IPC Subgroup
F01L 1/04 by means of cams, camshafts, cam discs, eccentrics, or the like
Introduced: September 1968
Last revised: January 2006
Full Title
Valve-gear or valve arrangements, e.g. lift-valve gear > Valve drive > by means of cams, camshafts, cam discs, eccentrics, or the like
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- Subclass:
- CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
Related Keywords
CAMSHAFTS for internal-combustion engine valves
3 direct subcodes
Child Classifications
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- F01L 1/047 Camshafts
- F01L 1/06 the cams, or the like, rotating at a higher speed than that corresponding to the valve cycle, e.g. operating four-stroke engine valves directly from crankshaft
- F01L 1/08 Shape of cams
Top Applicants
Top 10 applicants by patent filingsfor class F01, 2013–2023, worldwide · Source: EPO PATSTAT
- GE (GENERAL ELECTRIC COMPANY) US 8,496
- UNITED TECHNOLOGIES CORPORATION (UTC) US 7,291
- SAFRAN AIRCRAFT ENGINES FR 5,503
- TOYOTA MOTOR CORPORATION 4,556
- SIEMENS DE 3,992
- HYUNDAI MOTOR COMPANY KR 3,929
- RAYTHEON TECHNOLOGIES CORPORATION US 3,534
- FORD GLOBAL TECHNOLOGIES US 3,407
- TOYOTA MOTOR CORPORATION JP 3,042
- WEICHAI POWER COMPANY 2,888