Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1991-10-02
1992-12-15
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310334, 310800, 310321, 310322, H01L 4108
Patent
active
051720248
ABSTRACT:
A device to eliminate ice formed on the surface of a wall, notably on the surface of an optical or radio-electric window, comprises a piezoelectric material having a vibrating active surface that mechanically cooperates with the wall to be de-iced, and means for the polarization of this piezoelectric material, comprising an AC voltage source and conducting or semiconducting electrodes placed in contact with this material according to a geometry capable of generating, within this material, an acoustic wave that has a direction of vibration which is oriented longitudinally and/or transversally to said surface to be de-iced, the amplitude of this vibration being sufficient to respectively detach and/or break the deposit of ice formed on said surface. The piezoelectric material is preferably a ferroelectric polymer such as a polymer of the group comprising PVF.sub.2, PVF.sub.2 -TrFE, PVDCN-VAc, PVF.sub.2 -TFE and the mixture of these polymers with one another and/or with PMMA or PEMA. The electrodes are preferably formed into a thin layer deposited on the surface of the piezoelectric material, and their material is then advantageously a material of the group comprising resistive indium-tin oxide, the polymers that are conductive in a matrix, hydrogenated amorphous silicon and polyimides charged with organic salts.
REFERENCES:
patent: 3816774 (1974-06-01), Ohnuki et al.
patent: 4028566 (1977-06-01), Franssen
patent: 4283461 (1981-08-01), Wooden
patent: 4363991 (1982-12-01), Edelman
patent: 4427609 (1984-01-01), Broussoux
patent: 4500377 (1985-02-01), Brousseux
patent: 4521322 (1985-06-01), Broussoux
patent: 4670074 (1987-06-01), Broussoux
patent: 4732351 (1988-03-01), Bird
patent: 4768256 (1988-09-01), Motoda
patent: 4820952 (1989-04-01), Lee
patent: 4849668 (1989-07-01), Crawley
patent: 5025187 (1991-06-01), Fujie et al.
Broussoux Dominique
Ceccaldi Michel C.
Leclerc Pierre
"Thomson-CSF"
Budd Mark O.
LandOfFree
Device for the removal of the ice formed on the surface of a wal does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for the removal of the ice formed on the surface of a wal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for the removal of the ice formed on the surface of a wal will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2095656