Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Lubricant testing
Patent
1993-11-18
1994-12-13
Noland, Thomas P.
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Lubricant testing
73 10, G01N 3330
Patent
active
053720334
ABSTRACT:
A method and apparatus for measuring thickness and traction properties of elastohydrodynamic lubricant (EHL) films is described. The apparatus utilizes at least one ball or roller loaded against the internal diameter of a transparent ring having a larger radius than said ball or roller. A lubricant is placed between the rotating roller and ring thereby forming an EHL film where the ball and ring contact. Roller and ring rotating speeds are controlled to obtain different amounts of relative sliding motion between their surfaces. Contact between the surfaces and the resultant film are observed via the transparent ring which allows optical measurements of lubricating film thickness. Traction forces generated during contact are measured by any suitable force measuring device.
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Jackson Andrew
Kuivenhoven Andries
Webster Martin N.
Hager Jr. George W.
Malone Charles A.
McKillop Alexander J.
Mobil Oil Corporation
Noland Thomas P.
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