Screw spindle pump

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11828287
APP PUB NO 20230184246A1
SERIAL NO

18078291

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A screw spindle pump, including a spindle housing, in which a drive spindle and a running spindle meshing therewith are received in spindle bores. The drive spindle has a cylindrical spindle core and at least two circumferential spindle profiles, and, on an end face, in a depression axially delimited by a planar bottom surface and in which the two profile valleys open out between the two spindle profiles offset by 180°, there is a disk-shaped coupling element, which has an insertion receptacle for a drive shaft of a drive motor and which is coupled to the drive spindle for conjoint rotation therewith via a form-fitting engagement with axially protruding projections that laterally delimit the depression and engage in lateral receptacles of the coupling element. The bottom surface is delimited by the spindle core in the region of the openings of the two profile valleys, and the coupling element has a rounded configuration, corresponding to the shape of the spindle core, in the element regions that adjoin the regions of the opening. The diameter of the coupling element, in the region of the rounded element regions, is no greater than the diameter of the spindle core.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
LEISTRITZ PUMPEN GMBH90459 NÜRNBERG

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lissek, Kristin Fürth, DE 6 2
Metz, Jürgen Feucht, DE 8 15
Popp, Florian Nuremberg, DE 6 2

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