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. 03, 2019
Filed:
Dec. 23, 2016
Johnson Electric International Ag, Murten, CH;
JOHNSON ELECTRIC INTERNATIONAL AG, Murten, CH;
Abstract
An impeller includes a back cover plate, and vanes and a hub disposed on the back cover plate. The impeller further includes a sealing ring disposed on one end of the impeller away from the back cover plate. A pump using the impeller includes a volute housing and a driving device. The volute housing includes a diffusor chamber, an inlet pipe and an outlet pipe. The impeller is rotatably received in the diffusor chamber and connected to the driving device. A baffle portion is disposed on an end wall in the diffusor chamber adjacent the inlet pipe. The baffle portion engages with the sealing ring to prevent back flow of the fluid. The pump has enhanced fluid delivery efficiency. The back cover plate may further define arc strip-shaped balance holes for reducing an axial force applied to the impeller, such that rotation of the impeller is more stable.