F04C 2240/603
With internal channels for fluid distribution
Official title: with internal channels for fluid distribution, e.g. hollow shaft
F04C2240/603 (With internal channels for fluid distribution) appears on 326 US grants and 263 published applications in this corpus.
Search patents in F04C- Granted patents
- 326
- Published applications
- 263
- Assignees
- 105
- Inventors
- 638
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 7 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 6 | 0 |
| 1994 | 5 | 0 |
| 1995 | 7 | 0 |
| 1996 | 9 | 0 |
| 1997 | 5 | 0 |
| 1998 | 9 | 0 |
| 1999 | 6 | 0 |
| 2000 | 11 | 0 |
| 2001 | 22 | 6 |
| 2002 | 19 | 19 |
| 2003 | 9 | 2 |
| 2004 | 2 | 7 |
| 2005 | 3 | 3 |
| 2006 | 3 | 1 |
| 2007 | 1 | 3 |
| 2008 | 2 | 2 |
| 2009 | 0 | 5 |
| 2010 | 5 | 8 |
| 2011 | 3 | 9 |
| 2012 | 3 | 7 |
| 2013 | 2 | 12 |
| 2014 | 9 | 11 |
| 2015 | 14 | 5 |
| 2016 | 8 | 5 |
| 2017 | 6 | 14 |
| 2018 | 9 | 16 |
| 2019 | 8 | 13 |
| 2020 | 18 | 28 |
| 2021 | 11 | 22 |
| 2022 | 20 | 21 |
| 2023 | 19 | 16 |
| 2024 | 28 | 12 |
| 2025 | 16 | 11 |
| 2026 | 1 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- External gear pump10 Feb 2026US 12,546,313 B2
- Electric dual fluid pump having a single motor23 Dec 2025US 12,504,011 B2GHSP, Inc.
- Lubrication system for compressors18 Nov 2025US 12,473,920 B2Trane International Inc.
- Electric pump system and method with hollow shaft and temperature sensor4 Nov 2025US 12,460,635 B2Tesla, Inc.
- Scroll compressor4 Nov 2025US 12,460,638 B2LG Electronics Inc.
- Electric pump system and method with hollow shaft and temperature sensor18 Jun 2026US 2026/0168491 A1Tesla, Inc.
- Co-rotating scroll compressor28 May 2026US 2026/0146606 A1Kabushiki Kaisha Toyota Jidoshokki
- Co-rotating scroll compressor21 May 2026US 2026/0139673 A1Kabushiki Kaisha Toyota Jidoshokki
- Linear actuator assembly and system21 May 2026US 2026/0139694 A1Project Phoenix, LLC
- Electric pump5 Feb 2026US 2026/0036126 A1Zhejiang Sanhua Automotive Components Co., Ltd.
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