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Filtering device for a canned motor

  • US 5,234,316 A
  • Filed: 05/07/1991
  • Issued: 08/10/1993
  • Est. Priority Date: 10/12/1988
  • Status: Expired due to Fees
First Claim
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1. A canned motor, comprising a housing defining a rotor compartment and a first gap for the flow of a fluid through said compartment, said first gap having a first width;

  • a rotor shaft extending through and defining with said housing a chamber upstream of said first gap; and

    filtering means provided in said chamber and including a rotary first tubular element which surround said shaft and a stationary second tubular element which surrounds said first tubular element, said tubular elements together defining a second gap having a second width less than said first width, said tubular elements together constituting a grinding means for suspended solids entering said second gap so that solids too large to pass through said second gap are ground prior to entering said first gap.

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