F01L 1/26

Valve-gear or valve arrangements: characterised by the provision of two or more

Official title: characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder (with coaxial valves F01L1/28)

F01L1/26 (Valve-gear or valve arrangements: characterised by the provision of two or more) appears on 1,458 US grants and 1,006 published applications in this corpus.

Search patents in F01L

Granted patents: 1,458
Published applications: 1,006
Assignees: 271
Inventors: 1,904
Latest grant: 4 Aug 2026

Filings by year

F01L 1/26: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	2	0
1977	0	0
1978	0	0
1979	0	0
1980	1	0
1981	3	0
1982	5	0
1983	1	0
1984	7	0
1985	22	0
1986	19	0
1987	27	0
1988	28	0
1989	30	0
1990	39	0
1991	35	0
1992	36	0
1993	39	0
1994	40	0
1995	35	0
1996	41	0
1997	44	0
1998	33	0
1999	22	0
2000	22	0
2001	32	17
2002	36	35
2003	33	36
2004	34	51
2005	41	57
2006	54	32
2007	28	38
2008	29	44
2009	30	60
2010	30	47
2011	42	44
2012	39	26
2013	27	23
2014	26	25
2015	29	33
2016	29	50
2017	34	55
2018	37	46
2019	53	45
2020	60	49
2021	40	40
2022	49	44
2023	24	27
2024	44	36
2025	35	32
2026	12	14

By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.

Valve-gear or valve arrangements: characterised by the provision of two or more

Filings by year

Subgroups

Recent patents

Most cited