Inventor
MATSUSHITA OSAMI
JP16 patents
Patents
16 patentsUS5256952AOct 26, 1993
Magnetic bearing control method and apparatus
HITACHI LTD32 citations92
US4685335AAug 11, 1987
Method and apparatus for monitoring cracks of a rotatable body
HITACHI LTD53 citations92
US4557679ADec 10, 1985
Rotary fluid machine with thrust bearing mounting unit
HITACHI LTD29 citations92
US5012359AApr 30, 1991
Magnetic disk apparatus
HITACHI LTD23 citations91
US4579508AApr 1, 1986
Turbomolecular pump
HITACHI LTD43 citations91
US5486729AJan 23, 1996
Method and apparatus for controlling a magnetic bearing
HITACHI LTD23 citations90
US5230616AJul 27, 1993
Rotary compressor with shaft balancers
HITACHI LTD51 citations90
US4697128ASep 29, 1987
Control apparatus for a rotor supported by an electromagnetic bearing
HITACHI LTD36 citations90
US5408875AApr 25, 1995
Balancing method for flexible rotor and a balancer applicable to the balancing method
HITACHI LTD31 citations89
US4841212AJun 20, 1989
Electromagnetic bearing control apparatus
HITACHI LTD34 citations88
US4377947AMar 29, 1983
Device for identifying rubbing locations in rotating machines
HITACHI LTD21 citations81
US5491396AFeb 13, 1996
Magnetic bearing apparatus and rotating machine having such an apparatus
HITACHI LTD16 citations73
US4732530AMar 22, 1988
Turbomolecular pump
HITACHI LTD8 citations71
US5051852ASep 24, 1991
Mechanism for balancing a rotary magnetic head apparatus
HITACHI LTD12 citations70
US4992714AFeb 12, 1991
Band pass filter device and a method of filtering using such a device
HITACHI LTD11 citations69
US4768921ASep 6, 1988
Turbomolecular vacuum pump
HITACHI LTD13 citations68