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.

Date of Patent:
Jul. 14, 2026

Filed:

Oct. 20, 2023
Applicant:

Trane International Inc., Davidson, NC (US);

Inventors:

Eric S. Mlsna, Cashton, WI (US);

Jonathan Rollier, Chanhassen, MN (US);

Assignee:

Trane International Inc., Davidson, NC (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05D 9/00 (2006.01); G01F 23/00 (2022.01); G01F 23/24 (2006.01);
U.S. Cl.
CPC ...
G05D 9/00 (2013.01); G01F 23/0007 (2013.01); G01F 23/24 (2013.01);
Abstract

Devices, systems, and methods are disclosed for reducing leakage current in compressors, such as for heating, ventilation, and air conditioning, and refrigeration (HVAC/HVACR) systems. Several embodiments include a sensor for measuring the isolation resistance of an enclosure of a compressor. The sensor can be electronically coupled to a controller that is configured to activate a heating element mechanically coupled to the enclosure when the controller determines that the isolation resistance measured by the sensor falls indicates that the compressor is at risk of faulting. Activating the heating element causes the refrigerant mixed within the oil to evaporate, which lowers the liquid level within the compressor.


Find Patent Forward Citations

Mlsna, Eric. (2026). Devices, systems, and methods for controlling liquid levels using isolation resistance (U.S. Patent No. 12681509). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12681509

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

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