Indicating lubricant additive

a technology of additives and lubricants, applied in the direction of lubricant composition, fuels, mechanical equipment, etc., can solve the problems of insufficient properties, lubricant is subjected to an extremely high amount of shear, and possibly a high pressure, and lubricant is subjected to a large amount of shear, so as to achieve the effect of easy determination of the optimal time to replace such lubricant without complicated and expensive measurements and/or complex analyses

Inactive Publication Date: 2006-06-22
TECH INNOVATIONS LLC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0026] This technique is advantageous because it is inexpensive compared to other approaches, and it can be adapted to any of a number of lubricant compositions. As a result of th

Problems solved by technology

On a microscopic scale, the lubricant is subjected to an extremely high amount of shear, and possibly a high pressure, in the regions where the surfaces in motion are nearly in contact.
Nonetheless, lubricants still ultimately break down in use to a point where their properties are insufficient for the particular intended use, and bulk replacement of the lubricant within its containment boundary is required, such as e.g., an “oil change” in a vehicle.
Under most circumstances, the optimum point at which a bulk lubricant change should occur is uncertain, from a performance standpoint and ultimately an economic standpoint.
For example, while it is possible to make sophisticated rheological and compositional measurements of motor oil to indicate when such oil is failing to lubricate sufficiently, such measurements are not econom

Method used

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Examples

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Embodiment Construction

[0043] For a general understanding of the present invention, reference is made to the drawings. In the drawings, like reference numerals have been used throughout to designate identical elements. In describing the present invention, a variety of terms are used in the description. Standard terminology is widely used in the fields of color science and lubricant science.

[0044] For example, with regard to color science, one may refer to, U.S. Pat. No. 5,867,169 of Prater, “Method and apparatus for manipulating values in a color graphics system;” and U.S. Pat. No. 4,623,973 of Hoffrichter et al., the disclosures of which are incorporated herein by reference. These patents provide a detailed summary of the red-blue-green (RGB) additive color model, and the hue-saturation-luminance (HSL) and hue-saturation-value (HSV) subtractive color models, and the relationships therebetween.

[0045] In this disclosure, terminology with respect to color science and color pertaining to the use of the ind...

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PUM

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Abstract

An indicating lubricant additive comprising a color-changable polymer having an outer layer of a first color, and an intermediate layer of a second color; and a lubricant sensing dipstick comprising a circuit housing, an elongated body having a proximal end and a distal end, and lubricant sensing means disposed at said distal end, wherein in one embodiment, the sensing means detects a change in the indicating lubricant additive that is. present in a lubricant.

Description

[0001] This invention relates in one embodiment to a lubricant additive composition, and more particularly to an additive which changes in appearance in a manner that correlates with the lubricating properties of the lubricant through which it is distributed, and that results in a change in appearance in the overall lubricant-additive mixture. FIELD OF THE INVENTION [0002] A lubricant additive composition which changes in appearance in a manner that correlates with the lubricating properties or aging of the lubricant through which it is distributed. BACKGROUND OF THE INVENTION [0003] The use of viscous liquids and semi-solids (e.g. greases) as lubricants disposed between surfaces in motion at different velocities is well known and widely used. Such lubricants are used in particular in a variety of known mechanical apparatus, such as internal combustion (IC) engines, transmissions, electric motors, machine tools, and the like. The difference in velocities of the surfaces may be with ...

Claims

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Application Information

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IPC IPC(8): C10M125/04
CPCC10N2250/16C10M169/044C10M171/007C10M2201/05C10M2215/08C10M2215/16F16C33/109C10N2210/01C10N2210/02C10N2210/08C10N2220/03C10N2240/56F16C33/106C10M2217/044C10N2010/14C10N2020/075C10N2010/02C10N2010/04C10N2040/42C10N2050/12C10N2010/16
Inventor COOPER, SARAH M.WEINER, MICHAELMACDONALD, STUART G.
Owner TECH INNOVATIONS LLC
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