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US Patent 5868256 - Rotary clay material refiner

US Patent Issued on February 9, 1999
Estimated Patent Expiration Date: Icon_subject August 29, 2017Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
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Abstract

An apparatus for refining clay material having a horizontally oriented rotating drum into which clay material and water are fed. The clay material and water form a slurry which is agitated by lifters within the drum. A series of adjustable lifters within the drum refine the slurry by lifting aggregates and rocks out of the slurry and discharging them out of the refiner. The refined slurry exits the drum through an opening in the drum. The refined slurry is then taken away from the drum for further processing.

Inventor

Application

No. 920989 filed on 08/29/1997

US Classes:

209/173, Water or aqueous solution209/208, Grading deposition209/294, Lifters and deflectors209/299, Lifters and beaters209/913SCREW FEED CONVEYOR

Field of Search

209/172, Gravity liquid209/172.5, Suspension209/173, Water or aqueous solution209/208, Grading deposition209/913, SCREW FEED CONVEYOR209/294, Lifters and deflectors209/299Lifters and beaters

Examiners

Primary: Terrell, William E.
Assistant: Dillon, Joe Jr.

Attorney, Agent or Firm

US Patent References

Re16674, 384861, 501898, 1649020, 2117553, 2119414, 2208092, 2450980, 2608716, 2760633, 3014315, 3392828, 3837490, 3892563, 4267980Separator
Issued on: 05/19/1981
Inventor: LaPoint

Foreign Patent References

  • 534845 CA 12/21/2010
  • 1222479 CA 06/21/1987
  • 866046 FR 06/21/2010
  • 1066339 FR 01/21/2010
  • 61649 DE 03/21/1892
  • 191356 DE 08/21/2010
  • 627316 GB 08/21/2010
  • 754895 GB 08/21/2010

International Classes

B03B 005/60
B03B 005/28
B03B 005/56

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