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. 14, 2015
Filed:
Mar. 11, 2008
Arkadiusz Tomzik, Bergisch Gladbach, DE;
Ulrich Helbing, Burscheid, DE;
Dietrich Witzler, Rommerskirchen, DE;
Michael Baumann, Flein, DE;
Frank Herre, Oberriexingen, DE;
Martin Stiegler, Steinheim, DE;
Herbert Martin, Weinstadt, DE;
Thomas Appel, Bönnigheim, DE;
Arkadiusz Tomzik, Bergisch Gladbach, DE;
Ulrich Helbing, Burscheid, DE;
Dietrich Witzler, Rommerskirchen, DE;
Michael Baumann, Flein, DE;
Frank Herre, Oberriexingen, DE;
Martin Stiegler, Steinheim, DE;
Herbert Martin, Weinstadt, DE;
Thomas Appel, Bönnigheim, DE;
Oerlikon Textile GmbH & Co. KG, Remschied, DE;
Durr Systems GmbH, Bietigheim-Bissingen, DE;
Abstract
The invention relates to a gear wheel pump with two meshing gear wheels which are rotatably mounted within a pump housing by means of a driven driveshaft and a crankshaft journal and which form a pumping channel system between a pump inlet and a pump outlet. Several gaps are formed between the pump housing, the gear wheels, the driveshaft, and the crankshaft journal. One of the gaps between the driveshaft and one of the gear wheels contains means for the rotationally fixed connection of the driveshaft to the gear wheel. In order to prevent leakages penetrating to the connecting means, according to the invention the gap between the driveshaft and the gear wheel is sealed, with respect to the front faces of the gear wheel, by means of a sealant.