F04C 2/10

Of internal-axis type with the outer member having more teeth or tooth-equivalents

Official title: of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member

F04C2/10 (Of internal-axis type with the outer member having more teeth or tooth-equivalents) appears on 1,806 US grants and 1,781 published applications in this corpus.

Search patents in F04C

Granted patents: 1,806
Published applications: 1,781
Assignees: 711
Inventors: 2,963
Latest grant: 6 Oct 2026

Filings by year

F04C 2/10: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	14	0
1977	8	0
1978	7	0
1979	10	0
1980	9	0
1981	7	0
1982	8	0
1983	9	0
1984	16	0
1985	13	0
1986	12	0
1987	20	0
1988	16	0
1989	14	0
1990	17	0
1991	17	0
1992	26	0
1993	16	0
1994	16	0
1995	17	0
1996	16	0
1997	19	0
1998	27	0
1999	16	0
2000	46	0
2001	34	6
2002	33	28
2003	34	42
2004	35	52
2005	26	60
2006	32	55
2007	25	48
2008	34	62
2009	31	67
2010	43	65
2011	46	51
2012	40	57
2013	45	72
2014	63	96
2015	61	108
2016	60	108
2017	83	76
2018	79	117
2019	90	91
2020	81	98
2021	86	88
2022	83	79
2023	75	72
2024	80	73
2025	74	63
2026	37	47

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

Of internal-axis type with the outer member having more teeth or tooth-equivalents

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