ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,097, issued on March 18, was assigned to HYSYPRO AG (Wolfenschiessen, Switzerland).
"Immersion pump" was invented by Philipp Stempfle (Neuburg, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "An immersion pump (1) for conveying a fluid, preferably industrial or waste water, includes a drive unit (2) which extends along a rotational axis (x) and which is connected to a pump unit (3), wherein the pump unit (3) includes a pump casing (3.1) and a pump impeller (3.2), wherein the pump casing (3.1) includes a pump chamber (3.1.1) in which the pump impeller (3.2) is arranged rotatably about the rotational axis (x) and at least one inlet opening (3....