ClassID:

136898

F01D13/003 - CPC Classification

Classification description:

Combinations of two or more machines or engines with at least two independent shafts, i.e. cross-compound

Recent Application in this class:
#1
20230037652
2023-02-09

Turbofan with offset gas generator and auxiliary power core

#2
20230010493
2023-01-12

Method for coupling a hydroelectric power plant to the grid comprising at least two hydroelectric units

#3
20220099035
2022-03-31

Gas turbine engine transfer efficiency

#4
20220024568
2022-01-27

Architecture for a propulsion system of a helicopter including a hybrid turboshaft engine and a system for reactivating said hybrid turboshaft engine

#5
20220018262
2022-01-20

MECHANICALLY DRIVEN AIR VEHICLE THERMAL MANAGEMENT DEVICE

#6
20220009646
2022-01-13

Motoring synchronization for multiple engines

#7
20210396148
2021-12-23

Multi-spool geared turbofan arrangement with integrated starter/generator

#8
20210381431
2021-12-09

Splitter and guide vane arrangement for gas turbine engines

#9
20210372291
2021-12-02

Low cost rocket

#10
20210270230
2021-09-02

Toroidal lift force engine

#11
20210028668
2021-01-28

Energy storage system and system enabling stable utilization of variable electric power

#12
20200400081
2020-12-24

Gas turbine engine transfer efficiency

#13
20200355118
2020-11-12

Turbo cluster gas turbine system and activation method thereof

#14
20200347742
2020-11-05

Gas turbine engine with a double wall core casing

#15
20200277079
2020-09-03

Air cycle machine connected to engine gearbox

#16
20200207482
2020-07-02

Pre-start motoring synchronization for multiple engines

#17
20200200086
2020-06-25

HIGH SPEED PROPULSION SYSTEM WITH INLET COOLING

#18
20200173300
2020-06-04

Power system with a coordinated power draw

#19
20200063595
2020-02-27

COMPRESSED GAS AND RECYCLED LIQUID TURBINE POWER SYSTEM

#20
20200040762
2020-02-06

Gas turbine engine heaters

#21
20190234301
2019-08-01

Multi-stage radial turboexpander

#22
20190113085
2019-04-18

TURBOMACHINE TRAIN AND METHOD FOR COUPLING THE TURBOMACHINE TRAIN

#23
20190010865
2019-01-10

Method for coupling two sub-shafts

#24
20180355749
2018-12-13

Distributed fan lubrication system

#25
20180339786
2018-11-29

Engine assembly with a dedicated voltage bus

#26
20180320591
2018-11-08

Combined two engine cycle with at least one recuperated cycle engine for rotor drive

#27
20180208322
2018-07-26

Aircraft comprising a propulsion assembly including a fan on the rear of the fuselage

#28
20180058242
2018-03-01

Controllable multi-spool gas turbine plant with independent generator speed control and hollow turbine-compressor separator

#29
20180045068
2018-02-15

Mechanically driven air vehicle thermal management device

#30
20180030883
2018-02-01

Compound engine assembly with common inlet

#31
20180022463
2018-01-25

Pre-start motoring synchronization for multiple engines

#32
20170306842
2017-10-26

Gas turbine engine with distributed fans

#33
20170305541
2017-10-26

Architecture for a propulsion system of a helicopter including a hybrid turboshaft engine and a system for reactivating said hybrid turboshaft engine

#34
20170137137
2017-05-18

Aircraft with a propulsion unit comprising a fan at the rear of the fuselage

#35
20170015411
2017-01-19

DRIVE CHAIN FOR A HELICOPTER INCORPORATING A PYROTECHNIC ASSISTANCE DRIVE MODULE AND HELICOPTER COMPRISING THE SAME

#36
20160273400
2016-09-22

Power generation system having compressor creating excess air flow and turbo-expander to increase turbine exhaust gas mass flow

#37
20160245154
2016-08-25

Compound engine assembly with common inlet

#38
20160115824
2016-04-28

Rotary system

#39
20160102634
2016-04-14

Reverse flow single spool core gas turbine engine

#40
20160061045
2016-03-03

Decoupled gas turbine engine

#41
20160003144
2016-01-07

Combined two engine cycle with at least one recuperated cycle engine for rotor drive

#42
20150330257
2015-11-19

MULTI-STAGE VOLUMETRIC FLUID EXPANSION DEVICE

#43
20150275762
2015-10-01

High speed propulsion system with inlet cooling

#44
20150240745
2015-08-27

Angled reverse core gas turbine engine with widened nozzle

#45
20150226117
2015-08-13

Gas turbine engine with distributed fans

#46
20150176488
2015-06-25

Power plant including a secondary engine for compensating for losses of power from main engines in a rotary wing aircraft

#47
20150125258
2015-05-07

Rotary wing aircraft having two main engines together with a less powerful secondary engine, and a corresponding method

#48
20150121838
2015-05-07

Conjoined reverse core flow engine arrangement

#49
20150013307
2015-01-15

Turbofan jet engine with low pressure shaft passing outside of core engine

#50
20140216047
2014-08-07

Two-shaft gas turbine

#51
20130000314
2013-01-03

Variable cycle turbine engine

#52
20110030374
2011-02-10

STEAM TURBINE FACILITY

#53
20100082217
2010-04-01

Method and system for providing cooling and power

#54
20100077765
2010-04-01

High-Pressure Fluid Compression System Utilizing Cascading Effluent Energy Recovery

#55
20100011741
2010-01-21

Gas turbine engine with dual fans driven about a central core axis

#56
20080169246
2008-07-17

High-pressure fluid compression system utilizing cascading effluent energy recovery

#57
20070028616
2007-02-08

Method and system for operative reconversion of pairs of pre-existing steam turbo-units

#58
20070022739
2007-02-01

Methods and apparatus for operating gas turbine engines

#59
20050086939
2005-04-28

Gas-turbine installation

#60
17482278
2022-10-18

Re-circulating heat pump turbine