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:
Aug. 20, 2013
Filed:
Aug. 18, 2008
Carl Stähle, Neunkirch, CH;
Carl Stähle, Neunkirch, CH;
Frideco AG, Neunkirch, CH;
Abstract
The pump rotor () comprises a first blade (), wherein the first blade () comprises a first helical-gear blade part () and, adjoining the latter, a first centrifugal-wheel blade part (), and said pump rotor () comprises a hub () with a rotational axis (D), wherein the centrifugal-wheel blade part () is fixedly connected to the hub (), wherein at least one second blade () is provided which comprises a second helical-gear blade part () and, adjoining the latter, a second centrifugal-wheel blade part (), wherein the first and the second blades () have in each case one outer edge (), wherein a connecting means () connects the first and second blades () to one another in the region of the outer edge (), and wherein the second centrifugal-wheel blade part () is arranged so as to run relative to the hub () in such a way that an opening () which runs continuously in the rotational direction (D) is formed between said second centrifugal-wheel blade part () and hub (), since the second centrifugal-wheel blade part () is not directly connected to the hub ().