G05B 2219/41336
Voltage- and frequency-controlled ac motor
Official title: Voltage- and frequency-controlled AC motor
G05B2219/41336 (Voltage- and frequency-controlled ac motor) appears on 5 US grants and 3 published applications in this corpus.
Search patents in G05B- Granted patents
- 5
- Published applications
- 3
- Assignees
- 3
- Inventors
- 13
- Latest grant
- 5 Oct 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1995 | 1 | 0 |
| 1996 | 1 | 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 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 2 |
| 2019 | 0 | 0 |
| 2020 | 1 | 1 |
| 2021 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Motor drive controller for an electric motor drive system5 Oct 2021US 11,137,736 B2General Dynamics—OTS, Inc.
- Vacuum cleaner and control method therefor2 Mar 2021US 10,932,637 B2LG Electronics Inc.
- Electric motor drive system for low-voltage motor7 Jan 2020US 10,528,023 B2General Dynamics—OTS, Inc.
- Velocity regulated, open current loop, variable voltage, variable frequency, linear induction motor drive for an elevator car door23 Apr 1996US 5,509,504 AOtis Elevator Company
- Adaptive digital velocity control loop for a high performance elevator door system with low cost24 Jan 1995US 5,384,439 AOtis Elevator Company
Most cited
By later US patents
- Velocity regulated, open current loop, variable voltage, variable frequency, linear induction motor drive for an elevator car door12US 5,509,504 AOtis Elevator Company · 1996
- Adaptive digital velocity control loop for a high performance elevator door system with low cost6US 5,384,439 AOtis Elevator Company · 1995
- Electric motor drive system for low-voltage motor3US 10,528,023 B2General Dynamics—OTS, Inc. · 2020
- Motor drive controller for an electric motor drive system1US 11,137,736 B2General Dynamics—OTS, Inc. · 2021