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Walt Disney was no Mickey Mouse inventor. He devised a serious animation camera which he patented. With the device, his company created "Snow White".
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| Number | Title | Issue Date |
| 7071643 | Dual speed quad brush two pole motor system A motor system includes four brushes electrically connected to a rotor. A stator includes two magnetic poles. A circuit selectively rotates the rotor at a first speed by applying a first voltage to a first of the brushes and a second voltage to a second of the brush... | 07/04/2006 |
| 5577155 | Rectifier based motor speed/brake control A motor speed controller for use with dc motors, such as found in model (slot) cars, is provided by a plurality of pairs of oppositely-poled voltage-sensitive threshold conduction devices which are selectively connected so as to be controllably inserted b... | 11/19/1996 |
| 4992709 | Switching circuit providing adjustable capacitive series voltage dropping circuit with a fractional horsepower motor A control circuit for a fractional horsepower fan motor connected between hot and neutral wires in and AC circuit is shown. The control circuit includes two or more duplicate branches. Each branch is serially connected, and each branch includes a triac, s... | 02/12/1991 |
| 4506198 | Trigger speed control switch A variable resistor (44) and conductors (36,38,42,46) for the speed control circuit are printed on a flexible insulating film (28) held against a flat heat sink (24) in an upright plane by a deflected conductive tab (34) protruding within an aperture (30)... | 03/19/1985 |
| 4465958 | Motor speed control circuit A control circuit for a direct current trolling motor powered by a storage battery includes a transistor placed in series between the motor and the battery, a selector switch, and one or more voltage regulating devices such as zener diodes. The selector s... | 08/14/1984 |
| 4406982 | DC Motor control circuit A DC motor control circuit including a DC voltage source, a DC motor electrically connected in series with the voltage source and a controllable current control device electrically connected totally in series with the voltage source and the motor. A rheos... | 09/27/1983 |
| 4264847 | Speed control for a four pole motor A four pole d.c. motor speed control is provided by connecting two of the opposed brushes together to ground and the intermediate brushes to separate terminals of a switch means which in energized positions connects a grounded power supply to at least one... | 04/28/1981 |
| 4232258 | Speed control apparatus for electric motor A direct current obtained by rectifying an alternating current voltage by means of a diode bridge circuit is applied to a direct current motor connected to the diode bridge circuit. Use is made of the fact that the voltage developed across the diode bridg... | 11/04/1980 |
| 4132933 | Electromechanical chopper for speed control of battery powered devices A chopper for adjustably controlling the average value of the voltage supplied from a D.C. battery source to a motor load for adjustable speed control. The chopper comprises manually-operable spring-biasing means for applying force to close a contact to e... | 01/02/1979 |
| 3940671 | Control circuit for amusement device An operating control circuit for an amusement device of the simulated driving type, wherein the speed of the simulated vehicle is regulated by an operator-controlled accelerator and a gear shift, each electrically arranged to cooperate and interrelate so ... | 02/24/1976 |
