
- Eiki Izumi
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Control system for hydrostatic power transmission
- Patent number 4,528,813
- Issue date Jul 16, 1985
- Hitachi Construction Machinery Co., Ltd.
- Eiki Izumi
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Hydraulic drive system for single rod cylinder
- Patent number 4,520,626
- Issue date Jun 4, 1985
- Hitachi Construction Machinery Co., Ltd.
- Kichio Nakajima
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Circuit pressure control system for hydrostatic power transmission
- Patent number 4,510,750
- Issue date Apr 16, 1985
- Hitachi Construction Machinery Co., Ltd.
- Eiki Izumi
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Failure detection system for hydraulic pump
- Patent number 4,489,551
- Issue date Dec 25, 1984
- Hitachi Construction Machinery Co., Ltd.
- Hiroshi Watanabe
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Automatic neutral point detecting system for hydraulic pump
- Patent number 4,489,552
- Issue date Dec 25, 1984
- Hitachi Construction Machinery Co., Ltd.
- Hiroshi Watanabe
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Control method and control system for hydrostatic drive system
- Patent number 4,451,893
- Issue date May 29, 1984
- Hitachi Construction Machinery Co., Ltd.
- Eiki Izumi
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Control method of a system of internal combustion engine and hydrau...
- Patent number 4,395,199
- Issue date Jul 26, 1983
- Hitachi Construction Machinery Co., Ltd.
- Eiki Izumi
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Drive system for construction machinery and method of controlling h...
- Patent number 4,369,625
- Issue date Jan 25, 1983
- Hitachi Construction Machinery Co., Ltd.
- Eiki Izumi
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

Person

Patents Grantslast 30 patents

Load sensing control system for hydraulic machine

Hydraulic drive traveling system

Control system for hydraulic pump

Hydraulic drive system for construction machine

Control system for load sensing hydraulic drive circuit

Variable displacement bent axis type hydraulic machine

Hydraulic drive system for construction machines

Control system for load-sensing hydraulic drive circuit

Flow control valves for hydraulic motor system

Control system for controlling input power to variable displacement...

Method of and system for controlling hydraulic power system

Control system for hydraulic circuit means

Control system for hydraulic circuit apparatus

Hydraulic power system

Control valve assembly

Control system for hydraulic circuit apparatus

Hydraulic drive system having a plurality of prime movers

Failure detection system for hydraulic pumps

Flushing valve system in closed circuit hydrostatic power transmission

Control system for hydrostatic power transmission

Hydraulic drive system for single rod cylinder

Circuit pressure control system for hydrostatic power transmission

Failure detection system for hydraulic pump

Automatic neutral point detecting system for hydraulic pump

Control method and control system for hydrostatic drive system

Control method of a system of internal combustion engine and hydrau...

Drive system for construction machinery and method of controlling h...