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. 18, 2022
Filed:
Jul. 31, 2017
Applicant:
Trane International Inc., Davidson, NC (US);
Inventors:
Stephen J. Lind, Onalaska, WI (US);
Jay E. Grotelueschen, La Crosse, WI (US);
Assignee:
TRANE INTERNATIONAL INC., Davidson, NC (US);
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/66 (2006.01); F04D 17/08 (2006.01); F04D 29/44 (2006.01); F04D 29/42 (2006.01); F04D 29/70 (2006.01); F04D 17/16 (2006.01); F04D 29/05 (2006.01);
U.S. Cl.
CPC ...
F04D 29/667 (2013.01); F04D 17/08 (2013.01); F04D 17/16 (2013.01); F04D 29/4213 (2013.01); F04D 29/441 (2013.01); F04D 29/663 (2013.01); F04D 29/668 (2013.01); F04D 29/703 (2013.01); F04D 29/05 (2013.01);
Abstract
A centrifugal fan assembly including fan wheel, a primary inlet bell, a secondary inlet bell, and a flow grid. The primary inlet bell and secondary inlet bell direct air into an inlet of the fan wheel of the centrifugal fan. Also disclosed is a sound reduction assembly for reducing the sound produced by a centrifugal fan or centrifugal compressor. A method of directing air flowing into a centrifugal fan or a centrifugal compressor is also disclosed.