F01L31/12 - CPC Classification Index

ClassID:

137449 ⎘

F01L31/12 - CPC Classification

Classification description:

Valve drive, valve adjustment during operation, or other valve control, not provided for in groups -; Valve drive or valve adjustment, apart from tripping aspects; Positively-driven gear the drive being effected by eccentrics Valve adjustment by displacing eccentric

Recent Application in this class:

20230272739

2023-08-31

ORBITAL-EPICYCLE CRANKSHAFT WITH A REVERSIBLE AND ADJUSTABLE CONSTANT VOLUME COMBUSTION CYCLE AT TDC OR BDC

20200141291

2020-05-07

Valve mechanism, engine and vehicle

20200056518

2020-02-20

Variable valve timing device and assembly method of variable valve timing device

20060196457

2006-09-07

Valve actuator assembly