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:
Jan. 16, 2018
Filed:
Dec. 02, 2013
Wilo SE, Dortmund, DE;
Holger Stark, Dortmund, DE;
Alfred J. Otto, Oberkotzau, DE;
Wolfgang Geier, Hof, DE;
Bernd Kretschmer, Hof, DE;
Wolfgang Stroessner, Gattendorf, DE;
WILO SE, Dortmund, DE;
Abstract
The invention relates to a centrifugal pump, in particular a waste water submersible pump having an impeller (), of which the end face facing the pump intake opening is open and only the end face of the impeller facing away from the intake opening () is covered by a circular coaxial impeller hub (), on which the curved vanes () are fastened, and in particular molded on, wherein the base plate () having the intake opening () facing the impeller () or at least one segment () of the base plate is mounted so as to be movable against spring pressure () in such a way that the distance thereof from the impeller () and thus from the impeller vanes () changes.