H02K 16/005
Machines with only rotors
Official title: {Machines with only rotors, e.g. counter-rotating rotors (DC commutator machines or universal AC/DC commutator motors having a rotating armature and a rotating excitation field H02K23/60)}
H02K16/005 (Machines with only rotors) appears on 121 US grants and 138 published applications in this corpus.
Search patents in H02K- Granted patents
- 121
- Published applications
- 138
- Assignees
- 82
- Inventors
- 275
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 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 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 4 | 0 |
| 2003 | 0 | 3 |
| 2004 | 2 | 1 |
| 2005 | 3 | 4 |
| 2006 | 2 | 6 |
| 2007 | 0 | 2 |
| 2008 | 2 | 6 |
| 2009 | 4 | 3 |
| 2010 | 4 | 7 |
| 2011 | 5 | 5 |
| 2012 | 4 | 7 |
| 2013 | 7 | 9 |
| 2014 | 1 | 3 |
| 2015 | 4 | 10 |
| 2016 | 8 | 7 |
| 2017 | 3 | 5 |
| 2018 | 8 | 13 |
| 2019 | 6 | 5 |
| 2020 | 6 | 7 |
| 2021 | 4 | 4 |
| 2022 | 7 | 11 |
| 2023 | 7 | 5 |
| 2024 | 7 | 7 |
| 2025 | 7 | 5 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Inertia flywheel assembly and system thereof8 Sep 2026US 12,729,754 B2Infiniforce, Inc.
- Water dispenser for pets16 Jun 2026US 12,653,149 B2Shenzhen Cheerble Technology Co., Ltd.
- Drive unit for means of locomotion simultaneously drivable by human muscular strength and electric motors26 May 2026US 12,637,173 B2Killwatt GmbH
- Energy conversion device, associated systems and methods24 Mar 2026US 12,587,065 B2GIG Energy LLC
- Generator13 Jan 2026US 12,525,859 B2
- Water dispenser for pets17 Sep 2026US 2026/0271875 A1Shenzhen Cheerble Technology Co., Ltd.
- Energy conversion device, associated systems and methods23 Jul 2026US 2026/0213616 A1GIG Energy LLC
- Method and device for converting wind energy into electrical energy21 May 2026US 2026/0139657 A1SkySails Power GmbH
- Counter-rotating differential electric motor assembly slip ring assembly31 Jul 2025US 2025/0246968 A1Cr Flight L.L.C.
- Power generating device10 Jul 2025US 2025/0226727 A1Coplus Inc.
Most cited
By later US patents
- Wind turbine-generator61US 4,291,233 AWestinghouse Electric Corp. · 1981
- Line dispensing device with eddy current braking for use with climbing and evacuation53US 8,490,751 B2Holmes Solutions Limited · 2013
- Power tool with a light for illuminating a workpiece51US 8,317,350 B2Black & Decker Inc. · 2012
- Plant, generator and propeller element for generating energy from watercurrents49US 7,105,942 B2Hydra Tidal Energy Technology AS · 2006
- Dual-mode counter-rotating-to-traditional electric motor and system47US 8,531,072 B2E-Wish Technology, LLC · 2013