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. 26, 2023
Filed:
Apr. 09, 2019
Velcora Holding Ab, Arsta, SE;
Rifet Mehmedovic, Tumba, SE;
Pedram Azadrad, Tullinge, SE;
Henrik Nedlich, Sundbyberg, SE;
Poul Anton Daugaard, Kolding, DK;
Jesper Raabjerg Jensen, Middelfart, DK;
Velcora Holding AB, Arsta, SE;
Abstract
A pump housing device for a fluid pump comprises a rear wall element comprising a rear surface turned towards an impeller. The rear wall element comprises an opening defining a cylindrical surface along a longitudinal central axis. The opening receives a rotating drive shaft of the impeller. A static seal element has a plane seal surface that seals against a plane seal surface of a rotary seal element mounted to the drive shaft and rotating with the drive shaft. The plane seal surface of the static seal element is turned away from the rear surface. One or more grooves extend through the rear wall element and through the rear surface and the cylindrical surface. Each groove has a bottom line that extends from the rear surface to the cylindrical surface.