Low-wear slurry pump

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9657739
APP PUB NO 20140037440A1
SERIAL NO

14111599

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Abstract

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A centrifugal pump for a slurry combines design changes with respect to conventional configurations that produce quasi-laminar flow and materially extend the life of the casing. The cutwater clearance of the casing is increased to a range of 0.20 to 0.25 times the diameter of the impeller. The casing includes a redesigned removable annular liner with a diameter increased to at least 1.15 times the diameter of the impeller. The pump preferably also has an axially adjustable wear ring with a diameter increased such that it extends by at least 10% over the diameter of the area of interface between the wear ring and the impeller.

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Patent Owner(s)

Patent OwnerAddress
FLSMIDTH A/SVALBY

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Frater, John Scottsdale, US 1 2
McGahee, Ricky Tucson, US 1 2

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Maintenance Fees

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3.5 Year Payment $1600.00 $800.00 $400.00 Nov 23, 2020
7.5 Year Payment $3600.00 $1800.00 $900.00 Nov 23, 2024
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Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00