B25D 2250/281
Double motors
B25D2250/281 (Double motors) appears on 13 US grants and 9 published applications in this corpus.
Search patents in B25D- Granted patents
- 13
- Published applications
- 9
- Assignees
- 11
- Inventors
- 25
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 2 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 2 |
| 2023 | 1 | 0 |
| 2024 | 2 | 3 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rotary power tool24 Mar 2026US 12,583,069 B2Milwaukee Electric Tool Corporation
- Power tool having two motors24 Dec 2024US 12,172,279 B2Hilti Aktiengesellschaft
- Rotary power tool10 Sep 2024US 12,083,642 B2Milwaukee Electric Tool Corporation
- Rotary power tool21 Nov 2023US 11,819,968 B2Milwaukee Electric Tool Corporation
- Hydraulic rotator converter for a hydraulic impact hammer and method6 Jun 2017US 9,670,729 B2JW Tooling, LLC
- Rotary power tool12 Dec 2024US 2024/0408710 A1Milwaukee Electric Tool Corporation
- Rotary power tool1 Feb 2024US 2024/0033871 A1Milwaukee Electric Tool Corporation
- Power tool having two motors11 Jan 2024US 2024/0009822 A1Hilti Aktiengesellschaft
- Power tool having rotary hammer mechanism15 Dec 2022US 2022/0395972 A1Makita Corporation
- Rotary power tool21 Jul 2022US 2022/0226951 A1Milwaukee Electric Tool Corporation
Most cited
By later US patents
- Apparatus for driving a drilling or percussion tool74US 5,113,951 AEmerson Electric Co. · 1992
- Apparatus for driving a drilling or percussion tool54US 5,052,497 AEmerson Electric Co. · 1991
- Hammer drill with separate and interconnectable drive means27US 4,732,218 AHilti Aktiengesellschaft · 1988
- Percussion drill machine25US 4,462,467 AHilti Aktiengesellschaft · 1984
- Drilling device for a rock drill21US 5,415,240 ASIG Schweizerische Industrie-Gesellschaft · 1995