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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 12044449 B1

PDFFull Text
Date of Patent:
Jul. 23, 2024

Filed:

May. 31, 2022

Refrigerant compressor with wear sleeve and lubricant blends for handling debris-laden fluids

Applicant:

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

Inventors:

Michael T. Siegersma, West Salem, WI (US);

Daniel A. Strange, La Crosse, WI (US);

Russell T. Abbott, Caledonia, MN (US);

Todd W. Smith, Onalaska, WI (US);

Elyse M. Sorenson, Stoddard, WI (US);

Morgan Elizabeth Herried Leehey, La Crosse, WI (US);

Curtis E. Everson, La Crosse, WI (US);

Mohammad Akram, Rosemount, MN (US);

Assignee:

TRANE INTERNATIONAL INC., Davidson, NC (US);

Attorney:

HSML P.C.

Primary Examiner:

Ellen M McAvoy

Int. Cl.
CPC ...
F25B 31/00 (2006.01); C10M 101/00 (2006.01); C10M 105/06 (2006.01); C10M 105/38 (2006.01); C10M 107/24 (2006.01); C10M 111/04 (2006.01); C10M 129/10 (2006.01); C10M 129/18 (2006.01); C10M 133/46 (2006.01); C10M 137/04 (2006.01); C10M 141/10 (2006.01); C10M 169/04 (2006.01); F25B 31/02 (2006.01); C10N 30/02 (2006.01); C10N 30/06 (2006.01); C10N 30/10 (2006.01); C10N 30/12 (2006.01); C10N 40/30 (2006.01);
U.S. Cl.
CPC ...
F25B 31/002 (2013.01); C10M 101/00 (2013.01); C10M 105/06 (2013.01); C10M 105/38 (2013.01); C10M 107/24 (2013.01); C10M 111/04 (2013.01); C10M 129/10 (2013.01); C10M 129/18 (2013.01); C10M 133/46 (2013.01); C10M 137/04 (2013.01); C10M 141/10 (2013.01); C10M 169/04 (2013.01); F25B 31/026 (2013.01); C10M 2203/065 (2013.01); C10M 2203/1006 (2013.01); C10M 2207/023 (2013.01); C10M 2207/042 (2013.01); C10M 2207/2835 (2013.01); C10M 2209/043 (2013.01); C10M 2215/30 (2013.01); C10M 2223/041 (2013.01); C10N 2030/02 (2013.01); C10N 2030/06 (2013.01); C10N 2030/10 (2013.01); C10N 2030/12 (2013.01); C10N 2040/30 (2013.01);
Abstract

A compressor including a housing, a shaft configured to be rotated relative to the housing to compress a refrigerant, a motor configured to drive the shaft, a lubrication system configured to supply lubricant to the compressor, and a bearing configured to support the shaft. The shaft includes a wear-resistant sleeve-like treatment on at least a portion of an outer surface of the shaft adjacent the bearing. The lubricant is a lubricant blend composition that includes two or more lubricants, the two or more lubricants including a first lubricant and a second lubricant. The first lubricant is present at a higher volume percentage than the second lubricant, and the first lubricant includes a higher viscosity than the second lubricant.

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