Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1994-08-29
1996-03-26
Dougherty, Thomas M.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310328, 310330, H01L 4108
Patent
active
055023452
ABSTRACT:
An actuator including a unitary ceramic element capable of bending in resse to an applied voltage. The ceramic has a first region of lower resistivity in contact with a second region of higher resistivity. There is no seam where said regions contact each other. The first region contains an additive in an amount needed to reduce resistivity thereof relative to said second region. The second region is devoid of additive or contains a different additive that raises resistivity thereof or contains the same additive in a different amount than in the first region.
REFERENCES:
patent: 4524294 (1985-06-01), Brody
patent: 4568848 (1986-02-01), Ogawa
patent: 4862029 (1989-08-01), Kasai et al.
Kahn Manfred
Wu Carl C.
Zain Saadi
Dougherty Thomas M.
Kap George A.
McDonnell Thomas E.
The United States of America as represented by the Secretary of
LandOfFree
Unitary transducer with variable resistivity does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Unitary transducer with variable resistivity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Unitary transducer with variable resistivity will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-918178