Screw pump or machine with a liner that bends and/or pivots with the rotors

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 12012957
APP PUB NO 20230013936A1
SERIAL NO

17783893

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An improved screw pump such as, for example, a twin screw pump is disclosed. In one embodiment, the screw pump includes a casing, first and second intermeshing rotors, and a liner positioned between the first and second rotors and the casing. In use, the liner is arranged and configured to bend and/or pivot in unison with the first and second rotors under the axial hydraulic pressure experienced by the screw pump during use. In one embodiment, the liner may be arranged and configured to include an asymmetric axial stiffness to facilitate bending of the liner. In another embodiment, the liner may be arranged and configured in multiple segments, the segments being arranged and configured to pivot to approximate the bending of the rotor shafts.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
CIRCOR PUMPS NORTH AMERICA LLC1710 AIRPORT ROAD MONROE NC 28110

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hall, Victor Monroe, US 2 1
Jaeschke, Axel Monroe, US 7 16

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