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:
Apr. 11, 2017
Filed:
Aug. 06, 2014
Netzsch Pumpen & Systeme Gmbh, Selb, DE;
Stefan Weigl, Muehldorf am Inn, DE;
Reinhard Denk, Muehldorf, DE;
Hisham Kamal, Waldkraiburg, DE;
Josef Strassl, Straubing, DE;
Robert Kurz, Aschheim, DE;
Bernhard Murrenhoff, Buchbach, DE;
Thomas Boehme, Waldkraiburg, DE;
Gunther Herr, Haarth, DE;
Franz Kneidl, Waldkraiburg, DE;
Mikael Tekneyan, Waldkraiburg, DE;
Matthias Gradl, Sesslach, DE;
Erwin Weber, Ampfing, DE;
Roger Willis, Mettenheim, DE;
Stefan Kern, Haag, DE;
Johann Kreidl, Waldkraiburg, DE;
Marcel Verhoeven, Hailsham East Sussex, GB;
Thomas Schmitt, Toeging am Inn, DE;
NETZSCH Pumpen & Systeme GmbH, Selb, DE;
Abstract
A rotary piston pump with at least two double- or multi-lobe rotary pistons rotating in opposite directions, the drive shafts whereof include seals, wherein the seals are constituted as slip ring seals or lip seals or stuffing-box seals, which in each case are disposed on the shaft shoulder belonging to the respective rotary piston, and one slip ring per seal is provided with a locking device, which includes a large number of fixing positions. The seals are pushed onto a tubular shoulder of the rotary piston, the rotary piston is introduced into the pump housing, the securing element is connected to the slip ring seal in a form-fit manner by rotation of the rotary piston and the shaft shoulder is then rigidly connected to the drive shaft.