Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1987-03-13
1987-12-29
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310331, 310369, 361290, H01L 4108
Patent
active
047163313
ABSTRACT:
An electrically variable three terminal monomorphic piezoelectric capacitor is manufactured with thick or thin film hybrid microelectronic circuit technology. A first capacitor plate and a ridge, which substantially surrounds and extends above the first capacitor plate, are formed on the surface of a substrate. A monomorphic piezoelectric wafer having a control plate and a second capacitor plate on opposing surfaces is bonded to the upper surface of the ridge. During bonding, a force is applied at the center of the wafer which fixes a permanent bow in the wafer in the direction of the first capacitor plate. A four terminal monomorphic embodiment and three and four terminal bimorphic embodiments are also described.
REFERENCES:
patent: 2243921 (1941-06-01), Rust et al.
patent: 2321285 (1943-06-01), Ehret et al.
patent: 2368643 (1945-02-01), Crosby
patent: 2487962 (1949-11-01), Arndt, Jr.
patent: 2633543 (1953-03-01), Howatt
patent: 2677799 (1954-05-01), Foster et al.
patent: 2756353 (1956-07-01), Samsel
patent: 3076903 (1963-02-01), Schwartz
patent: 3588552 (1971-06-01), Schafft
patent: 3646413 (1972-02-01), Oomen
patent: 3949246 (1976-04-01), Lohrmann
patent: 4426406 (1984-01-01), Brooks et al.
patent: 4467394 (1984-08-01), Grantham et al.
patent: 4490772 (1984-12-01), Blickstein
patent: 4530029 (1985-07-01), Beristain
Budd Mark O.
Downey Joseph T.
Kahler Mark P.
McKinley Martin J.
Motorola Inc.
LandOfFree
Electrically variable piezoelectric hybrid capacitor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electrically variable piezoelectric hybrid capacitor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrically variable piezoelectric hybrid capacitor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-464622