IPC Main Group
F01L 5/00 Slide-valve gear or valve arrangements
Introduced: September 1968
Last revised: January 2006
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
Additional Content
Limiting references
Slide-valve gear or valve arrangements with pure rotary or oscillatory movement
Application references
Valve-gear specially for steam engines or specially for other machines or engines with variable fluid distribution
6 direct subcodes
Child Classifications
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- F01L 5/02 with other than cylindrical, sleeve, or part-annularly-shaped valves, e.g. with flat-type valves
- F01L 5/04 with cylindrical, sleeve, or part-annularly-shaped valves
- F01L 5/14 characterised by the provision of valves with reciprocating and other movements
- F01L 5/2 specially for two-stroke engines
- F01L 5/22 Multiple-valve arrangements
- F01L 5/24 Component parts, details, or accessories, not provided for in preceding subgroups of this group
Top Applicants
Top 10 applicants by patent filingsfor class F01, 2013–2023, worldwide · Source: EPO PATSTAT
- GE (GENERAL ELECTRIC COMPANY) US 8,496
- UNITED TECHNOLOGIES CORPORATION (UTC) US 7,291
- SAFRAN AIRCRAFT ENGINES FR 5,503
- TOYOTA MOTOR CORPORATION 4,556
- SIEMENS DE 3,992
- HYUNDAI MOTOR COMPANY KR 3,929
- RAYTHEON TECHNOLOGIES CORPORATION US 3,534
- FORD GLOBAL TECHNOLOGIES US 3,407
- TOYOTA MOTOR CORPORATION JP 3,042
- WEICHAI POWER COMPANY 2,888