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:
Aug. 30, 2016
Filed:
Jul. 30, 2013
Applicant:
Resmed Limited, Bella Vista, New South Wales, AU;
Inventors:
Geoffrey Daniel Daly, Brisbane, AU;
Alexander Virr, Gosford, AU;
Stephen Anthony Lea, Sydney, AU;
Nicholas Jerome Reed, Sydney, AU;
Assignee:
ResMed Limited, Bella Vista, AU;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61M 16/10 (2006.01); A61M 16/00 (2006.01); F04D 17/12 (2006.01); F04D 25/16 (2006.01); F04D 29/28 (2006.01);
U.S. Cl.
CPC ...
A61M 16/0066 (2013.01); A61M 16/0057 (2013.01); A61M 16/0069 (2014.02); A61M 16/105 (2013.01); F04D 17/122 (2013.01); F04D 25/166 (2013.01); F04D 29/284 (2013.01); A61M 16/107 (2014.02); A61M 2205/42 (2013.01);
Abstract
A multiple stage 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 multiple stage 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.