Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2007-10-30
2007-10-30
Dougherty, Thomas M. (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
Reexamination Certificate
active
10542440
ABSTRACT:
A non-symmetric drive type piezoelectric ceramic transformer has been disclosed in the present invention. The non-symmetric drive type piezoelectric ceramic transformer has a rectangular piezoelectric ceramic conductor. Along the length of rectangular piezoelectric ceramic conductor, it is divided into three zones: the first zone is the oscillation node accommodate zone of the length adjusting, that the change of length can adjust the resonance frequency and the oscillation node of the piezoelectric ceramic transformer; the second zone is input drive zone, which upper of lower surface have been coated with electrodes and polarized in the direction of the thickness; the third zone is the output generation zone, which output terminals are coated with electrodes and polarized in the direction of the length of the conductor. The piezoelectric ceramic transformer having above structure has the advantages of smaller dimension, less input phase changes, less generating heat, higher efficiency, and the piezoelectric ceramic transformer has the adjustable resonance frequency and the oscillation node, simply formation process, lower cost of fabrication. The piezoelectric ceramic transformer can be used in high voltage power sources, and back-light sources of liquid crystal display to drive cold cathode florescent lamps.
REFERENCES:
patent: 5892318 (1999-04-01), Dai et al.
patent: 6084336 (2000-07-01), Kawasaki et al.
patent: 6278226 (2001-08-01), Danov et al.
patent: 6291925 (2001-09-01), Jacobson
patent: 7-176804 (1995-07-01), None
patent: 8-139383 (1996-05-01), None
patent: 08-191161 (1996-07-01), None
patent: 09-83032 (1997-03-01), None
patent: 09-92901 (1997-04-01), None
patent: 09-116205 (1997-05-01), None
patent: 10-200174 (1998-07-01), None
Chen Yaoqiang
Liu Quanbao
Birch & Stewart Kolasch & Birch, LLP
Dougherty Thomas M.
Xi'an Kong Hong New Materials Sci-Tech Co., Ltd.
LandOfFree
Non-symmetric drive type piezoelectric ceramic transformer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Non-symmetric drive type piezoelectric ceramic transformer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-symmetric drive type piezoelectric ceramic transformer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3894750