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.:
Date of Patent:
Apr. 27, 2021
Filed:
Jan. 09, 2018
Jeffery F. Kallenberger, Springfield, MO (US);
James L. E. Meats, Springfield, MO (US);
William S. Hohulin, Springfield, MO (US);
Robert A. Valbracht, Springfield, MO (US);
Rickey W. Jennings, Sparta, MO (US);
Jeffery F. Kallenberger, Springfield, MO (US);
James L. E. Meats, Springfield, MO (US);
William S. Hohulin, Springfield, MO (US);
Robert A. Valbracht, Springfield, MO (US);
Rickey W. Jennings, Sparta, MO (US);
Loren Cook Company, Springfield, MO (US);
Abstract
A fan control system has a fan duct, a fan mounted in the duct, an electronic commutator (EC) motor for driving the fan, and a control system hub for controlling the EC motor. A pressure differential sensing system is mounted in association with duct and feeding a pressure differential signal to the control system hub. An input device mounted on the control system hub for scaling an output signal from a low percent extreme to a high percent extreme and sends that output signal to the EC motor. Wherein the control system hub speeds, slows or switches OFF the EC motor according to the pressure differential signal except that the input device sets a speed limit ceiling on the EC motor.