Patent ID: 11864691
Assignee: SUNBEAM PRODUCTS, INC.
Field: Furniture, games (Other fields)
Classification: CPC A | IPC A

Claim 17:
18. A food processor comprising:
a base assembly having a motor positioned therewithin;
a blender jar selectively engageable with the base assembly, the blender jar including a plurality of agitator blades and an agitator shaft for connection to the motor positioned within the base assembly;
a lid member for selectively closing access to the blender jar;
at least one controller and memory for storing at least one operating program for controlling the operation of the motor in a forward and reverse direction;
at least one current sensor coupled to the controller for measuring the current being utilized by the motor at any particular time, said at least one current sensor outputting a signal to the controller indicative of the current being utilized by the motor;
at least one speed sensor coupled to the controller for measuring the speed of the motor at any particular time, the at least one speed sensor outputting a signal to the controller indicative of the speed of the motor;
said at least one controller comparing measured current and speed values and measured changes in the current and speed values over a predetermined period of time from said at least one current sensor and said at least one speed sensor to predetermined stored values in memory for current and speed values and predetermined stored values in memory for changes in the current and speed values over the predetermined period of time during the operation of said at least one operating program in order to determine if a cavitation situation exists within the blender jar, the at least one controller outputting a signal to control the operation of the motor in response to the signals received from said at least one current sensor and said at least one speed sensor;
wherein the controller is configured to determine the resistance placed on the at least one agitator blade based on signals from the current and speed sensors, and to compare the determined resistance with predetermined resistance values corresponding to light, medium or heavy loads to classify the load within the blender jar accordingly.