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:
Nov. 18, 2025
Filed:
Oct. 20, 2023
Applicant:
Trane International Inc., Davidson, NC (US);
Inventor:
Eric S. Mlsna, Cashton, WI (US);
Assignee:
TRANE INTERNATIONAL INC., Davidson, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04C 29/02 (2006.01); F04C 18/02 (2006.01); F25B 31/00 (2006.01); F04C 23/00 (2006.01);
U.S. Cl.
CPC ...
F04C 29/023 (2013.01); F04C 18/0215 (2013.01); F04C 29/025 (2013.01); F25B 31/002 (2013.01); F04C 23/008 (2013.01); F04C 2240/50 (2013.01); F04C 2240/60 (2013.01); F04C 2240/603 (2013.01); F04C 2240/809 (2013.01);
Abstract
A compressor includes a lubricant pump and a shaft having a lubricant vent extending through the shaft. The vent has an outlet, which can be provided below a stator-rotor assembly of a motor of the compressor. The shaft can be used in a variable speed compressor to convey excess lubricant when the pump is over-supplying lubricant due to operation at speeds greater than the minimum speed. The vent can be positioned at a center of the shaft. The outlet of the vent can direct gas and/or lubricant onto windings of the stator so as to provide cooling.