Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2007-01-09
2007-01-09
Dougherty, Thomas M. (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
Reexamination Certificate
active
10847791
ABSTRACT:
A multilayered piezoelectric/electrostrictive device is provided, including a substrate, a plurality of piezoelectric/electrostrictive portions, and a plurality of electrodes. The piezoelectric/electrostrictive portions and the electrodes are alternately layered on the substrate, and the piezoelectric/electrostrictive portion positioned in the lowermost layer is anchored to the substrate directly or through an electrode. The ratio (α=A/B) of the average particle size (A) (μm) of the piezoelectric/electrostrictive ceramic of the piezoelectric/electrostrictive portion to the thickness (B) (μm) of the piezoelectric/electrostrictive portion satisfies the relationship expressed by “0.02≦α≦0.6” in each of the piezoelectric/electrostrictive portions.
REFERENCES:
patent: 6107121 (2000-08-01), Diffenderfer et al.
patent: 6140746 (2000-10-01), Miyashita et al.
patent: 6565997 (2003-05-01), Kashiwaya
patent: 2003/0067251 (2003-04-01), Kashiwaya et al.
patent: 2003/0072972 (2003-04-01), Kashiwaya et al.
patent: 2004/0051422 (2004-03-01), Kashiwaya et al.
patent: 2005/0111163 (2005-05-01), Ito et al.
patent: 2005/0191518 (2005-09-01), Solberg
patent: 0 794 579 (1997-09-01), None
patent: 1 045 460 (2000-10-01), None
patent: 1 321 986 (2003-06-01), None
patent: 1 321 987 (2003-06-01), None
patent: 42-20029 (1942-10-01), None
patent: 44-17103 (1969-07-01), None
patent: 45-8145 (1970-03-01), None
patent: 50-3519 (1975-02-01), None
patent: 60-102779 (1985-06-01), None
patent: 64-018960 (1989-01-01), None
patent: 02-035785 (1990-02-01), None
patent: 07-315926 (1995-12-01), None
patent: 9-223831 (1997-08-01), None
patent: 11-029357 (1999-02-01), None
patent: 2001-181033 (2001-07-01), None
patent: 2002-217464 (2002-08-01), None
patent: 2002-217465 (2002-08-01), None
patent: 2002-261341 (2002-09-01), None
Hiromu Ouchi, Masamitsu Nishida, and Shigeru Hayakawa,Piezoelectric Properties of Pb(Mg⅓Nb⅔)O3-PbTiO3-PbZrO3Ceramics Modified with Certain Additives, Journal of The American Ceramic Society, vol. 49, No. 11, Nov. 21, 1966, pp. 577-582.
Uchino K et al: “Destruction Mechanism of Multilayer Ceramic Actuators”, Proceedings of the 8THIEEE International Symposium on Applications of Ferroelectrics (ISAF '92), Greenville, SC, USA Aug. 30-Sep. 2, 1992, New York, NY, USA IEEE, US, Aug. 30, 1992, pp. 195-198, XP010102776, ISBN: 0-7803-0465-9.
Ebigase Takashi
Shimizu Hideki
Burr & Brown
Dougherty Thomas M.
NGK Insulators Ltd.
LandOfFree
Multilayered piezoelectric/electrostrictive device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multilayered piezoelectric/electrostrictive device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multilayered piezoelectric/electrostrictive device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3787309