Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2006-04-20
2010-11-02
Benson, Walter (Department: 2837)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S31300R, C310S320000, C310S366000
Reexamination Certificate
active
07825568
ABSTRACT:
A composite acoustic wave device (AWD) which is adapted for operation at high ambient pressures is provided. The AWD comprises two piezoelectric plates in back to back relationship, with electrodes disposed between the plates. The plates are bonded so as to neutralize the effects of external pressure. Further disclosed is a sensor utilizing the AWD and methods for utilizing such AWD for physical measurements in high pressure environments. An optional cavity formed between the piezoelectric plates offers the capability to measure the pressure and to further neutralize the residual effects of the pressure on measurement accuracy.
REFERENCES:
patent: 4175243 (1979-11-01), Corbett
patent: 4312228 (1982-01-01), Wohltjen
patent: 4535631 (1985-08-01), Shina
patent: 4769882 (1988-09-01), Rosen et al.
patent: 5565724 (1996-10-01), Hachigo et al.
patent: 5633616 (1997-05-01), Goto
patent: 5877581 (1999-03-01), Inoi et al.
patent: 5880552 (1999-03-01), McGill et al.
patent: 6378370 (2002-04-01), Haskell et al.
patent: 7514844 (2009-04-01), Unkrich
patent: 7666152 (2010-02-01), Ein-Gal
patent: 2006/0244346 (2006-11-01), Iwata
R.L. Baer, C.A. Flory, M. Tom-Moy and D.S. Solomon, “STW Chemical Sensors,” Proc. 1992 Ultrasonics Symp., pp. 293-298 (1991).
Takahiro Inoue, Masahiro Yoshimatsu, and Masanobu Okazaki, “Miniaturization of Angular Rate Sensor Element Using Bonded Quartz Tuning Fork”, Proceedings of the 2003 IEEE International Frequency Control Symposium and PDA Exhibition Jointly with the 17th European Frequency and Time Forum, 2003.
Arthur Ballato, Theodore Lukaczek, “Stacked Crystal Filters”, Proceedings of the IEEE, Oct. 1973, IEEE.
Arthur Ballato, “The Stacked-Crystal Filter”, Proceedings, 1975 IEEE international Symposium on Circuits and Systems, Apr. 1975, IEEE.
Gandsas et al. , “Advanced Therapy in Minimally Invasive Surgery”, (Talmini, © 2006 BC Decker of Hamilton, ON, Canada, ISBN 1-55009-238-3).
Shri S. Shankar, “Well Logging Techniques And Formation Evaluation- An Over View”, US Department of Energy report EM 1110-1-1802, “Engineering and Design—Geophysical Exploration for Engineering and Environmental Investigations”.
Hata & Shimizu, “Unidirectional surface-acoustic-wave transducer with meander and interdigital electrodes”, Electronics and Communications in Japan, vol. 61, Jul. 1978, p. 52-60.
Benson Walter
Rosenau Derek J
Saltamar Innovations
Vectron International, Inc.
Wertsberger Shalom
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