F04C 14/223
Using a movable cam
Official title: {using a movable cam}
F04C14/223 (Using a movable cam) appears on 363 US grants and 372 published applications in this corpus.
Search patents in F04C- Granted patents
- 363
- Published applications
- 372
- Assignees
- 128
- Inventors
- 528
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 7 | 0 |
| 1986 | 2 | 0 |
| 1987 | 7 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 5 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 8 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 4 |
| 2002 | 10 | 12 |
| 2003 | 11 | 8 |
| 2004 | 11 | 11 |
| 2005 | 4 | 12 |
| 2006 | 4 | 4 |
| 2007 | 4 | 7 |
| 2008 | 4 | 20 |
| 2009 | 4 | 27 |
| 2010 | 11 | 21 |
| 2011 | 13 | 10 |
| 2012 | 17 | 15 |
| 2013 | 26 | 28 |
| 2014 | 9 | 18 |
| 2015 | 20 | 36 |
| 2016 | 18 | 27 |
| 2017 | 30 | 22 |
| 2018 | 25 | 20 |
| 2019 | 14 | 11 |
| 2020 | 12 | 25 |
| 2021 | 8 | 9 |
| 2022 | 16 | 9 |
| 2023 | 14 | 7 |
| 2024 | 7 | 6 |
| 2025 | 4 | 0 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
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Most cited
By later US patents
- Reduced rotor assembly diameter vane pump47US 7,997,882 B2MAGNA Powertrain AG & Co KG · 2011
- Convertible pump servo-valve control46US 4,348,159 ARexnord Inc. · 1982
- Variable displacement pump having a changeover value for a pressure chamber45US 5,518,380 AJidosha Kiki Co., Ltd. · 1996
- Variable capacity type vane pump with a variable restriction orifice37US 5,141,418 AAtsugi Unisia Corporation · 1992
- Variable displacement pump having throttled control passages37US 5,562,432 AJidosha Kiki Co., Ltd. · 1996