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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
F01L 1/04

by means of cams, camshafts, cam discs, eccentrics or the like (F01L1/10 takes precedence)

Introduced: September 1968

Title

Titles differ between systems:

IPC: by means of cams, camshafts, cam discs, eccentrics, or the like

CPC: by means of cams, camshafts, cam discs, eccentrics or the like (F01L1/10 takes precedence)

Full Title

Full titles differ between systems:

IPC:

Valve-gear or valve arrangements, e.g. lift-valve gear > Valve drive > by means of cams, camshafts, cam discs, eccentrics, or the like

CPC:

Valve-gear or valve arrangements, e.g. lift-valve gear (lift-valve and valve-seat assemblies per se F01L3/00; slide-valve gear F01L5/00; actuated non-mechanically F01L9/00; valve arrangements in working piston or piston rod F01L11/00; modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations F01L13/00) > Valve drive (transmitting-gear between valve drive and valve F01L1/12) > by means of cams, camshafts, cam discs, eccentrics or the like (F01L1/10 takes precedence)

Of 5 combined children, 3 exist in both systems.

2 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • F01L 1/042 CPC only CPC only
  • F01L 1/044 CPC only CPC only
  • F01L 1/06 the cams, or the like, rotating at a higher speed than that corresponding to the valve cycle, e.g. operating fourstroke engine valves directly from crankshaft IPC+CPC Available in IPC and CPC
  • F01L 1/08 Shape of cams IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

Class F01,2013–2023, worldwide · Source: EPO PATSTAT

  1. GE (GENERAL ELECTRIC COMPANY) US 9,989
  2. UNITED TECHNOLOGIES CORPORATION (UTC) US 8,110
  3. SAFRAN AIRCRAFT ENGINES FR 6,248
  4. HYUNDAI MOTOR COMPANY KR 4,530
  5. SIEMENS DE 4,461
  6. FORD GLOBAL TECHNOLOGIES US 4,029
  7. RAYTHEON TECHNOLOGIES CORPORATION US 3,947
  8. TOYOTA MOTOR CORPORATION JP 3,734
  9. GE (GENERAL ELECTRIC COMPANY) 3,415
  10. SCHAEFFLER TECHNOLOGIES & COMPANY DE 3,063