CPC Subgroup Additional Only
F05D 2270/01 Purpose of the control system
Full Title
Control > Purpose of the control system
17 direct subcodes
Child Classifications
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- F05D 2270/02 to control rotational speed (n)
- F05D 2270/03 in variable speed operation
- F05D 2270/04 to control acceleration (u)
- F05D 2270/05 to affect the output of the engine
- F05D 2270/06 to match engine to driven device
- F05D 2270/07 to improve fuel economy
- F05D 2270/08 to produce clean exhaust gases
- F05D 2270/09 to cope with emergencies
- F05D 2270/10 to cope with, or avoid, compressor flow instabilities
- F05D 2270/11 to prolong engine life
- F05D 2270/12 to maintain desired vehicle trajectory parameters
- F05D 2270/13 to control two or more engines simultaneously
- F05D 2270/14 to control thermoacoustic behaviour in the combustion chambers
- F05D 2270/16 to control water or steam injection
- F05D 2270/17 to control boundary layer
- F05D 2270/18 using fluidic amplifiers or actuators
- F05D 2270/20 to optimize the performance of a machine
Top Applicants
Top 10 applicants by patent filingsfor class F05, 2013–2023, worldwide · Source: EPO PATSTAT
- GE (GENERAL ELECTRIC COMPANY) US 12,002
- UNITED TECHNOLOGIES CORPORATION (UTC) US 8,736
- SAFRAN AIRCRAFT ENGINES FR 6,804
- RAYTHEON TECHNOLOGIES CORPORATION US 4,530
- SIEMENS DE 4,371
- GE (GENERAL ELECTRIC COMPANY) 3,686
- ROLLS-ROYCE GB 3,594
- PRATT & WHITNEY CANADA CORPORATION CA 3,415
- VESTAS DK 3,076
- WOBBEN PROPERTIES DE 2,614