H02K 27/04
Ac commutator motors or generators having mechanical commutator: having single-phase operation in
Official title: having single-phase operation in series or shunt connection
H02K27/04 (Ac commutator motors or generators having mechanical commutator: having single-phase operation in) appears on 4 US grants and 4 published applications in this corpus.
Search patents in H02K- Granted patents
- 4
- Published applications
- 4
- Assignees
- 3
- Inventors
- 7
- Latest grant
- 24 Jun 2014
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 2 | 0 |
| 2014 | 1 | 0 |
By publication year.
Subgroups
Granted patents
Recent patents
- Variable speed drive system24 Jun 2014US 8,760,089 B2Franklin Electric Co., Inc.
- Electric motor having primary and auxiliary poles and brush gear3 Sep 2013US 8,525,382 B2Johnson Electric S. A.
- Electric motor26 Mar 2013US 8,405,273 B2Johnson Electric S. A.
- Commutator motor18 May 2004US 6,737,779 B2Matsushita Electric Works, Ltd.
Most cited
By later US patents
- Variable speed drive system19US 8,760,089 B2Franklin Electric Co., Inc. · 2014
- Electric motor having primary and auxiliary poles and brush gear3US 8,525,382 B2Johnson Electric S. A. · 2013
- Commutator motor2US 6,737,779 B2Matsushita Electric Works, Ltd. · 2004
- Electric motor1US 8,405,273 B2Johnson Electric S. A. · 2013