Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2005-02-15
2005-02-15
Dougherty, Thomas M. (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S344000, C310S348000, C310S365000, C310S368000, C310S333000
Reexamination Certificate
active
06856073
ABSTRACT:
A fluid-control electro-active device includes a piezo-diaphragm made from a ferroelectric material sandwiched by first and second electrode patterns configured to introduce an electric field into the ferroelectric material when voltage is applied thereto. The electric field originates at a region of the ferroelectric material between the first and second electrode patterns, and extends radially outward from this region of the ferroelectric material and substantially parallel to the plane of the ferroelectric material. The piezo-diaphragm deflects symmetrically about this region in a direction substantially perpendicular to the electric field. An annular region coupled to and extending radially outward from the piezo-diaphragm perimetrically borders the piezo-diaphragm. A housing is connected to the annular region and defines at least one fluid flow path therethrough with the piezo-diaphragm disposed therein.
REFERENCES:
patent: 2540187 (1951-02-01), Cherry, Jr.
patent: 2540194 (1951-02-01), Ellett
patent: 2836737 (1958-05-01), Crownover
patent: 2836738 (1958-05-01), Crownover
patent: 2963597 (1960-12-01), Gerber
patent: 2967956 (1961-01-01), Dranetz et al.
patent: 3114849 (1963-12-01), Poschenrieder
patent: 3215078 (1965-11-01), Stec
patent: 3457543 (1969-07-01), Akervold et al.
patent: 3510698 (1970-05-01), Massa
patent: 3562764 (1971-02-01), Fujishima
patent: 3857049 (1974-12-01), Zoltan
patent: 4051455 (1977-09-01), Fowler
patent: 4284921 (1981-08-01), Lemonon et al.
patent: 4379246 (1983-04-01), Guntersdorfer et al.
patent: 4401911 (1983-08-01), Ravinet et al.
patent: 4409681 (1983-10-01), White
patent: 4439706 (1984-03-01), Matsuoka et al.
patent: 4452084 (1984-06-01), Taenzer
patent: 4485325 (1984-11-01), Yamamoto et al.
patent: 4581556 (1986-04-01), Yamamoto
patent: 4697195 (1987-09-01), Quate et al.
patent: 4803393 (1989-02-01), Takahashi
patent: 4944659 (1990-07-01), Labbe et al.
patent: 5081995 (1992-01-01), Lu et al.
patent: 5122993 (1992-06-01), Hikita et al.
patent: 5262696 (1993-11-01), Culp
patent: 5291090 (1994-03-01), Dias
patent: 5327041 (1994-07-01), Culp
patent: 5503034 (1996-04-01), Amano et al.
patent: 5592042 (1997-01-01), Takuchi et al.
patent: 5631040 (1997-05-01), Takuchi et al.
patent: 5663505 (1997-09-01), Nakamura
patent: 5697195 (1997-12-01), Maylon
patent: 5838350 (1998-11-01), Newcombe et al.
patent: 5852337 (1998-12-01), Takeuchi et al.
patent: 5862275 (1999-01-01), Takeuchi et al.
patent: 6025671 (2000-02-01), Boecking
patent: 6033191 (2000-03-01), Kamper et al.
patent: 6042345 (2000-03-01), Bishop et al.
patent: 6069433 (2000-05-01), Lazarus et al.
patent: 6071087 (2000-06-01), Jalink, Jr. et al.
patent: 6071088 (2000-06-01), Bishop et al.
patent: 6072267 (2000-06-01), Atsuta
patent: 6074178 (2000-06-01), Bishop et al.
patent: 6091182 (2000-07-01), Takeuchi et al.
patent: 6106245 (2000-08-01), Cabuz
patent: 6265811 (2001-07-01), Takeuchi et al.
patent: 6285116 (2001-09-01), Murai et al.
patent: 6297578 (2001-10-01), Takeuchi et al.
patent: 6323580 (2001-11-01), Bernstein
patent: 6341732 (2002-01-01), Martin et al.
patent: 6351196 (2002-02-01), Nakamura et al.
patent: 6356007 (2002-03-01), Silva
patent: 54-138392 (1979-10-01), None
patent: 59-174010 (1984-10-01), None
patent: WO 8707218 (1987-12-01), None
Hari Singh Nalwa, “Ferroelectric Polymers; Chemistry, Physics, and Applications,” Marcel Dekker, Inc., p. 710-711.
Shinichi Sakai et al, Presented at the 78th Convention of the Audio Engineering Society, “Digital-to-analog Conversion by Piezoelectric Headphone,” AES, p. 1-18, ( May 3, 1985).
R.G. Bryant et al, Proceedings, Actuator 2002, Paper A1.3, “Radial Field Piezoelectric Diaphragms,” 6 pages, ( June 10, 2002).
R. G. Bryant et al, Presented at The First World Congress on Biomimetics and Artificial Muscles, Albuquerque NM, “The Effect of Radial Electric Fields on Piezoceramics and the Application of these Devices,” 6 pages, ( Dec. 9, 2002).
Bryant Robert G.
Working Dennis C.
Dougherty Thomas M.
Hammerle Kurt G.
The United States of America as represented by the Administrator
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