High-pressure microhydraulic actuator

Details High-pressure microhydraulic actuator High-pressure microhydraulic actuator

2008-06-10

2008-06-10

Noguerola, Alex (Department: 1795)

Chemistry: electrical and wave energy

Apparatus

Electrophoretic or electro-osmotic apparatus

C422S105000

Reexamination Certificate

active

07384526

ABSTRACT:
Electrokinetic (“EK”) pumps convert electric to mechanical work when an electric field exerts a body force on ions in the Debye layer of a fluid in a packed bed, which then viscously drags the fluid. Porous silica and polymer monoliths (2.5-mm O.D., and 6-mm to 10-mm length) having a narrow pore size distribution have been developed that are capable of large pressure gradients (250-500 psi/mm) when large electric fields (1000-1500 V/cm) are applied. Flowrates up to 200 μL/min and delivery pressures up to 1200 psi have been demonstrated. Forces up to 5 lb-force at 0.5 mm/s (12 mW) have been demonstrated with a battery-powered DC-DC converter. Hydraulic power of 17 mW (900 psi@ 180 uL/min) has been demonstrated with wall-powered high voltage supplies. The force and stroke delivered by an actuator utilizing an EK pump are shown to exceed the output of solenoids, stepper motors, and DC motors of similar size, despite the low thermodynamic efficiency.

REFERENCES:
patent: 6224775 (2001-05-01), Foley et al.
patent: 6277257 (2001-08-01), Paul et al.
patent: 6472443 (2002-10-01), Shepodd
patent: 2004/0074768 (2004-04-01), Anex et al.
patent: 2004/0074784 (2004-04-01), Anex et al.
patent: 2006/0160205 (2006-07-01), Blackburn et al.
Mosier, Bruce P.; Robert W. Crocker; Kamlesh D. Patel; High-pressure microhydraulic actuator; Nov. 15-21, 2003; ASME; Proceedings of IMECE '03; 2003 ASME International Mechanical Engineering Conference and Exposition; pp. 1-6.
Yao, Shuhuai; David Huber; James C. Mikkelsen; Juan G. Santiago; A large flowrate electroosmotic pump with micron pores; Nov. 11-16, 2001; ASME; Proceedings of 2001 ASME International Mechanical Engineering Congress and Exposition; vol. 3; pp. 639-645.
Reichmuth, David S.; Gabriela S. Chirica; Brian J. Kirby; Jan. 14, 2003; Elsevier; Sensors and Actuators; vol. 92; pp. 37-43.
Reichmuth, D.S.; Chirica, Gabriela; and Kirby, B.J.; “Increasing the performance of high-pressure, high-efficiency electrokinetic micropumps using zwitterionic solute additives”Sensors and Actuators B, v. 92 2003; pp. 37-43.
Mosier, B.P.; Crocker, R.W.; Patel, K.D.; Rognlien, J.L.; “High-Pressure Microhydraulic Actuator” Proceedings of IMECE'03; 2003 ASME International Mechanical Engineering Conference and Exposition; Nov. 15-21, 2003 Washington, D.C.; IMECE2003-44401, 6 pp.
Ngola, S.M.; Fintschenko, Y.; Choi, W.-Y.; and Shepodd, T.J.; “Conduct-as-Cast Polymer Monoliths as a Separation Media for Capillary Electrochromatography”Analytical Chemistry, v.73(5), Mar. 1, 2001; pp. 849-856.
Yao, S.; Huber, D.; Mikkelsen, J.C.; and Santiago, J.G; “A Large Flowrate Electroosmotic Pump With Micron Pores” Proceedings of IMECE; 2001 ASME International Mechanical Engineering Conference and Exposition; Nov. 11-16, 2003 New York, NY MEMS v.3 IMECE2001/MEMS-23890, pp. 639-645.
Svec, F.; Peters, E.C.; Sýkora, D.; and Fréchet, J.M.J.; “Design of the monolithic polymers used in capillary electrochromatography columns”Journal of Chromatography A, v.887, 2000; pp. 3-29.
Paul, P.H.; “Electrokinetic Pumps and Actuators”; Sandia Report SAND 2000-8218; Mar. 2000; 30 pp.
Paul, P.H.; “Microfluidic Engineering”; Sandia Report SAND 99-8212; Dec. 1998; 22 pp.

Affiliated with

Also associated with

Rating

High-pressure microhydraulic actuator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High-pressure microhydraulic actuator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-pressure microhydraulic actuator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2801628