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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 4356371 B1

PDFFull Text
Date of Patent:
Oct. 26, 1982

Filed:

Nov. 10, 1980

Small load detection by comparison between input and output parameters

Applicant:
Inventors:

Mitsuyuki Kiuchi, Minoo, JP;

Takumi Mizukawa, Neyagawa, JP;

Hideyuki Kominami, Takatsuki, JP;

Kenji Hattori, Amagasaki, JP;

Assignee:

Matsushita Electric Industrial Company, Limited, Osaka, JP;

Attorney:

Lowe, King, Price & Becker

Primary Examiner:

B A Reynolds

Assistant Examiner:

Philip H Leung

Int. Cl.
CPC ...
H05B / ; H05B / ;
U.S. Cl.
CPC ...
219 1077 ; 219 / ; 363 97 ; 363 21 ; 323277 ;
Abstract

An induction heat cooking apparatus includes an inverter which generates ultrasonic frequency energy for heating a magnetic load by induction, and a small load detection circuit. The detection circuit includes a comparator which compares the input and output parameters of the inverter and latches a bistable device when the input power is smaller than the output parameter. The bistable device shuts down the inverter to prevent inadvertently placed small utensil objects from being excessively heated.

Find Patent Forward Citations

Kiuchi, Mitsuyuki. (1982). Small load detection by comparison between input and output parameters (U.S. Patent No. 4356371). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4356371

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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