B24B 41/044
Grinding spindles with magnetic or electromagnetic bearings
Official title: {Grinding spindles with magnetic or electromagnetic bearings; Features related thereto (electric motors with magnetic bearings H02K7/09)}
B24B41/044 (Grinding spindles with magnetic or electromagnetic bearings) appears on 24 US grants and 18 published applications in this corpus.
Search patents in B24B- Granted patents
- 24
- Published applications
- 18
- Assignees
- 13
- Inventors
- 50
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 6 |
| 2023 | 2 | 0 |
| 2024 | 3 | 5 |
| 2025 | 2 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Power tool14 Apr 2026US 12,600,022 B2C. & E. Fein GmbH
- Hand-held power tool as well as axial holding arrangement and working element for such a power tool22 Jul 2025US 12,365,075 B2
- High-power motor for a body-grip power tool25 Mar 2025US 12,261,497 B2Black & Decker Inc.
- Circuit board assembly for compact brushless motor9 Apr 2024US 11,955,863 B2Black & Decker Inc.
- Compact brushless motor including in-line terminals16 Jan 2024US 11,876,424 B2Black & Decker Inc.
- High-power motor for a body-grip power tool3 Jul 2025US 2025/0219493 A1Black & Decker Inc.
- Hand-held power tool, axial holding arrangement and polishing pad for such a power tool24 Oct 2024US 2024/0351160 A1
- Hand-held power tool as well as axial holding arrangement and working element for such a power tool24 Oct 2024US 2024/0351179 A1
- Power tool5 Sep 2024US 2024/0293923 A1C. & E. Fein GmbH
- Circuit board assembly for compact brushless motor22 Aug 2024US 2024/0283319 A1Black & Decker Inc.
Most cited
By later US patents
- Tool holding spindle assembly particularly for a grinding machine68US 4,180,946 A1980
- Machining apparatus having a main spindle supported by magnetic bearings58US 5,027,280 ASeiko Seiki Kabushiki Kaisha · 1991
- Internal grinder32US 4,956,945 ASeiko Seiki Kabushiki Kaisha · 1990
- Spindle assembly for force controlled polishing21US 6,083,082 ALam Research Corporation · 2000
- Machine tool19US 5,562,528 AKoyo Seiko Co., Ltd. · 1996