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

Oil/water separator

Patent 5207895 Issued on May 4, 1993. Estimated Expiration Date: Icon_subject June 15, 2012. 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

3558482

Pollution control system
Patent #: 4116835
Issued on: 09/26/1978
Inventor: Bertelson

Method of and means for oily water separation
Patent #: 4139463
Issued on: 02/13/1979
Inventor: Murphy ,   et al.

Method and device for separating a mixture
Patent #: 4145280
Issued on: 03/20/1979
Inventor: Middelbeek ,   et al.

Coalescence system
Patent #: 4203843
Issued on: 05/20/1980
Inventor: Carlstedt

Device for separating a mixture
Patent #: 4265759
Issued on: 05/05/1981
Inventor: Verpalen ,   et al.

Process and apparatus for separating liquids
Patent #: 4315822
Issued on: 02/16/1982
Inventor: Jaisinghani

Portable water filtration system for oil well fractionation
Patent #: 4534869
Issued on: 08/13/1985
Inventor: Seibert

Water separator and filter for liquid hydrogens
Patent #: 4673499
Issued on: 06/16/1987
Inventor: Koch ,   et al.

Oil separator
Patent #: 4684467
Issued on: 08/04/1987
Inventor: Cloud

More ...

Inventors

Assignee

Application

No. 898319 filed on 06/15/1992

US Classes:

210/95, Sight glass210/109, Discharge of treated material210/180, Vapor or gas removal210/187, Within gravitational separator210/188, WITH GAS SEPARATOR210/262, On different levels210/265, With gravitational separator210/521, Superposed compartments or baffles, e.g., parallel plate type210/539, Gas vent or bypass210/540With discharge port

Examiners

Primary: Hruskoci, Peter A.
Assistant: Nessler, Cynthia L.

Attorney, Agent or Firm

International Classes

C02F 001/40
B01D 017/022
B01D 015/00

Abstract

A separator for removing oil-like substances from water using vertical columns of coalescing media to then enhance separation of the two phases. The coalescing media is an inert packing material having surfaces to enhance coalescing without significant resistance to flow. Final oil removal is achieved by a vertical column of charcoal pellets. The separator is of particular value in the processing of oil/water discharges from air compressing systems. This produces water that can be discharged in an environmentally safe manner to conventional sewers, etc. The oil is held in a convenient storage vessel for ultimate disposal. No pumping devices are needed in the separator as flow is provided either by the pressure in the outlet from the compressor system, or by gravity from a feed tank. The vertical columns are arranged within a cylindrical vessel to minimize floor space and plumbing. The oil concentration in the product water is below current EPA standards.

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