F01L1/44 - CPC Classification Index

ClassID:

137241 ⎘

F01L1/44 - CPC Classification

Classification description:

Valve-gear or valve arrangements, e.g. lift-valve gear Multiple-valve gear or arrangements, not provided for in preceding subgroups, e.g. with lift and different valves

Sub-classes:

F01L1/443 » {comprising a lift valve and at least one rotary valve} 1
F01L1/446 » {comprising a lift valve and at least one reed valve} 4

Recent Application in this class:

20250320827

2025-10-16

COAXIAL VALVE SYSTEM

20170362967

2017-12-21

Internal combustion engine

20110061633

2011-03-17

Internal combustion engine having intake manifold combined with holding tank

20070215078

2007-09-20

Methods and apparatus to use engine valves as both intake and exhaust valves