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:
Dec. 24, 2019
Filed:
Jul. 10, 2017
Grundfos Holding A/s, Bjerringbro, DK;
Olav Jensen, Viborg, DK;
Ole Hansen, Bjerringbro, DK;
Bent Døssing, Silkeborg, DK;
Robert Greve, Randers NV, DK;
Grundfos Holding A/S, Bjerringbro, DK;
Abstract
A pump assembly includes pump casing (), an impeller () rotatably arranged in the pump casing, a two rotation directions (A, B) electrical drive motor connected to drive the impeller and a valve arrangement () arranged in the pump casing to switch a flow path downstream of the impeller between two exits () of the pump casing, depending on a rotation direction of the impeller. The valve arrangement includes a first movable valve element () at a first exit () and a second movable valve element () at a second exit (). The first valve element partly closes the first exit in a closed position and is movable into an opened position by flow in the first rotation direction and the second valve element partly closes the second exit in a closed position and is movable into an opened position by flow in the second rotation direction (B).