The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8574417 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 05, 2013

Filed:

Aug. 07, 2009
Applicant:

Egil Eriksen, Foldrøyhamn, NO;

Inventor:

Egil Eriksen, Foldrøyhamn, NO;

Assignee:

Tool-Tech AS, Rykkinn, NO;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 17/06 (2006.01); B01D 39/04 (2006.01); C10G 33/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

The invention relates to a method for two-step separation of water, salt and particles from a hydraulic fluid by the use of a control unit. The hydraulic fluid is carried into a return oil tank with an electrostatic coalescer provided with a high-voltage transformer with direct current to two electric grids whose electrostatic field gathers water into drops which settle into a collecting tank. The hydraulic fluid is circulated to a filter module for removing any remaining water, salt and particles in filter elements connected in parallel, having hygroscopic cellulose fibers which swell until saturation, the swelling being measured by a sensor measuring the degree of saturation, alternatively conductivity.


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Eriksen, Egil. (2013). Method for two-step separation of water, salt and particles from a hydraulic fluid (U.S. Patent No. 8574417). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8574417

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