Rotary or oscillatory 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

Filing statistics

IPC F01L 7/00 belongs to the parent subclass F01L, which recorded 28,860 patent applications worldwide between 2013 and 2023. Annual filings declined from 3,209 in 2013 to 1,109 in 2023 (-65%), peaking at 3,780 applications in 2015. The most active applicants in class F01 are GE (GENERAL ELECTRIC COMPANY) (8,496 applications), UNITED TECHNOLOGIES CORPORATION (UTC) (7,291 applications) and SAFRAN AIRCRAFT ENGINES (5,503 applications).

Source: EPO PATSTAT, worldwide filings

Additional Content

Valve-gear specially for steam engines or specially for other machines or engines with variable fluid distribution

8 direct subcodes

Child Classifications

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F01L 7/02 with cylindrical, sleeve, or part-annularly-shaped valves
F01L 7/06 with disc-type valves
F01L 7/08 with conically- or frusto-conically-shaped valves
F01L 7/1 with valves of other specific shape, e.g. spherical
F01L 7/12 specially for two-stroke engines
F01L 7/14 Multiple-valve arrangements
F01L 7/16 Sealing or packing arrangements specially therefor
F01L 7/18 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