Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2005-07-19
2005-07-19
Dougherty, Tom (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S365000, C310S369000
Reexamination Certificate
active
06919669
ABSTRACT:
An electro-active transducer for sonic applications includes a ferroelectric material sandwiched by first and second electrode patterns to form a piezo-diaphragm coupled to a mounting frame. When the device is used as a sonic actuator, the first and second electrode patterns are configured to introduce an electric field into the ferroelectric material when voltage is applied to the electrode patterns. When the device is used as a sonic sensor, the first and second electrode patterns are configured to introduce an electric field into the ferroelectric material when the ferroelectric material experiences deflection in a direction substantially perpendicular thereto. In each case, the electrode patterns are designed to cause the electric field to: i) originate at a region of the ferroelectric material between the first and second electrode patterns, and ii) extend radially outward from the region of the ferroelectric material (at which the electric field originates) and substantially parallel to the plane of the ferroelectric material. The mounting frame perimetrically surrounds the peizo-diaphragm and enables attachment of the piezo-diaphragm to a housing.
REFERENCES:
patent: 2410113 (1946-10-01), Turner, Jr.
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: 2895062 (1959-07-01), Abbott
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: 3609416 (1971-09-01), Epstein
patent: 3832580 (1974-08-01), Yamamuro et al.
patent: 3978353 (1976-08-01), Kinoshita
patent: 4051455 (1977-09-01), Fowler
patent: 4284921 (1981-08-01), Lemonon et al.
patent: 4401911 (1983-08-01), Ravinet et al.
patent: 4409681 (1983-10-01), White
patent: 4452084 (1984-06-01), Taenzer
patent: 4518889 (1985-05-01), 'T Hoen
patent: 4525645 (1985-06-01), Shirley et al.
patent: 4581556 (1986-04-01), Yamamoto
patent: 4695988 (1987-09-01), Banno
patent: 4697195 (1987-09-01), Quate et al.
patent: 4803393 (1989-02-01), Takahashi
patent: 4823041 (1989-04-01), Inoue et al.
patent: 4865042 (1989-09-01), Umemura et al.
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: 5291090 (1994-03-01), Dias
patent: 5327041 (1994-07-01), Culp
patent: 5374863 (1994-12-01), Mochizuki et al.
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: 5862275 (1999-01-01), Takeuchi et al.
patent: 5991239 (1999-11-01), Fatemi-Booshehri 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: 6291928 (2001-09-01), Lazarus 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: 6353277 (2002-03-01), Hahn-Jose
patent: 6356007 (2002-03-01), Silva
patent: 6361196 (2002-03-01), Boucheron et al.
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, ( Jun. 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.
Fox Robert L.
Aguirrechea J.
Dougherty Tom
Hammerle Kurt G.
The United States of America as represented by the Administrator
LandOfFree
Electro-active device using radial electric field... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electro-active device using radial electric field..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electro-active device using radial electric field... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3432926