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| Number | Title | Issue Date |
| 4633576 | Method of producing armature winding and apparatus therefor A method of and an apparatus for producing an armature winding of a flat type motor is disclosed having a motor, a flyer rotated by the motor for feeding a wire for the armature winding out of a nozzle thereof, a bobbin member for winding the wire fed out... | 01/06/1987 |
| 4251796 | Slide-type potentiometer A slide-type potentiometer for speed control of electric motors under control of a foot-pedal actuator mechanism comprising an actuating rod reciprocatably movable in the longitudinal directions thereof, a spring member for urging the actuating rod in one... | 02/17/1981 |
| 4246521 | DC Motor speed control system There is provided a DC motor speed control system comprising a main motor circuit which supplies a motor current from an AC source through a full-wave rectifying circuit and a semiconductor element having a control electrode to a DC motor, a manually vari... | 01/20/1981 |
| 4168455 | Motor speed control system A speed control system for a motor comprising a main motor circuit supplying motor current to the motor from an A.C. power source through a semiconductor element provided with a control electrode, trigger voltage supplying means supplying trigger voltage ... | 09/18/1979 |
| 4143605 | Motor driven sewing machine A motor driven sewing machine comprises pulse generator means for generating a first pulse associated with the first predetermined angular position and a second pulse associated with the second predetermined angular position of the main-shaft of the machi... | 03/13/1979 |
| 4142472 | Control apparatus for an electrically driven sewing machine with stitch pattern producing device A control apparatus for an electrically driven sewing machine with stitch pattern producing means comprises an electric signal generator for generating an electric signal related to at least one predetermined angular position of a main shaft of the sewing... | 03/06/1979 |
