Patents-Review.com
ClassID:

136701 ⎘

F01C20/18 - CPC Classification

Classification description:

Control of, monitoring of, or safety arrangements for, machines or engines characterised by varying the volume of the working chamber

Sub-classes:
Recent Application in this class:
#1
20210381506
2021-12-09

Shifting head assisted rotary positive displacement device

 #2
20200332657
2020-10-22

Liquid pump capable of achieving pressure equilibrium

 #3
20200123970
2020-04-23

Rotary internal combustion engine with unequal volumetric ratios

 #4
20200109709
2020-04-09

VARIABLE DISPLACEMENT OIL PUMP

 #5
20190277280
2019-09-12

PUMP DEVICE

 #6
20190010806
2019-01-10

Control device to achieve variable compression ratio for triangle rotary engine

 #7
20180223728
2018-08-09

Rotary internal combustion engine with unequal volumetric ratios

 #8
20160369795
2016-12-22

Variable delivery external gear machine

 #9
20160312611
2016-10-27

Multiple vane roto-dynamic variable displacement kinetic system

 #10
20160108733
2016-04-21

Silent gear pump or motor suppressing troubles of trapping fluid

 #11
20150369240
2015-12-24

Vane pump with multiple control chambers

 #12
20130195705
2013-08-01

Vane pump with multiple control chambers

 #13
20120195782
2012-08-02

SYSTEM FOR CONSTRUCTION OF COMPRESSORS AND ROTARY ENGINE, WITH VOLUMETRIC DISPLACEMENT AND COMPRESSION RATE DYNAMICALLY VARIABLE

 #14
20120048230
2012-03-01

Rotary vane engines with movable rotors, and engine systems comprising same

 #15
20100132659
2010-06-03

CAT AND MOUSE TYPE MACHINE WITH MULTI-PURPOSE PORTS

 #16
20080310983
2008-12-18

Expander

 #17
20070137873
2007-06-21

PNEUMATIC MOTOR IMPROVEMENTS AND PNEUMATIC TOOLS INCORPORATING SAME

 #18
20060193740
2006-08-31

Apparatus adapted to perform as compressor, motor, pump and internal combustion engine

 #19
20060113099
2006-06-01

Pneumatic motor improvements and pneumatic tools incorporating same