Inventor
HAYASE ISAO
JP43 patents
⚠️ This page may combine multiple inventors who share the name “HAYASE ISAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
38 patentsUS6589035B1Jul 8, 2003
Scroll compressor having a valved back-pressure chamber and a bypass for over-compression
HITACHI LTD95 citations98
US7354259B2Apr 8, 2008
Scroll compressor having a valved back pressure chamber and a bypass for overcompression
HITACHI LTD67 citations97
US7137796B2Nov 21, 2006
Scroll compressor
HITACHI LTD71 citations97
US7118358B2Oct 10, 2006
Scroll compressor having a back-pressure chamber control valve
HITACHI LTD76 citations97
US6769888B2Aug 3, 2004
Scroll compressor having a valved back pressure chamber and a bypass for overcompression
HITACHI LTD69 citations96
US5938417AAug 17, 1999
Scroll type fluid machine having wraps formed of circular arcs
HITACHI LTD74 citations96
US5063829ANov 12, 1991
Variable displacement swash plate type compressor
HITACHI LTD65 citations96
US5960697AOct 5, 1999
Axial piston machine
HITACHI LTD30 citations92
US5531577AJul 2, 1996
Scroll type fluid machine having a lever driving mechanism
HITACHI LTD37 citations92
US5231914AAug 3, 1993
Variable displacement compressor
HITACHI LTD27 citations92
US5105728AApr 21, 1992
Balanced variable-displacement compressor
HITACHI LTD40 citations92
US4801248AJan 31, 1989
Variable capacity swash plate compressor
HITACHI LTD35 citations92
US4723895AFeb 9, 1988
Method of and apparatus for effecting volume control of compressor
HITACHI LTD30 citations92
US6352418B1Mar 5, 2002
Displacement type fluid machine
HITACHI LTD27 citations91
US7021912B2Apr 4, 2006
Scroll fluid machine
HITACHI LTD13 citations82
US6345967B1Feb 12, 2002
Scroll type fluid machine having different wrap side surface clearances
HITACHI LTD14 citations82
US4608002AAug 26, 1986
Rotary vane compressor with hook-like suction passage
HITACHI LTD25 citations82
US4515513AMay 7, 1985
Rotary compressor with inner and outer cylinders and axial insert type discharge valves
HITACHI LTD22 citations82
US4929159AMay 29, 1990
Variable-displacement rotary compressor
HITACHI LTD21 citations80
US4619595AOct 28, 1986
Capacity control device for compressor
HITACHI LTD21 citations78
US7086359B2Aug 8, 2006
Rotational phase adjuster
HITACHI LTD10 citations74
US6280165B1Aug 28, 2001
Scroll type fluid machine
HITACHI LTD8 citations74
US7581519B2Sep 1, 2009
Phase adjusting apparatus and a cam shaft phase adjusting apparatus for an internal combustion engine
HITACHI LTD7 citations73
US6494696B2Dec 17, 2002
Scroll compressor
HITACHI LTD7 citations73
US4515514AMay 7, 1985
Vane-type rotary machine
HITACHI LTD16 citations73
US4507068AMar 26, 1985
Vane type rotary machine
HITACHI LTD13 citations73
US6905318B2Jun 14, 2005
Compressor including tapered discharged valve and valve seat
HITACHI LTD11 citations72
US6637550B2Oct 28, 2003
Displacement type fluid machine
HITACHI LTD10 citations72
US4815943AMar 28, 1989
Variable displacement wobble plate compressor with capacity control valve
HITACHI LTD16 citations71
US4711620ADec 8, 1987
Moving vane type compressor
HITACHI LTD10 citations69
US6332763B1Dec 25, 2001
Displacement type fluid machine having an orbiting displacer forming a plurality of spaces
HITACHI LTD3 citations63
US6164941ADec 26, 2000
Displacement type fluid machine having an orbiting displacer forming a plurality of spaces
HITACHI LTD4 citations63
US4636148AJan 13, 1987
Vane type compressor with volume control
HITACHI LTD6 citations63
US7150251B2Dec 19, 2006
Valve timing control apparatus
HITACHI LTD6 citations62
US5009577AApr 23, 1991
Rotary compressor of variable displacement type
HITACHI LTD6 citations58
US7424875B2Sep 16, 2008
Phase controller and cam shaft phase controller for internal combustion engine
HITACHI LTD1 citations52
US6332764B1Dec 25, 2001
Displacement type fluid machine having an orbiting displacer forming a plurality of spaces and method for manufacturing same
HITACHI LTD0 citations52
US4815195AMar 28, 1989
Method of combining plurality of parts and structure of plurality of parts combined by same
HITACHI LTD0 citations37