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:
Feb. 27, 2007
Filed:
Jan. 20, 2003
Ugo Favret, Casarsa, IT;
Silvano Cimetta, Treviso, IT;
Ugo Favret, Casarsa, IT;
Silvano Cimetta, Treviso, IT;
Electrolux Home Products Corporation N.V., Zaventem, BE;
Abstract
Centrifugal pump, in particular drain pump for washing machines, comprising a casing () that defines a chamber () within which an impeller formed by a hub () and a disk () provided with blades () is capable of rotating. The impeller is provided with at least a slit () adapted to generate a negative pressure on the rear surface of the disk () during the rotation of said impeller. The solution is very simple and rational; it enables a clogging of the impeller, as it may be caused by the presence of foreign matters and bodies in the washing liquor, to be avoided. It also enables axial thrusts, as they occur during the rotation of the impeller, to be compensated for.