Progressive cavity pump/motor stator including framework elements and grooves defining chambers

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9540933
APP PUB NO 20160017711A1
SERIAL NO

14378861

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A stator for a progressive cavity pump or motor includes a stator housing having a longitudinal axis. In addition, the stator includes a stator insert of a material moulded within the housing. The stator housing includes an outer tube having an inner surface. The stator housing also includes a plurality of framework elements disposed on the inner surface of the outer tube. Further, the stator housing includes at least one recess in the inner surface of the outer tube. The conjunction of the framework elements and the at least one recess define a plurality of chambers receiving insert material therein whereby the insert material is mechanically fixed axially, radially and torsionally within the outer tube.

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Patent Owner(s)

Patent OwnerAddress
NAT OILWELL VARCO LPTEXAS USA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Morris, Andrew Derbyshire, GB 82 1766

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