Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Inorganic compound
Reexamination Certificate
2000-01-21
2001-08-21
Johnson, Jerry D. (Department: 1764)
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Inorganic compound
Reexamination Certificate
active
06277793
ABSTRACT:
BACKGROUND.
The present invention is directed to an additive for machine tool coolant and more particularly to a clarifier additive for controlling static electricity in machine tool coolants.
Additives for liquid coolants and static electric compositions are known in the art. Various types of equipment for either adding additives or, for example, detecting static electricity are also known in the art. The following is a list of prior art patents which are directed to this subject matter.
U.S. Pat. No. 2,393,863
U.S. Pat. No. 2,564,926
U.S. Pat. No. 2,909,190
U.S. Pat. No. 2,928,406
U.S. Pat. No. 3,026,888
U.S. Pat. No. 3,164,747
U.S. Pat. No. 3,399,133
U.S. Pat. No. 3,405,722
U.S. Pat. No. 3,449,668
Machine tool coolants are well known in the art and are used, for example, in abrasive grinders, drilling machines and milling machines to cool and lubricate the cutting tools or cutting wheels as the work pieces are being drilled, ground or milled. The coolants are normally recycled. Various contaminants are found in the recycled water-based coolants.
SUMMARY OF THE INVENTION.
The present invention is an additive which is added to the coolant, generally water-based coolant, to eliminate static electricity. This helps contaminants, regardless of their size, to settle to the bottom. It has been found that the additive also acts as a mild nist inhibitor and as an anti- foaming agent.
REFERENCES:
patent: 2393863 (1946-01-01), Myers
patent: 2564926 (1951-08-01), Rapier
patent: 3026888 (1962-03-01), Gorand
patent: 3819521 (1974-06-01), Sims
patent: 4448701 (1984-05-01), Duerksen et al.
Deimen James M.
Johnson Jerry D.
Popelar Filter Co., Inc.
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