Inventor
UEHARA KAZUO
20 patents
Patents
20 patentsUS5927073AJul 27, 1999
Electric hydraulic hybrid motor
KOMATSU MFG CO LTD25 citations92
US4517800AMay 21, 1985
Hydraulic control system for off-highway self-propelled work machines
KOMATSU MFG CO LTD27 citations92
US4203712AMay 20, 1980
Single or plural variable displacement pump control with an improved flow metering valve
KOMATSU MFG CO LTD28 citations82
US5877577AMar 2, 1999
Electric hydraulic hybrid motor, control device and control method for the same motor
KOMATSU MFG CO LTD15 citations74
US5188147AFeb 23, 1993
Pressure compensating type hydraulic valve
KOMATSU MFG CO LTD12 citations73
US4549466AOct 29, 1985
Split type oil hydraulic piston pump and pressurized oil feed circuit making use of the same pump
KOMATSU MFG CO LTD10 citations73
US4473090ASep 25, 1984
Hydraulic power system for implement actuators in an off-highway self-propelled work machine
KOMATSU MFG CO LTD11 citations73
US5845678ADec 8, 1998
Pressurized fluid supply system
KOMATSU MFG CO LTD9 citations72
US5784885AJul 28, 1998
Pressurized fluid supply system
KOMATSU MFG CO LTD12 citations72
US5651390AJul 29, 1997
Pressurized fluid supply system
KOMATSU MFG CO LTD12 citations72
US5253672AOct 19, 1993
Hydraulic pressure control system
KOMATSU MFG CO LTD13 citations72
US4420937ADec 20, 1983
Hydraulic circuit for a variable displacement pump
KOMATSU MFG CO LTD11 citations72
US4248573AFeb 3, 1981
Hydraulic control system for variable displacement pump
KOMATSU MFG CO LTD16 citations71
US4245962AJan 20, 1981
Displacement control system for variable displacement pump
KOMATSU MFG CO LTD14 citations71
US4244678AJan 13, 1981
Displacement control system for variable displacement pump
KOMATSU MFG CO LTD18 citations71
US4646622AMar 3, 1987
Hydraulic control apparatus
KOMATSU MFG CO LTD11 citations70
US4152896AMay 8, 1979
Hydraulic power system with a load-sensing and a cutoff control valve
KOMATSU MFG CO LTD9 citations70
US4306488ADec 22, 1981
Pressure-compensated directional control valve
KOMATSU MFG CO LTD4 citations62
US5255705AOct 26, 1993
Hydraulic pressure control system
KOMATSU MFG CO LTD4 citations61
US4248574AFeb 3, 1981
Hydraulic control system for variable displacement pumps
KOMATSU MFG CO LTD6 citations60