F04D 29/04
Shafts or bearings, or assemblies thereof
Official title: Shafts or bearings, or assemblies thereof (specially adapted for elastic fluid pumps F04D29/05)
F04D29/04 (Shafts or bearings, or assemblies thereof) appears on 1,929 US grants and 1,863 published applications in this corpus.
Search patents in F04D- Granted patents
- 1,929
- Published applications
- 1,863
- Assignees
- 857
- Inventors
- 3,410
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 9 | 0 |
| 1978 | 11 | 0 |
| 1979 | 6 | 0 |
| 1980 | 9 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 8 | 0 |
| 1984 | 5 | 0 |
| 1985 | 12 | 0 |
| 1986 | 6 | 0 |
| 1987 | 9 | 0 |
| 1988 | 12 | 0 |
| 1989 | 20 | 0 |
| 1990 | 18 | 0 |
| 1991 | 22 | 0 |
| 1992 | 32 | 0 |
| 1993 | 20 | 0 |
| 1994 | 25 | 0 |
| 1995 | 21 | 0 |
| 1996 | 14 | 0 |
| 1997 | 16 | 0 |
| 1998 | 26 | 0 |
| 1999 | 28 | 0 |
| 2000 | 37 | 0 |
| 2001 | 41 | 10 |
| 2002 | 29 | 23 |
| 2003 | 31 | 28 |
| 2004 | 21 | 31 |
| 2005 | 21 | 37 |
| 2006 | 14 | 29 |
| 2007 | 15 | 40 |
| 2008 | 19 | 44 |
| 2009 | 11 | 35 |
| 2010 | 28 | 37 |
| 2011 | 22 | 57 |
| 2012 | 33 | 48 |
| 2013 | 37 | 75 |
| 2014 | 50 | 77 |
| 2015 | 53 | 79 |
| 2016 | 65 | 102 |
| 2017 | 79 | 134 |
| 2018 | 61 | 113 |
| 2019 | 141 | 140 |
| 2020 | 129 | 123 |
| 2021 | 104 | 159 |
| 2022 | 133 | 120 |
| 2023 | 145 | 105 |
| 2024 | 124 | 77 |
| 2025 | 88 | 73 |
| 2026 | 45 | 67 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fluid pump and method of manufacturing same6 Oct 2026US 12,753,765 B2Temco Industrial, LLC
- Motor assembly for an appliance such as a vacuum cleaner and a vacuum cleaner having same15 Sep 2026US 12,736,058 B2Omachron Intellectual Property Inc.
- Tandem seal pump8 Sep 2026US 12,729,692 B2Ceco Environmental IP Inc.
- Stick pump assembly1 Sep 2026US 12,723,590 B2Milwaukee Electric Tool Corporation
- Liquid supply device with function of reducing generation of particles25 Aug 2026US 12,716,416 B2Samsung Electronics Co., Ltd.
- Vertical turbine pump with roller bearing support1 Oct 2026US 2026/0298243 A1Unted Flo, LLC
- Scalable multi-stage magnetic levitation molten salt pump1 Oct 2026US 2026/0298245 A1Lanzhou University of Technology
- Pump unit1 Oct 2026US 2026/0298248 A1Ebara Corporation
- Submersible electronics module and submersible pump assembly with such24 Sep 2026US 2026/0286964 A1Grundfos Holding A/S
- Magnetic levitation device and pump unit10 Sep 2026US 2026/0266292 A1Levitronix LLC
Most cited
By later US patents
- Single-stage axial flow blood pump493US 4,846,152 ANimbus Medical, Inc. · 1989
- Helifoil pump441US 4,969,865 AAmerican BioMed, Inc. · 1990
- Percutaneous axial flow blood pump422US 4,944,722 ANimbus Medical, Inc. · 1990
- Rotary blood pump405US 6,234,772 B1Kriton Medical, Inc. · 2001
- Method and apparatus for cardiac blood flow assistance397US 5,911,685 AGuidant Corporation · 1999