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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 12560356 B1

PDFFull Text
Date of Patent:
Feb. 24, 2026

Filed:

Mar. 10, 2021

Heater bundles having virtual sensing for thermal gradient compensation

Applicant:

Watlow Electric Manufacturing Company, St. Louis, MO (US);

Inventors:

Mark Everly, St. Charles, MO (US);

Jeremy Quandt, Winona, MN (US);

Steven T. Jystad, St. Louis, MO (US);

Assignee:

Watlow Electric Manufacturing Company, St. Louis, MO (US);

Attorney:

Burris Law, PLLC

Primary Examiner:

Thor S Campbell

Int. Cl.
CPC ...
F24H 15/37 (2022.01); F24H 1/10 (2022.01); F24H 9/20 (2022.01); F24H 15/124 (2022.01); F24H 15/144 (2022.01); F24H 15/20 (2022.01); F24H 15/238 (2022.01); F24H 15/25 (2022.01); H05B 1/02 (2006.01); H05B 3/04 (2006.01); H05B 3/48 (2006.01); H05B 3/82 (2006.01); F24H 15/128 (2022.01); F24H 15/269 (2022.01); F24H 15/421 (2022.01);
U.S. Cl.
CPC ...
F24H 15/37 (2022.01); F24H 1/103 (2013.01); F24H 9/2028 (2013.01); F24H 15/124 (2022.01); F24H 15/144 (2022.01); F24H 15/20 (2022.01); F24H 15/238 (2022.01); F24H 15/25 (2022.01); H05B 1/0283 (2013.01); H05B 3/04 (2013.01); H05B 3/48 (2013.01); H05B 3/82 (2013.01); F24H 15/128 (2022.01); F24H 15/269 (2022.01); F24H 15/421 (2022.01); H05B 2203/014 (2013.01);
Abstract

A system includes a heater bundle having at least one heater assembly with a plurality of heater units. At least one of the heater units defines at least one independently controlled heating zone, and a plurality of power conductors are electrically connected to the heater units. A power supply device includes a controller configured to modulate power to the at least one independently controlled heating zone through the power conductors, and the controller is configured to calculate temperature within the at least one heater unit based on a predefined model and at least one input, and the controller modulates power to the at least one heater unit based on the calculated temperature.

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