Brakes – Internal-resistance motion retarder – Magnetic fluid or material
Reexamination Certificate
2011-01-25
2011-01-25
Williams, Thomas J (Department: 3657)
Brakes
Internal-resistance motion retarder
Magnetic fluid or material
C188S267000
Reexamination Certificate
active
07874407
ABSTRACT:
A magnetorheological fluid damping system includes a hydraulic cylinder, a piston head, a piston rod, and a porous valve. The hydraulic cylinder is configured for disposing magnetorheological fluid therein. The piston head is disposed within the hydraulic cylinder and has first and second sides defining first and second chambers within the hydraulic cylinder. The piston head is configured to be in sliding engagement with the hydraulic cylinder. The piston rod is connected to the piston head. The porous valve includes a magnetorheological fluid pathway, has first and second fluid connections, and is configured to dampen the flow of the magnetorheological fluid between the first and second fluid connections in accordance with a magnetic field. The first fluid connection is fluidly connected to the first chamber and the second fluid connection is fluidly connected to the second chamber. The magnetorheological fluid pathway at least partially directs magnetorheological fluid flow through a porous media.
REFERENCES:
patent: 1021677 (1912-03-01), Howell
patent: 1457059 (1923-05-01), Fregonara
patent: 4673067 (1987-06-01), Munning et al.
patent: 5018606 (1991-05-01), Carlson
patent: 5099884 (1992-03-01), Monahan
patent: 5277281 (1994-01-01), Carlson et al.
patent: 5878851 (1999-03-01), Carlson et al.
patent: 6279700 (2001-08-01), Lisenker et al.
patent: 6311810 (2001-11-01), Hopkins et al.
patent: 6694856 (2004-02-01), Chen et al.
patent: 6802404 (2004-10-01), Schurmans et al.
patent: 6953108 (2005-10-01), Anderfaas et al.
patent: 7051849 (2006-05-01), Browne et al.
patent: 2001/0054527 (2001-12-01), Card
patent: 2004/0173422 (2004-09-01), Deshmukh et al.
patent: 2005/0087409 (2005-04-01), Browne et al.
patent: 2007/0017758 (2007-01-01), Or et al.
patent: 10226124 (2003-08-01), None
patent: 102004024226 (2005-12-01), None
patent: 2220725 (1990-01-01), None
patent: 08074915 (1996-03-01), None
patent: WO 2005/045279 (2005-05-01), None
Shulman Z., “Magnetorheological systems and their application”, Magnetic Fluids and Applications Handbook, pp. 188-229 (1996).
Kuzhir et al., “Flow of magnetorheological fluid through porous media”, Euro J. Mech. B/Fluids 22, pp. 331-343 (2003).
Cho et al., “Smart passive system based on magnetorheological damper”, Smart Mater. Struct., vol. 14, pp. 707-714 (2005).
Lesieutre et al., “Damping as a result of piezoelectric energy harvesting”, Journ. of Sound and Vibration, vol. 269, pp. 991-1001 (2004).
Scruggs et al., “Control of a Civil Structure Using an Electric Machine with Semiactive Capability”, Journ. of Str. Eng., pp. 951-959 (Jul. 2003).
Breese et al., “Semi-Active, Fail-Safe Magneto-Rheological Fluid Dampers for Mountain Bicycles”, Intnl. J. Vehicle Design, in press (2003).
Yang et al., “Large-scale MR fluid dampers: modeling and dynamic performance considerations”, Eng. Struc., vol. 24, pp. 309-323 (2002).
Choi et al., “Semi-Active Vibration Isolation Using Magnetorheological Isolators”, Journ. of Aircraft, vol. 42, No. 5, pp. 1244-1251 (2005).
Hiemenz et al., “Seismic Control of Civil Structures Utilizing Semi-Active MR Braces”, Computer-Aided Civil and Infr. Eng, vol. 18, pp. 31-44 (2003).
Skaar et al., “Slotless, Toroidal Wound, Axially-Magnetized Permanent Magnet Generator for Small Wind Turbine Systems”, Norwegian Univ. of Sc. and Tech.
Kamath et al., “Characterization of Magnetorheological Helicopter Lag Dampers”, SPIE's 5th Ann. Sym. on Smart Str. and Mat., San Diego, CA, 1-5 (Mar. 1998).
Graves et al., “Theoretical Comparison of Motional and Transformer EMF Device Damping Efficiency”, Journ. of Sound and Vibration, vol. 233(3), pp. 441-453 (2000).
PCT International Search Report for PCT/US2007/014193 dated Nov. 28, 2007.
Choi et al., “Comparative Analysis of the Time Response of Electrorheological and Magnetorheological Dampers Using Nondimensional Parameters”, J. of Int. Mat. Sys. and Str., vol. 13, pp. 443-451 (2002).
Carlson, J.D., “What Makes a Good MR Fluid?”, Journal of Intel. Mat. Systems and Structure, 13(7-8):431-435 (2002).
Choi et al., “Biodynamic Response to Shock Loads Using Magnetorheological Helicopter Crew Seat Suspensions”, AIAA J. Aircraft, 42(5);1288-1295 (2005b).
Dong et al., “Smart Rehabilitation Devices: Pt. I-Force Tracking Control”, J. of Intelligent Mat. Sys. and Struc., 17(7):543-552 (2006a).
Dong et al., “Smart Rehabilitation Devices: Pt. II-Adaptive Motion Control”, J. of Intelligent Material Sys. and Struc., 17(7):555-561 (2006b).
Duan et al., “Cable Vibration Using Magnetorheological Dampers”, Journ. of Intelligent Material Syst. and Struc., 17(4):321-325 (2006).
Facey et al., “Design and Testing of a Compact Magnetorheological Impact Damper for High Impulsive Loads”, Intl. J. of Modern Physics Part B., 19(7-9):1549-1555 (2005).
Lindler et al., “Analysis and Testing of Electrorheological Bypass Dampers”, Journ. of Intelligent Mat. Syst. and Struc., 10(5):363-376 (1999).
Browne Alan L.
Cook Eugene
Hu Wei
Wereley Norman M.
Carter DeLuca Farrell & Schmidt LLP
GM Research & Development
University of Maryland
Williams Thomas J
LandOfFree
System and method for magnetorheological-fluid damping... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for magnetorheological-fluid damping..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for magnetorheological-fluid damping... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2709053