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:
Apr. 13, 2021
Filed:
Jan. 27, 2020
Resmed Pty Ltd, Bella Vista, AU;
Adel Nibu, Grafrath, DE;
Johannes Nickol, Neukenroth, DE;
Achim Biener, Aufkirchen, DE;
Johann Sebastian Burz, Germaringen, DE;
Bernd Christoph Lang, Graefelfing, DE;
Saad Nasr, Sydney, AU;
Robert Eibl, Munich, DE;
Andreas Kirchberger, Miesbach, DE;
Christian Bayer, Penzberg, DE;
ResMed Pty Ltd, Bella Vista, AU;
Abstract
A blower for a respiratory apparatus includes an impeller configured to rotate to pressurize the supply of gas. The impeller includes a shroud with a plurality of vanes extending from a surface of the shroud toward the gas inlet. Each vane radiates outwards from a hub in the shroud that is configured to receive a motor shaft. The outer diameter of the shroud varies between maximum portions with a maximum outer diameter and minimum portions with a minimum outer diameter. The maximum portions are located at the vanes and the minimum portions are located between the vanes. In addition, each vane has an intermediate point located a predetermined distance from the hub that marks the beginning of a curvature of the vane in the direction of the impeller's rotation. The curvature of the vane is located between the intermediate point and the radially outermost end of the vane.