F04C 2240/60
Shafts
F04C2240/60 (Shafts) appears on 801 US grants and 853 published applications in this corpus.
Search patents in F04C- Granted patents
- 801
- Published applications
- 853
- Assignees
- 318
- Inventors
- 1,697
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 7 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 7 | 0 |
| 1994 | 6 | 0 |
| 1995 | 11 | 0 |
| 1996 | 10 | 0 |
| 1997 | 6 | 0 |
| 1998 | 10 | 0 |
| 1999 | 7 | 0 |
| 2000 | 14 | 0 |
| 2001 | 24 | 6 |
| 2002 | 21 | 20 |
| 2003 | 10 | 6 |
| 2004 | 3 | 16 |
| 2005 | 3 | 10 |
| 2006 | 9 | 9 |
| 2007 | 5 | 10 |
| 2008 | 6 | 19 |
| 2009 | 3 | 12 |
| 2010 | 15 | 18 |
| 2011 | 7 | 29 |
| 2012 | 10 | 19 |
| 2013 | 14 | 29 |
| 2014 | 23 | 36 |
| 2015 | 26 | 21 |
| 2016 | 21 | 36 |
| 2017 | 29 | 79 |
| 2018 | 33 | 52 |
| 2019 | 60 | 46 |
| 2020 | 48 | 77 |
| 2021 | 41 | 78 |
| 2022 | 79 | 75 |
| 2023 | 71 | 40 |
| 2024 | 69 | 40 |
| 2025 | 49 | 43 |
| 2026 | 18 | 27 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Dual oil pump with centrifugal shifter6 Oct 2026US 12,753,804 B1Schaeffler Technologies AG & Co. KG
- Scroll compressors including ring-shaped counterweight assemblies1 Sep 2026US 12,723,587 B2Copeland Corporation
- Eccentric screw pump with magnetic coupling18 Aug 2026US 12,710,041 B2NETZSCH Pumpen & Systeme GmbH
- Screw pump and its components4 Aug 2026US 12,698,769 B2Illinois Tool Works Inc.
- Variable-speed refrigerating scroll compressor with an oil flow regulating device28 Jul 2026US 12,692,864 B2Danfoss Commercial Compressors
- Rotary piston internal combustion engines1 Oct 2026US 2026/0298091 A1Compound Rotary Engines Limited
- Vacuum pump1 Oct 2026US 2026/0298238 A1Pfeiffer Vacuum GmbH
- Scroll vacuum pump and scroll vacuum pump system1 Oct 2026US 2026/0298241 A1Pfeiffer Vacuum Technology AG
- Scroll fluid machine with elastic member27 Aug 2026US 2026/0251140 A1Anest Iwata Corporation
- Eccentric Screw Pump Device, Pump System, Discharge System and Use13 Aug 2026US 2026/0235121 A1Putzmeister Engineering GmbH
Most cited
By later US patents
- Scroll-type machine with axially compliant mounting226US 4,877,382 ACopeland Corporation · 1989
- Compressor diagnostic and recording system148US 6,406,265 B1Scroll Technologies · 2002
- Scroll machine with asymmetrical bleed hole131US 6,293,767 B1Copeland Corporation · 2001
- Scroll machine with capacity modulation128US 6,176,686 B1Copeland Corporation · 2001
- Scroll-type machine with axially compliant mounting122US 4,767,293 ACopeland Corporation · 1988