Education and demonstration – Means for demonstrating apparatus – product – or surface... – Lubricant or lubrication
Reexamination Certificate
2005-10-26
2010-06-22
Saadat, Cameron (Department: 3715)
Education and demonstration
Means for demonstrating apparatus, product, or surface...
Lubricant or lubrication
C073S010000, C073S053050, C073S054010, C073S054120
Reexamination Certificate
active
07740483
ABSTRACT:
A portable apparatus and method for demonstrating different characteristics of different fluids that includes different fluid sumps or chambers for receiving samples of the different fluids. A test shaft having different portions that are immersed in the different fluid samples in the chambers is driven by an electric drive motor at a substantially constant speed while substantially the same amount of friction or force is applied to the different portions of the test shaft at different times to increase the resistance presented to the drive motor. The additional amount of current drawn or power absorbed by the motor or strain induced in the motor drive shaft during the application of such friction or force to the different portions of the test shaft is monitored and compared to provide a comparison of the friction or power loss characteristics of the different fluid samples.
REFERENCES:
patent: 1977244 (1934-10-01), Putnam et al.
patent: 2045897 (1936-06-01), Clegg
patent: 2175638 (1939-10-01), Rau
patent: 2221731 (1940-11-01), Biggs
patent: 2700228 (1955-01-01), Fainman
patent: 2738670 (1956-03-01), Coene
patent: 3267722 (1966-08-01), Gordon
patent: 3766773 (1973-10-01), Limpert
patent: 4484468 (1984-11-01), Gau et al.
patent: 4731028 (1988-03-01), Dickerson
patent: 4942759 (1990-07-01), Beers
patent: 2002/0116987 (2002-08-01), Braithwaite et al.
patent: 2003/0147073 (2003-08-01), Abraham et al.
patent: 2003/0236855 (2003-12-01), Quesnel, Jr.
Viscocity Introduction : Friction at the Molecular Level, Michael Flowler, UVA Jun. 26, 2007, Source:- http://galileo.phys.virginia.edu/classes/152.mf1i.spring02/Viscosity.pdf; pp. 1, 3-8.
Friction in Fluids, Princeton University 1996, Source:- http://www.physics.princeton.edu/˜mcdonald/examples/ph101—1996/ph101lab8—96.pdf. pp. 1-5.
Havelka Kathleen O.
Taylor William P.
Gebremichael Bruk A
Hilker Christopher D.
Saadat Cameron
Shold David M.
The Lubrizol Corporation
LandOfFree
Portable demonstration apparatus and method for the... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Portable demonstration apparatus and method for the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Portable demonstration apparatus and method for the... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4249262