Patents-Review.com
ClassID:

143577 ⎘

F04C18/10 - CPC Classification

Classification description:

Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth equivalents, e.g. rollers, than the inner member

Sub-classes:
Recent Application in this class:
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ROTARY PUMP

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20220154719
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Scroll compressor and refrigeration cycle apparatus

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Gerotor pump and method of making pressure equalization in a gerotor pump

 #11
20180347362
2018-12-06

GEROTOR APPARATUS

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20180266419
2018-09-20

Hermetic compressor having inlet port arrangement including a suction passage defined in an intermediate plate

 #13
20170321698
2017-11-09

System and Method for Improved Performance of Gerotor Compressors and Expanders

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20170268504
2017-09-21

Internal gear pump

 #15
20170089337
2017-03-30

Arrangement for specifying a pressure

 #16
20170002809
2017-01-05

Rotating body, rotating body material, and method of manufacturing rotating body

 #17
20160348678
2016-12-01

Fluid pressure changing device

 #18
20160197526
2016-07-07

Permanent magnet motor, refrigeration compressor and air conditioning unit

 #19
20160194958
2016-07-07

Rotary expansible chamber devices and systems incorporating the same

 #20
20160169224
2016-06-16

Gear pump bearing dam

 #21
20160146205
2016-05-26

Structure for fixing shaft member in rotor member for fluid pump

 #22
20160115956
2016-04-28

Compressor and oil drain system

 #23
20160061202
2016-03-03

GEAR PUMP ON SHAFT

 #24
20160020659
2016-01-21

Electric motor, pump device using electric motor, and stator

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20150354570
2015-12-10

Displacement type rotary machine with controlling gears

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20150345497
2015-12-03

Compressor system with resonator

 #27
20150315913
2015-11-05

Rotary machine

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20150267702
2015-09-24

Gerotor with reduced leakage

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20150247405
2015-09-03

Refrigeration system including a rotary expansible chamber device having adjustable working-fluid ports

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20150204332
2015-07-23

Pumping unit and method for controlling such a pumping unit

 #31
20150167671
2015-06-18

Dual mechanical seal with embedded bearing for volatile fluids

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20150147211
2015-05-28

Gear pump bearing dam

 #33
20150050176
2015-02-19

Cycloidal Pinwheel Pair with Uniform Contact and One-tooth Difference

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20140356212
2014-12-04

TRANSMISSION FLUID PUMP SPEED CONTROL SYSTEMS AND METHODS

 #35
20140308147
2014-10-16

Gerotor apparatus for a quasi-isothermal Brayton cycle engine

 #36
20140271298
2014-09-18

Internal gear pump

 #37
20140255237
2014-09-11

Vane pump

 #38
20140154119
2014-06-05

Internal gear pump

 #39
20130236345
2013-09-12

COMPRESSOR UNIT INCLUDING GEAR ROTOR AND COMPRESSOR SYSTEM USING THE SAME

 #40
20100266435
2010-10-21

Gerotor apparatus for a quasi-isothermal Brayton cycle engine

 #41
20100213786
2010-08-26

Electric machine having rotor and stator configurations

 #42
20100132398
2010-06-03

Fluid machine and refrigeration cycle apparatus having the same

 #43
20090291009
2009-11-26

Rotary piston machine

 #44
20080229781
2008-09-25

Rotary compressor with fluidic passages in rotor

 #45
20070140888
2007-06-21

Compressor

 #46
20060279155
2006-12-14

Electric machine having a high-torque switched reluctance motor

 #47
20060239849
2006-10-26

Gerotor apparatus for a quasi-isothermal Brayton cycle engine

 #48
20060222522
2006-10-05

Vapor Compression Evaporative Air Conditioning systems and Components