ClassID:

137199

F01L1/30 - CPC Classification

Classification description:

Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of positively opened and closed valves, i.e. desmodromic valves

Recent Application in this class:
#1
20260028923
2026-01-29

APPARATUS COMPRISING A PLURALITY OF TOOLS EACH HAVING AT LEAST ONE HYDRAULIC CHAMBER FOR HYDRAULIC LIQUID

#2
20250035016
2025-01-30

No Lash Dual Stem I.C.E. valve

#3
20220389845
2022-12-08

Engine valve actuation

#4
20220065139
2022-03-03

Engine valve actuation

#5
20220056820
2022-02-24

Valve timing adjusting device

#6
20210180481
2021-06-17

Valve actuation system comprising in-series lost motion components for use in cylinder deactivation and auxiliary valve actuations

#7
20190203616
2019-07-04

Desmodromic valve train

#8
20190107011
2019-04-11

Valve train assembly

#9
20180363520
2018-12-20

Variable duration valve system

#10
20170284234
2017-10-05

Valve train system

#11
20160153323
2016-06-02

Desmodromic valve systems and methods of operation thereof

#12
20160138441
2016-05-19

Internal combustion engine

#13
20150377081
2015-12-31

Cam rocker lever for operating valves

#14
20150194858
2015-07-09

Rotary electromagnetic actuator

#15
20150096514
2015-04-09

POSITIVE CONTROL (DESMODROMIC) VALVE SYSTEMS FOR INTERNAL COMBUSTION ENGINES

#16
20150059672
2015-03-05

Valve control means for an internal combustion engine and internal combustion engine

#17
20140311433
2014-10-23

Internal combustion engine independent valve actuator

#18
20140174388
2014-06-26

Rockerless desmodromic valve system

#19
20140130780
2014-05-15

Internal combustion engine

#20
20130055974
2013-03-07

Desmodromic hydraulic valve train

#21
20120293051
2012-11-22

Rotary electromagnetic actuator

#22
20120160199
2012-06-28

Rockerless desmodromic valve system

#23
20120085305
2012-04-12

Positive control (desmodromic) valve systems for internal combustion engines

#24
20110073064
2011-03-31

Integrally cast block and gaseous fuel injected generator engine

#25
20110056462
2011-03-10

FOUR CYCLE ENGINE CARBURETORS

#26
20110036330
2011-02-17

Internal combustion engine

#27
20100170466
2010-07-08

Opposed piston diesel engine

#28
20100083923
2010-04-08

Valve operating device for internal combustion engine

#29
20090288630
2009-11-26

Zero float valve for internal combustion engine and method of operation thereof

#30
20090250030
2009-10-08

Engine with desmodromically actuated rocker

#31
20090173299
2009-07-09

Valve system for opposed piston engines

#32
20090095243
2009-04-16

Valve-stroke controls

#33
20090050083
2009-02-26

Engine with round lobe

#34
20090013967
2009-01-15

SPRING-LESS VALVE TRAIN FOR INTERNAL COMBUSTION ENGINE

#35
20080314342
2008-12-25

DESMODROMIC VARIABLE VALVE ACTUATION

#36
20080115771
2008-05-22

Gas exchange control mechanism for an opposed-piston engine

#37
20080110425
2008-05-15

Cam mechanism having forced-valve-opening/closing cams and cam-profile setting method

#38
20080060596
2008-03-13

Desmodromic valve system including single cam surface for closing and opening the valve

#39
20080053388
2008-03-06

Springless valve system

#40
20080035870
2008-02-14

Programmable high speed valve actuator and power supply therefor

#41
20070181112
2007-08-09

Valve-operating mechanism for internal combustion engine

#42
20070163554
2007-07-19

Rotary-actuated exhaust gas recirculation valve having a seating force attenuator

#43
20070006835
2007-01-11

Desmodromic valve system and retrofit kit for conventional pushrod engines including replaceable cam lobes for adjusting lift and duration and hydraulic lifters for increased reliability

#44
20060027194
2006-02-09

Positive-guidance apparatus for conversion of a rotary movement of a drive to a reciprocating movement of a part

#45
20060000436
2006-01-05

System and method for controlling engine valve lift and valve opening percentage

#46
20050224029
2005-10-13

Lobe-less cam for use in a springless poppet valve system

#47
20050188936
2005-09-01

Positively guided valve drive

#48
20050132992
2005-06-23

Forced opening and closing type valve operating system

#49
20050092274
2005-05-05

Device for converting a rotational movement into a reciprocating movement

#50
20050028768
2005-02-10

Valve-driving system and method for internal combustion engine, and power output apparatus

#51
20050016477
2005-01-27

Linear cam valve system

#52
20050005885
2005-01-13

Valve mechanism, in particular for internal combustion engines of motor vehicles

#53
17452136
2023-03-28

Intake valve systems

#54
14178881
2016-06-14

Unitary cam follower and valve preload spring for a desmodromic valve mechanism