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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 1/06 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

  1. GE (GENERAL ELECTRIC COMPANY) US 8,496
  2. UNITED TECHNOLOGIES CORPORATION (UTC) US 7,291
  3. SAFRAN AIRCRAFT ENGINES FR 5,503
  4. TOYOTA MOTOR CORPORATION 4,556
  5. SIEMENS DE 3,992
  6. HYUNDAI MOTOR COMPANY KR 3,929
  7. RAYTHEON TECHNOLOGIES CORPORATION US 3,534
  8. FORD GLOBAL TECHNOLOGIES US 3,407
  9. TOYOTA MOTOR CORPORATION JP 3,042
  10. WEICHAI POWER COMPANY 2,888