ClassID:

138955

F02B75/30 - CPC Classification

Classification description:

Other engines; Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders with one working piston sliding inside another

Recent Application in this class:
#1
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Piston System For a Compression Engine

#2
20250092819
2025-03-20

Dual piston based gensets for vehicle electrification

#3
20220282620
2022-09-08

Engine with gas exchange through piston rod

#4
20210293177
2021-09-23

Two stroke engine with valves actuated by air pressure near bottom dead center

#5
20200408145
2020-12-31

Wireless control of actuated valve in variable compression ratio piston

#6
20200284149
2020-09-10

Engine with work stroke and gas exchange through piston rod

#7
20200056480
2020-02-20

Engine with work stroke and gas exchange through piston rod

#8
20200024946
2020-01-23

Engine with work stroke and gas exchange through piston rod

#9
20190218609
2019-07-18

Methods of predicting mortality risk by determining telomere length

#10
20180347415
2018-12-06

Two-stroke internal combustion engine with crankcase lubrication system

#11
20180128132
2018-05-10

Two-stroke internal combustion engine

#12
20180106150
2018-04-19

Engine with compression and momentum stroke

#13
20170356336
2017-12-14

Engine system with two pistons

#14
20170016536
2017-01-19

Gapless piston ring for internal combustion engine

#15
20170016360
2017-01-19

Timed gas exchange in engine using piston as exhaust valve

#16
20160326953
2016-11-10

Potential energy storage engine

#17
20160305317
2016-10-20

Engine

#18
20120291743
2012-11-22

Concentric cylinder engine

#19
20110083434
2011-04-14

Method and apparatus for achieving higher thermal efficiency in a steam engine or steam expander

#20
20100300100
2010-12-02

High efficiency dual cycle internal combustion steam engine and method

#21
20090293480
2009-12-03

High efficiency multicycle internal combustion engine with waste heat recovery

#22
20090101004
2009-04-23

Two part piston for an internal combustion engine

#23
20080245333
2008-10-09

Four stroke engine with a fuel saving sleeve

#24
20060193739
2006-08-31

Retro mechanical post mechanical and bi-mechanical traction engines

#25
20060048729
2006-03-09

Supercharged two-stroke engine with upper piston extensions