F16H 21/18
Crank gearings
Official title: Crank gearings; Eccentric gearings
F16H21/18 (Crank gearings) appears on 423 US grants and 291 published applications in this corpus.
Search patents in F16H- Granted patents
- 423
- Published applications
- 291
- Assignees
- 230
- Inventors
- 679
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 8 | 0 |
| 1978 | 5 | 0 |
| 1979 | 6 | 0 |
| 1980 | 5 | 0 |
| 1981 | 8 | 0 |
| 1982 | 6 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 8 | 0 |
| 1986 | 6 | 0 |
| 1987 | 11 | 0 |
| 1988 | 2 | 0 |
| 1989 | 9 | 0 |
| 1990 | 11 | 0 |
| 1991 | 6 | 0 |
| 1992 | 10 | 0 |
| 1993 | 10 | 0 |
| 1994 | 9 | 0 |
| 1995 | 4 | 0 |
| 1996 | 15 | 0 |
| 1997 | 8 | 0 |
| 1998 | 9 | 0 |
| 1999 | 7 | 0 |
| 2000 | 6 | 0 |
| 2001 | 8 | 2 |
| 2002 | 5 | 5 |
| 2003 | 5 | 3 |
| 2004 | 5 | 10 |
| 2005 | 4 | 10 |
| 2006 | 4 | 8 |
| 2007 | 9 | 7 |
| 2008 | 1 | 4 |
| 2009 | 2 | 7 |
| 2010 | 3 | 5 |
| 2011 | 3 | 6 |
| 2012 | 3 | 8 |
| 2013 | 5 | 17 |
| 2014 | 6 | 17 |
| 2015 | 14 | 13 |
| 2016 | 13 | 12 |
| 2017 | 11 | 13 |
| 2018 | 12 | 32 |
| 2019 | 23 | 18 |
| 2020 | 20 | 31 |
| 2021 | 24 | 8 |
| 2022 | 15 | 23 |
| 2023 | 14 | 9 |
| 2024 | 16 | 13 |
| 2025 | 13 | 5 |
| 2026 | 5 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
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- Linear drive assembly28 Jul 2026US 12,692,929 B2Kerr Machine Co.
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- Hedge trimmer20 Jan 2026US 12,527,262 B2Techtronic Cordless GP
- Shift apparatus1 Oct 2026US 2026/0298327 A1Aisin Corporation
- Mechanical device for connecting rods, levers and pistons20 Aug 2026US 2026/0243334 A1
- Hypocycloidal mechanism6 Aug 2026US 2026/0226966 A1
- Transmission device for dentate structure26 Feb 2026US 2026/0055805 A1Fivegrand International Co., Ltd.
- Linear drive assembly12 Feb 2026US 2026/0043394 A1Kerr Machine Co.
Most cited
By later US patents
- Reciprocating machine178US 5,762,480 A1998
- Liquid nitrogen pump82US 4,494,415 AHydra-Rig, Inc. · 1985
- Device for the reciprocating linear drive of a part76US 4,642,839 A1987
- Counterbalanced reciprocating mechanism60US 5,079,844 AMilwaukee Electric Tool Corporation · 1992
- Adjustable stroke mechanism for a scotch yoke assembly58US 6,357,125 B1S-B Power Tool Company · 2002