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US 5,314,620 AGranted
Cutting oil treatment
AssigneeHarvey Universal, Inc.
InventorRobert Staniec
Life of this patent
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Abstract
A method and apparatus for the biological purification of cutting oil, such as used in metal machining apparatus, is disclosed. The invention herein provides a suitable environment for cultured aerobic bacteria. These beneficial bacteria act to break down the hazardous organic waste products of anaerobic bacteria and eliminate rank odors. The cutting oil is aerated to encourage the proliferation of the aerobic bacteria, and to discourage the proliferation of the unwanted anaerobic bacteria.
Claims5
A method for the biological purification of cutting oil, said method comprising:
- (a) aerating cutting oil;
- (b) introducing nitrifying bacteria into the aerated cutting oil;
- and
- (c) supporting the proliferation of the introduced bacteria.
1 more element
Dependencies are inferred from the claim text.