H02K 31/04
Acyclic motors or generators, i.e. dc machines having drum or disc armatures
Official title: with at least one liquid-contact collector
H02K31/04 (Acyclic motors or generators, i.e. dc machines having drum or disc armatures) appears on 34 US grants and 2 published applications in this corpus.
Search patents in H02K- Granted patents
- 34
- Published applications
- 2
- Assignees
- 12
- Inventors
- 34
- Latest grant
- 11 Apr 2000
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 7 | 0 |
| 1980 | 6 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Flywheel with electrically controlled input and output11 Apr 2000US 6,049,150 A
- Homopolar dynamoelectric machine2 Jan 1996US 5,481,149 AToyota Jidosha Kabushiki Kaisha
- Liquid metal electrical contact compositions25 Jan 1994US 5,281,364 AFinch Limited
- Unipolar motor and mechanical conversion system and method7 Feb 1989US 4,803,391 AGenedyne Corp.
- Liquid metal collector for acyclic generator30 Aug 1988US 4,767,957 AGeneral Electric Company
Most cited
By later US patents
- Homopolar dynamoelectric machine22US 5,481,149 AToyota Jidosha Kabushiki Kaisha · 1996
- Permeable mesh current collector for DC machines15US 4,266,154 AGeneral Electric Company · 1981
- Liquid metal electrical contact compositions14US 5,281,364 AFinch Limited · 1994
- Pumped double-pass return liquid metal collector for acyclic machines12US 3,989,968 AGeneral Electric Company · 1976
- Pumped single-pass return liquid metal collector with reversed current path for acyclic machines12US 4,027,184 AGeneral Electric Company · 1977