Inventor

YOSHIDA KUNIAKI

JP5 patents

Patents

5 patents

US4967557ANov 6, 1990

Control system for load-sensing hydraulic drive circuit

HITACHI CONSTRUCTION MACHINERY90 citations96

US4697418AOct 6, 1987

Control system for hydraulically-operated construction machinery

HITACHI CONSTRUCTION MACHINERY53 citations92

US4729222AMar 8, 1988

Brake circuit apparatus for hydraulic motor

HITACHI CONSTRUCTION MACHINERY21 citations82

US5074194ADec 24, 1991

Hydraulic driving method of and hydraulic driving apparatus for hydraulic machine

HITACHI CONSTRUCTION MACHINERY13 citations73

US4881450ANov 21, 1989

Drive control system for hydraulic machine

HITACHI CONSTRUCTION MACHINERY18 citations72