Closed-loop microwave popcorn control

Details Closed-loop microwave popcorn control Closed-loop microwave popcorn control

1987-10-26

1989-10-10

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1055B, 219 1055E, 219506, 993237, 99DIG14, 426234, 426243, H05B 668

Patent

active

048734098

ABSTRACT:
A closed-loop control for sensing the completion of popcorn popping in a microwave oven and automatically shutting down the oven. A sensor is acoustically coupled to the microwave oven cavity and provides an electrical signal to an amplifier and filter. The amplified and filtered signal is processed by a pop detector which includes an integrator and shut-down command generator responsive to a decreasing rate of popping to shut the oven off. The integrator provides a pre-pop timer function to maintain the oven on until popping commences.

REFERENCES:
patent: 4028519 (1977-06-01), De Wesse et al.
patent: 4347418 (1982-08-01), Nobue et al.
patent: 4381439 (1983-04-01), Miyazawa et al.
patent: 4602147 (1986-07-01), Gell
Act II Microwave Popcorn, Package Instruction.
Orville Redenbacher's Gourmet Microwave Popping Corn.
Orville Redenbacher's Gourmet Microwave Popping Corn (Alternative packaging).
Betty Crocker Pop-Secret Microwave Popcorn.
Planters Premium Select Microwave Popcorn.
Pillsbury Microwave Popcorn.

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