Rotary piston pump with slip ring seals for improved fitting and synchronization of rotary pistons

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9617995
APP PUB NO 20140348687A1
SERIAL NO

14453334

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
NETZSCH PUMPEN & SYSTEME GMBHGEBRÜDER-NETZSCH-STRASSE 19 D-95100 SELB

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Boehme, Thomas Waldkraiburg, DE 38 424
Denk, Reinhard Muehldorf, DE 12 16
Gradl, Matthias Sesslach, DE 15 52
Herr, Gunther Haarth, DE 10 11
Kamal, Hisham Waldkraiburg, DE 22 70
Kern, Stefan Haag, DE 38 81
Kneidl, Franz Waldkraiburg, DE 10 8
Kreidl, Johann Waldkraiburg, DE 20 85
Kurz, Robert Aschheim, DE 11 19
Murrenhoff, Bernhard Buchbach, DE 7 6
Schmitt, Thomas Toeging am Inn, DE 69 482
Strassl, Josef Straubing, DE 8 7
Tekneyan, Mikael Waldkraiburg, DE 17 40
Verhoeven, Marcel Hailsham East Sussex, GB 10 4
Weber, Erwin Ampfing, DE 8 4
Weigl, Stefan Muehldorf am Inn, DE 17 137
Willis, Roger Mettenheim, DE 6 3

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