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Class Information
Number: 318/776
Name: Electricity: motive power systems > Induction motor systems > Primary circuit control > Plural speed > Pole changing > Single phase motor > Entire primary running winding energized for each running speed
Description: Subject matter wherein the means connected to the windings or winding portions electrically rearranged the windings or winding portions to produce a different number of poles and energize all of the windings or winding portions in all running speeds of the motor.

Patents under this class:

Patent Number Title Of Patent Date Issued
8373378 Systems and method for motor speed control Feb. 12, 2013
8115443 PSC motor with 4/6 pole common windings Feb. 14, 2012
7911175 Two speed induction motor with tapped auxiliary winding Mar. 22, 2011
7262579 Inverted electric motor and method for using such to propel a vehicle Aug. 28, 2007
7218075 Electronic circuit for starting a single phase induction motor May. 15, 2007
6707214 PSC motor having a 4/6-pole common winding and having an additional 4-pole winding Mar. 16, 2004
6255755 Single phase three speed motor with shared windings Jul. 3, 2001
6175209 2/4-pole PSC motor with shared main winding and shared auxiliary winding Jan. 16, 2001
6169383 Self adapting motor controller Jan. 2, 2001
6121746 Speed reduction switch Sep. 19, 2000
5867005 AC motor winding circuit Feb. 2, 1999
5825111 Single-phase induction motor 4/6 pole common winding connection with magnetic motive force symmetrically distributed Oct. 20, 1998
5818195 Dual state controller for brushless electric motors Oct. 6, 1998
5757162 Method and apparatus for operating an electric induction motor with a long and lossy extension cord May. 26, 1998
5614799 Brushless direct current motor having adjustable motor characteristics Mar. 25, 1997
5077512 Energy conserving electric motor control method and apparatus Dec. 31, 1991
4906911 Electrical machine driven by a pulse-controlled a.c. converter Mar. 6, 1990
4477760 Continuous pole amplitude modulated electric machines Oct. 16, 1984
4476422 Single phase four pole/six pole motor Oct. 9, 1984
4473788 Single phase two pole/six pole motor Sep. 25, 1984
4463303 Six pole/eight pole single-phase motor Jul. 31, 1984
4322665 Two speed single phase motor Mar. 30, 1982
4103212 Two speed single phase induction motor Jul. 25, 1978
4064420 Control system for pole-changing-motor-driven compressor Dec. 20, 1977
3973154 Electric motors Aug. 3, 1976

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