Moisture removal from visual glass surfaces by dielectric heatin

Details Moisture removal from visual glass surfaces by dielectric heatin Moisture removal from visual glass surfaces by dielectric heatin

1988-11-21

1989-07-04

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1057, 219 10491, 219203, H05B 654

Patent

active

048453293

ABSTRACT:
In an automotive vehicle having a visual glass pane subject to collecting vision obscuring moisture in the form of ice, frost, mist, fog, etc., apparatus is provided for removing the collected moisture. Specifically, the apparatus comprises a transparent layer of dielectric material underlying the glass pane in heat conducting relationship thereto, and means for producing dielectric heating of the dielectric material to thereby heat the glass and remove the collected moisture. Preferably, the layer of dielectric material is a polymer film and the means for producing dielectric heating includes a pair of transparent electrodes extending over the layer of dielectric material. For ease of fabrication, the pair of electrodes may be interdigitated on the same side of the layer of dielectric material.

REFERENCES:
patent: 2212522 (1940-08-01), Hart, Jr. et al.
patent: 2263063 (1966-07-01), Marriott et al.
patent: 2773160 (1956-12-01), Campbell et al.
patent: 2773162 (1956-12-01), Christensen
patent: 3409759 (1968-11-01), Boicey et al.
patent: 3475588 (1969-10-01), McMaster
patent: 4728547 (1988-03-01), Vaz et al.
H. G. Craighead, Julian Cheng, and S. Hackwood, New Display Based on Electrically Induced Index Matching in an Inhomogeneous Medium, Appl. Phys. Lett. 40(1), p. 22, 1 Jan. 22, 1982.
James L. Fergason, Polymer Encapsulated Nematic Liquid Crystals for Display and Light Control Applications, SID Digest of Technical Papers 16, p. 68, 1985.
J. W. Doane, N. A. Vaz, B.-G. Wu, and S. Zumer, Field Controlled Light Scattering From Nematic Microdroplets, Appl. Phys. lett. 48(4), p. 269, Jan. 27, 1986.
Nuno A. Vaz, George W. Smith, and G. Paul Montgomery, Jr., A Light Control Film Composed of Liquid Crystal Droplets Dispersed in an Epoxy Matrix, Mol. Cryst. Liq. Cryst., vol. 146, p. 17, 1987.
T. W. Dakin, Insulating Materials, "American Electrician's Handbook", McGraw-Hill, New York, p. 4-124, 1981.
Nuno A. Vaz and G. Paul Montgomery, Jr., Refractive Indices of Polymer-Dispersed Liquid Crystal Film Materials: Epoxy Based Systems, J. Appl. Phys. 62(8), Oct. 15, 1987.
Lev Mikhaylovich Blinov, Electro-Optical and Magneto-Optical Properties of Liquid Crystals, John Wiley & Sons Limited,New York, Chapter 2, 1983.
A. R. Blythe, Electrical Properties of Polymers, Cambridge University Press, Cambridge, 1979.
M. Schadt, Dielectric Properties of Some Nematic Liquid Crystals with Strong Positive Dielectric Anisotropy, J. Chem. Phys. 56, p. 1494, Feb. 15, 1972.
M. Schadt, Low-Frequency Dielectric Relaxations in Nematics and Dual-Frequency Addressing of Field Effects, Mol. Cryst. Liq. Cryst., vol. 89, pp. 77, 1982.
M. Schadt, Effects of Dielectric Relaxations and Dual-Frequency Addressing on the Electro-Optics of Guest-Host Liquid Crystal Displays, Appl. Phys. Lett. 41(8), Oct. 15, 1982.
W. H. de Jeu and Th. W. Lathouwers, Mol. Cryst. Liq. Cryst., vol. 26, p. 225, 1982.
G. Baur, A. Stieb, and G. Meier, Controlled Decay of Electrically Induced Deformations in Nematic Liquid Crystals, Appl. Phys. 2, p. 349, 1973.
George W. Smith and Nuno A. Vaz, The Relationship Between Formation Kinetics and Microdroplet Size of Epoxy-Based Polymer-Dispersed Liquid Crystals, Liq. Cryst., vol. 3, No. 5, p. 543, 1988.
T. K. Bose, B. Campbell, S. Yagihara, and J. Thoen, Dielectric-Relaxation Study of Alkylcyanobiphenyl Liquid Crystals Using Time-Doman Spectroscopy, Phys. Rev. A, p. 5767, Dec. 15, 1987.
A. Buka and A. H. Price, Dielectric Relaxation and Order Parameters in the Nematic and Smectic Phases of 4-n-octyl-4'-cyanobiphenyl (8CB), Mol. Cryst. Liq. Cryst. 116, p. 187, 1985.
Frederick G. Yamagishi, Deborah S. Smythe, Leroy J. Miller, and J. David Margerum, Photochemical and Thermal Stability Studies on a Liquid Crystal Mixture of Cyanobiphenyls, Liquid Crystal and Ordered Fluids, vol. 3, p. 475, 1978.
Anna M. Lackner and J. David Margerum, Improved Materials for DC Dynamic Scattering at Elevated Temperatures, Mol. Cryst. Liq. Cryst., vol. 122, p. 111, 1985.
Anna M. Lackner, J. David Margerum, and Camille Van Ast, Near Ultraviolet Photostability of Liquid Crystal Mixtures, Mol. Cryst. Liq. Cryst., vol. 141, p. 289, 1986.

Affiliated with

Also associated with

Rating

Moisture removal from visual glass surfaces by dielectric heatin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Moisture removal from visual glass surfaces by dielectric heatin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Moisture removal from visual glass surfaces by dielectric heatin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-854515