F04C 2240/50
Bearings
F04C2240/50 (Bearings) appears on 827 US grants and 1,009 published applications in this corpus.
Search patents in F04C- Granted patents
- 827
- Published applications
- 1,009
- Assignees
- 365
- Inventors
- 1,792
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 9 | 0 |
| 2001 | 6 | 2 |
| 2002 | 4 | 8 |
| 2003 | 10 | 3 |
| 2004 | 6 | 10 |
| 2005 | 2 | 16 |
| 2006 | 8 | 13 |
| 2007 | 8 | 11 |
| 2008 | 7 | 23 |
| 2009 | 11 | 15 |
| 2010 | 9 | 27 |
| 2011 | 14 | 20 |
| 2012 | 12 | 25 |
| 2013 | 17 | 38 |
| 2014 | 20 | 48 |
| 2015 | 28 | 54 |
| 2016 | 46 | 49 |
| 2017 | 44 | 63 |
| 2018 | 36 | 82 |
| 2019 | 58 | 71 |
| 2020 | 64 | 76 |
| 2021 | 68 | 71 |
| 2022 | 62 | 68 |
| 2023 | 70 | 72 |
| 2024 | 91 | 62 |
| 2025 | 68 | 50 |
| 2026 | 25 | 32 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F04C 2240/56Bearing bushings or details thereofIndexing code197
- F04C 2240/52For assemblies with supports on both sidesIndexing code144
- F04C 2240/54Hydrostatic or hydrodynamic bearing assemblies specially adapted for rotary positive displacement pumpsIndexing code112
- F04C 2240/51For cantilever assembliesIndexing code58
Recent patents
- Process pump with dynamic seal for dry run capability6 Oct 2026US 12,753,757 B2Viking Pump, Inc.
- Pump6 Oct 2026US 12,753,759 B2LG Innotek Co., Ltd.
- Rotary compressor and refrigeration cycle device having the same6 Oct 2026US 12,753,760 B2LG Electronics Inc.
- Scroll compressor with rolling element bearings8 Sep 2026US 12,729,683 B2Aktiebolaget Skf
- Vacuum pump assembly with improved process by-product holding capacity1 Sep 2026US 12,723,588 B2Beijing Grand Hitek. Co., Ltd.
- Multiphase pump of the screw spindle pump type1 Oct 2026US 2026/0298229 A1Leistritz Pumpen GmbH
- Co-rotating scroll compressor24 Sep 2026US 2026/0286960 A1Hillyer Associates, LLC
- Sliding components17 Sep 2026US 2026/0276035 A1Eagle Industry Co., Ltd.
- Displacement machine according to the spiral principle27 Aug 2026US 2026/0251141 A1
- Co-rotating scroll compressor27 Aug 2026US 2026/0251142 A1Kabushiki Kaisha Toyota Jioshokki
Most cited
By later US patents
- Two stage screw type vacuum pump with motor in-between the stages140US 5,846,062 AEbara Corporation · 1998
- Fluid rotating apparatus61US 5,197,861 AMatsushita Electric Industrial Co., Ltd. · 1993
- Scroll compressor bearing lubrication54US 6,082,495 ACopeland Corporation · 2000
- Fluid rotating apparatus with rotor communicating path48US 5,295,798 AMatsushita Electric Industrial Co., Ltd. · 1994
- Anti-wear coatings for scroll compressor wear surfaces43US 9,605,677 B2Emerson Climate Technologies, Inc. · 2017