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:
Oct. 13, 2026
Filed:
Oct. 12, 2023
Carrier Corporation, Palm Beach Gardens, FL (US);
Kanna Selvakani, Theni, IN;
CARRIER CORPORATION, Palm Beach Gardens, FL (US);
Abstract
A system for predicting failure of an HVAC fan motor unit includes a fan motor controller for measuring a time duration between reception of the deactivation signal from the control circuitry and speed of a fan reaching zero rotations per minute (RPM). The measured time duration is then transmitted to the control circuitry. The control circuitry stores a set of test time durations characterizing a working fan motor unit. During operation, the control circuitry periodically transmits an activation signal or a deactivation signal to the fan motor controller. The control circuitry receives and compares the measured time duration from the fan motor controller with a test time duration to generate a delta time duration variable. Subsequently, the control circuitry determines if the generated delta time duration variable exceeds a threshold time duration and predicts a failure time duration for the generated delta time duration to reach the threshold time duration.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile