F04C 2/34
Having the movement defined in groups f04c2/08 or f04c2/22 and relative reciprocation
Official title: having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
F04C2/34 (Having the movement defined in groups f04c2/08 or f04c2/22 and relative reciprocation) appears on 930 US grants and 983 published applications in this corpus.
Search patents in F04C- Granted patents
- 930
- Published applications
- 983
- Assignees
- 373
- Inventors
- 1,546
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 5 | 0 |
| 1984 | 6 | 0 |
| 1985 | 15 | 0 |
| 1986 | 9 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 7 | 0 |
| 1992 | 4 | 0 |
| 1993 | 6 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 8 | 0 |
| 1997 | 9 | 0 |
| 1998 | 10 | 0 |
| 1999 | 9 | 0 |
| 2000 | 19 | 0 |
| 2001 | 13 | 7 |
| 2002 | 26 | 16 |
| 2003 | 21 | 18 |
| 2004 | 12 | 20 |
| 2005 | 10 | 26 |
| 2006 | 13 | 19 |
| 2007 | 11 | 23 |
| 2008 | 16 | 38 |
| 2009 | 16 | 51 |
| 2010 | 21 | 36 |
| 2011 | 26 | 28 |
| 2012 | 30 | 33 |
| 2013 | 39 | 55 |
| 2014 | 22 | 50 |
| 2015 | 44 | 80 |
| 2016 | 51 | 71 |
| 2017 | 66 | 72 |
| 2018 | 61 | 74 |
| 2019 | 42 | 38 |
| 2020 | 45 | 54 |
| 2021 | 34 | 42 |
| 2022 | 38 | 46 |
| 2023 | 49 | 31 |
| 2024 | 36 | 21 |
| 2025 | 25 | 22 |
| 2026 | 12 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fluid pump for an aircraft turbomachine, lubrication circuit and aircraft turbomachine6 Oct 2026US 12,753,758 B2Safran Aero Boosters SA
- Sliding vane pump or turbine having track followers11 Aug 2026US 12,704,069 B2Amorphic Tech Ltd
- Use of a composition as refrigerant in compressor, compressor, and refrigeration cycle apparatus28 Jul 2026US 12,692,425 B2Daikin Industries, Ltd.
- Pump assembly7 Jul 2026US 12,674,453 B2Sumitomo Electric Sintered Alloy, Ltd.
- Adding system for fire-extinguishing units26 May 2026US 12,636,532 B2Firedos GmbH
- Vane pump10 Sep 2026US 2026/0266287 A1KYB Corporation
- Pump assembly2 Jul 2026US 2026/0185523 A1Sumitomo Electric Sintered Alloy, Ltd.
- Lubrication system for an internal combustion engine25 Jun 2026US 2026/0176992 A1DAF Trucks N. V.
- Sinusoidal pump with blocking slide, and production method14 May 2026US 2026/0132788 A1Watson Marlow GmbH - MasoSine Division
- Electric compressor30 Apr 2026US 2026/0117770 A1Kabushiki Kaisha Toyota Jidoshokki
Most cited
By later US patents
- Overheat protection for fluid pump89US 6,837,688 B2Standex International Corporation · 2005
- Reverse osmosis with free rotor booster pump74US 4,973,408 A1990
- Pump with conveying chamber formed in outer rotor surface55US 7,674,100 B2PDD Innovations Ltd. · 2010
- Rotary pump having a hydraulic intermediate capacity with first and second connections48US 6,817,847 B2LuK Fahrzeug-Hydraulik GmbH & Co.KG · 2004
- Reduced rotor assembly diameter vane pump47US 7,997,882 B2MAGNA Powertrain AG & Co KG · 2011