ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,749, issued on June 17, was assigned to FISHER & PAYKEL HEALTHCARE Ltd. (Auckland, New Zealand).
"Regenerative blower" was invented by Donald Roy Kuriger (Auckland, New Zealand) and Johannes Nicolaas Bothma (Auckland, New Zealand).
According to the abstract* released by the U.S. Patent & Trademark Office: "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 m...