ClassID:

136614

F01C1/20 - CPC Classification

Classification description:

Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with dissimilar tooth forms

Recent Application in this class:
#1
20190078438
2019-03-14

Positive displacement rotary devices

#2
20180100502
2018-04-12

ROTARY DEVICE AND A METHOD OF DESIGNING AND MAKING A ROTARY DEVICE

#3
20170226856
2017-08-10

Positive displacement rotary devices with uniform tolerances

#4
20170130583
2017-05-11

Positive displacement rotary motion device including a pulse detonation device

#5
20170009583
2017-01-12

Actuator of a rotary positive displacement machine

#6
20170002730
2017-01-05

Combustion engine without compression and method

#7
20160312691
2016-10-27

Isochoric heat addition engines and methods

#8
20150308272
2015-10-29

ROTARY PISTON ENGINE, IN PARTICULAR WITH ROTARY PISTONS CIRCULATING ABOUT THE IGNITION CHAMBER

#9
20150184657
2015-07-02

Positive displacement rotary devices with uniquely configured voids

#10
20150167464
2015-06-18

Positive displacement rotary devices with uniform tolerances

#11
20150090228
2015-04-02

Isochoric heat addition engines and methods

#12
20140325986
2014-11-06

Rotary engine and process

#13
20140255232
2014-09-11

Planetary rotor machine manifold

#14
20140238337
2014-08-28

Internal combustion engine

#15
20140216000
2014-08-07

Indexed positive displacement rotary motion device

#16
20140076155
2014-03-20

Rotary three dimensional variable volume machine

#17
20140056745
2014-02-27

Fixed-vane positive displacement rotary devices

#18
20130333553
2013-12-19

3-stroke/6-stroke rocket jet engine

#19
20130251582
2013-09-26

Screw shaft structure for double-shaft extruder

#20
20130142685
2013-06-06

Rotary device and a method of designing and making a rotary device

#21
20120251374
2012-10-04

Multiple rotor fluid transfer engine

#22
20120103301
2012-05-03

Rotary valve continuous flow expansible chamber dynamic and positive displacement rotary devices

#23
20110023814
2011-02-03

Isochoric heat addition engines and methods

#24
20100326398
2010-12-30

ROTOR-PISTON INTERNAL COMBUSTION ENGINE

#25
20100192896
2010-08-05

INTERNAL COMBUSTION ENGINES WITH RING-SHAPED CYLINDERS

#26
20100166591
2010-07-01

Positive displacement rotary components having main and gate rotors with axial flow inlets and outlets

#27
20100083933
2010-04-08

Rotary internal combustion engine with annular chamber

#28
20100074786
2010-03-25

Indexed positive displacement rotary motion device

#29
20100061873
2010-03-11

Bi-directional converter between pressure and rotational force

#30
20100028188
2010-02-04

Low speed, high torque rotary abutment motor

#31
20100021331
2010-01-28

INTERNAL COMBUSTION ENGINE

#32
20100018490
2010-01-28

Rotary internal combustion engine with annular chamber

#33
20090257898
2009-10-15

Rotary pump or motor with orbital piston aspiration

#34
20090229787
2009-09-17

Generator using gravitational and geothermal energy

#35
20090214371
2009-08-27

Multiple rotor fluid transfer engine

#36
20090142211
2009-06-04

Rotary steam engine

#37
20090028739
2009-01-29

RING TURBO-PISTON ENGINE AND RING TURBO-PISTON SUPERCHARGER

#38
20080199341
2008-08-21

Motor and method of operating the same

#39
20080050262
2008-02-28

ROTARY PUMP HAVING A VALVE ROTOR AND ONE OR MORE VANE ROTORS AND METHODS FOR PUMPING FLUIDS

#40
20070277524
2007-12-06

Engine And An Apparatus For Providing Forced Aspiration To An Engine

#41
20070172375
2007-07-26

Non-eccentric devices

#42
20070137610
2007-06-21

Rotary engine

#43
20070137609
2007-06-21

True rotary internal combustion engine

#44
20070051087
2007-03-08

Gas turbine engine system

#45
20070044751
2007-03-01

Rotary piston power system

#46
20060201473
2006-09-14

Parallel rotary engine

#47
20060196464
2006-09-07

External combustion rotary piston engine

#48
20060150946
2006-07-13

Rotary piston engine

#49
20060120910
2006-06-08

Non-eccentric devices

#50
20060101800
2006-05-18

Gas turbine engine system

#51
20050284440
2005-12-29

Rotary machine and thermal cycle

#52
20050284439
2005-12-29

Asymmetric complete expansion rotary engine cycle

#53
20050268881
2005-12-08

O'Connor/Price rotary engine

#54
20050247270
2005-11-10

Rotary combustion engine with lateral thrust between opposing and engaging combustion flywheels

#55
20050109310
2005-05-26

Rotary machine and thermal cycle