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:
Sep. 06, 2022
Filed:
Jun. 21, 2019
Applicant:
Danfoss A/s, Nordborg, DK;
Inventors:
Zili Sun, Tallahassee, FL (US);
Ruiguo Gao, Tallahassee, FL (US);
Stefan Walshe, Dublin, IE;
Aida Rezaei, Tallahassee, FL (US);
Dongkoo Shin, Tallahassee, FL (US);
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/043 (2006.01); F04D 29/048 (2006.01); F25B 31/02 (2006.01);
U.S. Cl.
CPC ...
F04D 29/043 (2013.01); F04D 29/048 (2013.01); F25B 31/026 (2013.01);
Abstract
This disclosure relates to a compressor having a partially hollow shaft. In particular, an exemplary compressor includes a shaft which is partially hollow, and at least one impeller rotatably coupled to the shaft. The compressor may be a refrigerant compressor used in a heating, ventilation, and air conditioning (HVAC) chiller system.