Heatable article having a configured heating member
A technology for products and conductive parts, which is applied in the field of windshields, which can heat the transparent body of automobiles, and can solve the problems of uneven heating of the surface of windshields.
Inactive Publication Date: 2010-11-03
VITRO FLAT GLASS LLC
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Problems solved by technology
[0008] There is also the problem of uneven heating of the surface of the draft shield when the coating has communication windows
Method used
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[0035] When shown in the drawings, spatial and directional terms used herein, for example, "inner", "outer", "left", "right", "upper", "lower", "horizontal", "vertical " etc. are related to the present invention. It is evident, however, that the invention may assume various alternative orientations and, therefore, such terms are not to be viewed as limiting. Furthermore, in all instances where the term "about" is utilized, numbers used in the specification and claims expressing dimensions, physical properties, etc., are considered to be modifiable. Accordingly, unless indicated to the contrary, the numerical values used in the following specification and claims may vary depending upon the properties required in order to carry out the invention. At least the application of the doctrine of equivalents is not intended to limit the scope of the claims, which should at least be construed in light of the number of reported significant figures and by applying the usual principles ...
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Abstract
A heatable article, e.g. a heatable windshield, having a generally trapezoidal shape has a conductive member, e.g. a conductive coating, between and in contact with a pair of spaced bus bars having different lengths. Selected portions of the coating between the bus bars are segmented to reduce the difference in watt density between the coatings at the bus bars when current moves through the coating. In one non-limiting embodiment, the width of the segments at the longer bus bar is less than the width of the segments at the longer bus bar. With this configuration, the watt density at the bottom of the windshield is increased to more efficiently remove ice and snow. In another non-limiting embodiment, the coating has a communication window to pass frequencies of the electromagnetic spectrum, e.g. RF frequencies, to obtain information from within the vehicle. The coating surrounding the conductive window has break lines to segment the coating to eliminate hot spot around the periphery ofthe communication window.
Description
[0001] relevant patent application [0002] The patent application entitled "Edge Sealing Of A Laminated Transparency," filed July 24, 2002, in the names of Bruce A. Bartrug, Allen R. Hawk, Robert N. Pinchok, and James H. Schwartz may be used in the practice of this invention. Interlayer composites published in U.S. Patent Application Serial No. 10 / 201,863 and in the name of Allen R. Hawk, filed July 24, 2002, entitled "Eliminating Hot Spots At End Portions Of Bus Bars Of A Heatable TransparencyHaving An Electrically Conductive Member" Serial No. 10 / 201,864 U.S. Patent Application Published Bus Bar Arrangement. US Patent Applications Serial No. 10 / 201,863 and Serial No. 10 / 201,864 are incorporated herein by reference. technical field [0003] The present invention relates to an article, such as a transparency, provided with a heatable component, such as an electrically conductive component, applied to the surface of the article, and more particularly, to a heatable automotive...
Claims
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IPC IPC(8): H05B3/84H05B3/86
CPCB32B17/10036H05B2203/013H05B3/86H05B2203/008B32B17/10293B32B17/10192
Inventor 查理斯·S·费尔兹尔
Owner VITRO FLAT GLASS LLC