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CPC Subgroup
F01B 7/06

using only connecting-rods for conversion of reciprocatory into rotary motion or vice versa

Full Title

Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders (in opposite arrangement relative to main shaft F01B1/08) > with oppositely reciprocating pistons > acting on same main shaft > using only connecting-rods for conversion of reciprocatory into rotary motion or vice versa

Filing statistics

CPC F01B 7/06 belongs to the parent subclass F01B, which recorded 6,059 patent applications worldwide between 2013 and 2023. Annual filings declined from 706 in 2013 to 260 in 2023 (-63%), peaking at 768 applications in 2014. The most active applicants in class F01 are GE (GENERAL ELECTRIC COMPANY) (9,989 applications), UNITED TECHNOLOGIES CORPORATION (UTC) (8,110 applications) and SAFRAN AIRCRAFT ENGINES (6,248 applications).

Source: EPO PATSTAT, worldwide filings

2 direct subcodes

Child Classifications

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  • F01B 7/08 with side rods
  • F01B 7/10 having piston-rod of one piston passed through other piston

Top Applicants

Top 10 applicants by patent filingsfor 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