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. 03, 2019
Filed:
Jun. 20, 2013
Applicant:
Resmed Pty Ltd, Bella Vista, NSW, AU;
Inventors:
Geoffrey D. Daly, Darling Point, AU;
Alexander Virr, Mangrove Mountain, AU;
Stephen A. Lea, Bella Vista, AU;
Dion Charles C. Martin, Bella Vista, AU;
Nicholas J. Reed, Bella Vista, AU;
Larry Puckeridge, Bella Vista, AU;
Timothy Tsun-Fai Fu, Bella Vista, AU;
Assignee:
ResMed Pty Ltd, Bella Vista, AU;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 1/00 (2006.01); A61M 16/08 (2006.01);
U.S. Cl.
CPC ...
F04D 1/00 (2013.01); A61M 16/0816 (2013.01); A61M 16/0875 (2013.01);
Abstract
A variable speed blower for Continuous Positive Airway Pressure (CPAP) ventilation of patients includes two impellers in the gas flow path that cooperatively pressurize gas to desired pressure and flow characteristics. Thus, the blower can provide faster pressure response and desired flow characteristics over a narrower range of motor speeds, resulting in greater reliability and less acoustic noise.