U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Liquid separating and recycling

Patent 4361488 Issued on November 30, 1982. Estimated Expiration Date: Icon_subject December 10, 2000. Estimated 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.

Patent References

3878094

Oil extractor
Patent #: 3972816
Issued on: 08/03/1976
Inventor: Mail ,   et al.

Oil-water separation process and apparatus
Patent #: 4011158
Issued on: 03/08/1977
Inventor: Cook

Bilge water disposal system including oil recovery means
Patent #: 4018683
Issued on: 04/19/1977
Inventor: Walters ,   et al.

Gravitational separator for mixtures of immiscible liquids of different densities
Patent #: 4032444
Issued on: 06/28/1977
Inventor: Wright ,   et al.

4081373

Gravitational separator for mixtures of immiscible liquids of different densities
Patent #: 4111806
Issued on: 09/05/1978
Inventor: Wright ,   et al.

Oily-water separator
Patent #: 4151087
Issued on: 04/24/1979
Inventor: Sakaguchi

Water polishing system
Patent #: 4162973
Issued on: 07/31/1979
Inventor: Lynch

Coated metal fiber coalescing cell
Patent #: 4240908
Issued on: 12/23/1980
Inventor: Swain ,   et al.

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Inventors

Assignee

Application

No. 06/215060 filed on 12/10/1980

US Classes:

210/776, Skimming210/320, With baffle perpendicular to flow direction210/538, Lighter constituent trap210/799, Filtering immiscible liquids210/804, And additional diverse separation210/805And recirculating liquid

Examiners

Primary: Castel, Benoit

Attorney, Agent or Firm

International Classes

C23G 1/00 (20060101)
C23G 1/36 (20060101)
C10M 175/04 (20060101)
B01D 17/00 (20060101)
C10M 175/00 (20060101)

Abstract

Solid contaminants are removed from tramp oil containing aqueous emulsions, the emulsions are separated into reusable constituents and the separated aqueous liquid is recycled. Apparatus and method are provided especially for reclaiming solvents, washing solutions, lubricating oil, cutting oil and the like from installations for cleaning, quenching or washing oil coated stampings, parts, and the like. Dirt, grit, scale and the like contaminants are filtered out from used industrial cleaning solutions, the liquid components are coalesced into reusable constituents and the aqueous component is continuously recycled for re-use without loss of dissolved chemicals or consumption of energy for heating or cooling. The apparatus is compact, self-contained with a filter, an electric motor driven pump, and valved piping to be easily mounted adjacent and connected to industrial equipment without disturbing the equipment, operates with a minimum amount of energy and is serviced without interruption of the operation of the equipment.

Other References

  • Albany Felt Company brochure on "Kolar" coalescing cartridges with enclosed presentations at The Filtration Society Meeting, Apr. 15, 1975 entitled A Review of Basic Properties of Oil and the Practical Aspects of Oily Water Separation
  • AMF Cuno brochure on "Zeta Plus Filter Media", No. ZP20.2 dated Oct. 11, 1976
  • "Liquid Separator System", Allith Division Smith Jones, Inc
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