Communications – electrical: acoustic wave systems and devices – Signal transducers – Receivers
Reexamination Certificate
2007-11-13
2007-11-13
Lobo, Ian J. (Department: 3662)
Communications, electrical: acoustic wave systems and devices
Signal transducers
Receivers
C181S122000
Reexamination Certificate
active
11202310
ABSTRACT:
A pressure gradient sensor for seismic and other applications utilizing the principle of diamagnetic drift. The sensor comprises at least one transducer, each transducer made of or containing a medium having at least one species of mobile charged particles such as electrons or holes that exhibit diamagnetic drift under a pressure gradient. A magnet and a pair of electrodes are installed in each transducer. Diamagnetic drift current collected by the electrodes can be measured by an ammeter or similar device, and formulas and methods are disclosed to determine the pressure gradient from the measured current.
REFERENCES:
patent: 4563894 (1986-01-01), Karrer
patent: 4648082 (1987-03-01), Savit et al.
patent: 6832518 (2004-12-01), Berstis
patent: 0 669 169 (1995-08-01), None
“Acoustic Particle Velocity Sensors: Design, Performance, and Applications,” AIP Conference Proceedings 368, Sep. 1995 (Woodbury, New York: American Institute of Physics, (1996).
Chen, F. F. (1984) “Plasmas as Fluids,”Introduction to Plasma Physics and Controlled Fusion,New York: Plenum Press, pp. 53-77.
Dawson, J. H, et al. (1992) “On the Possibility of a Steady State Tokamak,”AIP Conference Proceedings,May 1992, pp. 39-68, XPOO8046642.
Franklin, J. B. and Barry, P. J. (1995) “Acoustic Particle Acceleration Sensors,”AIP Conference Proceedings,Sep. 1995, pp. 144-165, XPOO8046178.
Labelle, J. and Paschmann, G. (1989) “Motions of the Ring Current Inner Edge Inferred from Plasma Measurements”,Journal of Geophysical Research,Jan. 1989, pp. 485-491, XPOO8046645.
Singh, J. (2003) “Electronic and Optoelectronic Properties of Semiconductor Structures”, New York, Cambridge University Press, 440-477.
Steele, M. C. and Vural, B (1969)Wave Interaction in Solid State Plasmas,New York, McGraw-Hill, Inc.
The Electronics Handbook(1996) Beaverton, Oregon: Technical Press, Inc., p. 124.
European Standard Search ReportNo. RS 112184US, May 13, 2005.
ExxonMobil Upstream Research Company
Lobo Ian J.
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