3732476 is referenced by 5 patents and cites 6 patents.

A switching arrangement for a motor control system for a small appliance such as a blender is provided which includes a housing and a plurality of longitudinally movable, push button-operated switch actuators located therein. Each actuator carries a switch contact which, together with a corresponding set of contacts associated with the housing, forms a control switch. The actuators are adapted to cooperate with a plurality of laterally displaceable blocks to provide positive lock-out of the other actuators when one actuator is depressed unless a further actuator is positively actuated. The control switches operated by the actuators control the energization of the stator windings associated with the motor and a contact located on one of the blocks together with a housing-mounted contact forms a range switch for controlling the connection of a diode into the motor control circuit. The provision of two taps on one stator winding enables a system of eight actuator-operated control switches and the range switch to provide seven motor speeds as well as disconnection of the motor.

Low cost switching arrangement for appliance motor speed control
Application Number
Publication Number
Application Date
May 21, 1971
Publication Date
May 8, 1973
Cairelli Carmen P
McGill Manufacturing Company
H01h 09/26
H01H 13/72
H01H 13/70
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