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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 12326107 B1

PDFFull Text
Date of Patent:
Jun. 10, 2025

Filed:

Jun. 14, 2024

Dual-purpose heater and fluid flow measurement system

Applicant:

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

Inventors:

Cal Swanson, St. Louis, MO (US);

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

David P. Culbertson, Bristol, WI (US);

James N. Pradun, Lake Geneva, WI (US);

Jeremy J. Quandt, Winona, MN (US);

Mark L. G. Hoven, Winona, MN (US);

Jeremy Ohse, St. Louis, MO (US);

Sanhong Zhang, Wildwood, MO (US);

Assignee:

WATLOW ELECTRIC MANUFACTURING COMPANY, St. Louis, MO (US);

Attorney:

Burris Law, PLLC

Primary Examiner:

Matthew T Largi

Int. Cl.
CPC ...
F01N 9/00 (2006.01); F01N 3/023 (2006.01); F01N 3/027 (2006.01); F01N 3/20 (2006.01); F01N 11/00 (2006.01); F01N 13/00 (2010.01); F02D 41/02 (2006.01); F02D 41/14 (2006.01); F02D 41/22 (2006.01); G01F 1/68 (2006.01); G01F 1/86 (2006.01); G01K 7/16 (2006.01); G01M 15/05 (2006.01); G05D 23/185 (2006.01); G05D 23/24 (2006.01); G05D 23/30 (2006.01); G07C 5/08 (2006.01); H05B 1/02 (2006.01); H05B 3/00 (2006.01); H05B 3/14 (2006.01); H05B 3/18 (2006.01); H05B 3/20 (2006.01); H05B 3/40 (2006.01); F01N 3/021 (2006.01); F01N 3/08 (2006.01); F01N 3/10 (2006.01); H01C 7/02 (2006.01); H01C 7/04 (2006.01);
U.S. Cl.
CPC ...
F01N 9/005 (2013.01); F01N 3/023 (2013.01); F01N 3/027 (2013.01); F01N 3/2006 (2013.01); F01N 3/2013 (2013.01); F01N 9/00 (2013.01); F01N 9/002 (2013.01); F01N 11/002 (2013.01); F01N 11/005 (2013.01); F01N 13/0097 (2014.06); F02D 41/024 (2013.01); F02D 41/1446 (2013.01); F02D 41/1447 (2013.01); F02D 41/22 (2013.01); F02D 41/222 (2013.01); G01F 1/68 (2013.01); G01F 1/86 (2013.01); G01K 7/16 (2013.01); G01M 15/05 (2013.01); G05D 23/185 (2013.01); G05D 23/2401 (2013.01); G05D 23/30 (2013.01); G07C 5/0808 (2013.01); H05B 1/0227 (2013.01); H05B 1/0244 (2013.01); H05B 3/0042 (2013.01); H05B 3/141 (2013.01); H05B 3/18 (2013.01); H05B 3/20 (2013.01); H05B 3/40 (2013.01); F01N 3/021 (2013.01); F01N 3/0814 (2013.01); F01N 3/103 (2013.01); F01N 3/106 (2013.01); F01N 3/2066 (2013.01); F01N 2240/10 (2013.01); F01N 2240/16 (2013.01); F01N 2240/36 (2013.01); F01N 2410/00 (2013.01); F01N 2410/04 (2013.01); F01N 2550/22 (2013.01); F01N 2560/06 (2013.01); F01N 2560/07 (2013.01); F01N 2560/12 (2013.01); F01N 2560/20 (2013.01); F01N 2610/102 (2013.01); F01N 2900/0416 (2013.01); F01N 2900/1404 (2013.01); F01N 2900/1406 (2013.01); F01N 2900/1411 (2013.01); F01N 2900/1602 (2013.01); F02D 2041/1433 (2013.01); F02D 2041/228 (2013.01); F28F 2200/00 (2013.01); G01K 2205/04 (2013.01); H01C 7/02 (2013.01); H01C 7/04 (2013.01); H05B 2203/019 (2013.01); H05B 2203/021 (2013.01); H05B 2203/022 (2013.01); Y02T 10/12 (2013.01); Y02T 10/40 (2013.01);
Abstract

A control system for use in a fluid flow application includes a heater and a control device. The heater includes at least one resistive heating element having a relationship between resistance and temperature defining a non-monotonic curve. The heater is to heat fluid flow. The control device is to determine a flow characteristic of the fluid flow and a temperature of the at least one resistive heating element along the non-monotonic curve between resistance and temperature based on a change in resistance of the at least one resistive heating element.

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