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:
Jun. 17, 2025
Filed:
May. 11, 2022
Applicant:
Fisher & Paykel Healthcare Limited, Auckland, NZ;
Inventors:
Donald Roy Kuriger, Auckland, NZ;
Johannes Nicolaas Bothma, Auckland, NZ;
Assignee:
FISHER & PAYKEL HEALTHCARE LIMITED, Auckland, NZ;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 23/00 (2006.01); A61M 16/00 (2006.01); F04D 5/00 (2006.01); F04D 25/06 (2006.01); F04D 29/18 (2006.01); F04D 29/42 (2006.01); F04D 29/66 (2006.01);
U.S. Cl.
CPC ...
F04D 23/008 (2013.01); A61M 16/0066 (2013.01); F04D 5/002 (2013.01); F04D 25/0606 (2013.01); F04D 29/4213 (2013.01); F04D 29/4246 (2013.01); A61M 2205/42 (2013.01); F04D 29/188 (2013.01); F04D 29/666 (2013.01); F05B 2250/501 (2013.01); F05D 2250/53 (2013.01);
Abstract
In accordance with one aspect the present invention may comprise a regenerative blower comprising: a housing, a first port and second port in the housing, an airflow channel extending between the first and second ports for airflow between the ports, an impeller rotatable in an impeller channel to promote airflow in the airflow channel from the first port to the second port, a motor to drive the impeller, and an interrupter between the first and second ports to limit airflow from the second port to the first port.