F01C 1/10 of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
Full Title
Rotary-piston machines or engines (with axes of co-operating members non parallel F01C3/00; with the working-chamber walls at least partly resiliently deformable F01C5/00; with fluid ring or the like F01C7/00; rotary-piston machines or engines in which the working fluid is exclusively displaced by, or exclusively displaces, one or more reciprocating pistons F01B13/00) > of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing > of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
6 direct subcodes
Child Classifications
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- F01C 1/107 with helical teeth
- F01C 1/113 the inner member carrying rollers intermeshing with the outer member
Top Applicants
Top 10 applicants by patent filingsfor class F01, 2013–2023, worldwide · Source: EPO PATSTAT
- GE (GENERAL ELECTRIC COMPANY) US 9,989
- UNITED TECHNOLOGIES CORPORATION (UTC) US 8,110
- SAFRAN AIRCRAFT ENGINES FR 6,248
- HYUNDAI MOTOR COMPANY KR 4,530
- SIEMENS DE 4,461
- FORD GLOBAL TECHNOLOGIES US 4,029
- RAYTHEON TECHNOLOGIES CORPORATION US 3,947
- TOYOTA MOTOR CORPORATION JP 3,734
- GE (GENERAL ELECTRIC COMPANY) 3,415
- SCHAEFFLER TECHNOLOGIES & COMPANY DE 3,063