Method of preparing lightweight window anti-static circuit and optional heating circuit
First Claim
1. A method of making a composite transparency comprising applying a pattern of wire to an opposite pair of major surfaces of a first layer of rigid transparent plastic selected from the class consisting of acrylic plastic and polycarbonates, one of said patterns comprising relatively widely spaced runs of continuous wire and the other of said patterns comprising relatively closely spaced runs of continuous wire, press polishing said layer of rigid transparent plastic at sufficient heat and pressure to smooth the opposite major surfaces thereof so that the wire is embedded just below each of the opposite major surfaces, attaching suitable terminal means to the wire embedded adjacent each of the opposite surfaces, and fusing a second layer of rigid transparent plastic selected from the class consisting of acrylic plastic and polycarbonates at elevated pressure and temperature against the first layer of plastic having the wires embedded therein to form a composite transparency having wire with widely spaced runs embedded adjacent a major surface thereof and wire with closely spaced runs embedded within the thickness in relatively spaced relation from the opposite major surfaces of side composite transparency.
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Accused Products
Abstract
A method of producing a transparent plastic window containing embedded therein a novel static electricity dissipating circuit (hereinafter referred to as an anti-static circuit), which may also contain a heating circuit insulated therefrom.
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Citations
13 Claims
- 1. A method of making a composite transparency comprising applying a pattern of wire to an opposite pair of major surfaces of a first layer of rigid transparent plastic selected from the class consisting of acrylic plastic and polycarbonates, one of said patterns comprising relatively widely spaced runs of continuous wire and the other of said patterns comprising relatively closely spaced runs of continuous wire, press polishing said layer of rigid transparent plastic at sufficient heat and pressure to smooth the opposite major surfaces thereof so that the wire is embedded just below each of the opposite major surfaces, attaching suitable terminal means to the wire embedded adjacent each of the opposite surfaces, and fusing a second layer of rigid transparent plastic selected from the class consisting of acrylic plastic and polycarbonates at elevated pressure and temperature against the first layer of plastic having the wires embedded therein to form a composite transparency having wire with widely spaced runs embedded adjacent a major surface thereof and wire with closely spaced runs embedded within the thickness in relatively spaced relation from the opposite major surfaces of side composite transparency.
- 7. A method of making a composite transparency comprising applying a pattern of widely spaced wire runs to a major surface of a first layer of rigid transparent acrylic plastic, applying a pattern of closely spaced wire runs to a major surface of a second layer of rigid transparent plastic selected from the class consisting of acrylic plastic and polycarbonates, attaching suitable terminal means to end portions of at least several of each of said runs, press polishing said first and second layers to embed said wire runs within and just below said respective major surfaces, assembling said layers with said major surface of said first layer facing away from said second layer and said major surface of said second layer facing said first layer, and fusing said second layer while so assembled against the first layer of plastic having the wires embedded therein to form a composite transparency having wire with widely spaced runs embedded adjacent a major surface thereof and wire with closely spaced runs embedded within the thickness in relatively spaced relation from the opposite major surfaces of said composite transparency.
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13. A method of making a composite transparency comprising applying a pattern of wire to an opposite pair of major surface of a first layer of rigid transparent plastic selected from the class consisting of acrylic plastic and polycarbonates, one of said patterns comprising relatively widely spaced runs of continuous wire and the other of said patterns comprising relatively closely spaced runs of continuous wire, attaching suitable terminal means to the wire adjacent each of the opposite major surfaces, assembling a second layer of rigid transparent plastic selected from the class consisting of acrylic plastic and polycarbonates against the surface of said first layer to which said closely spaced runs are applied, and press polishing said assembly at elevated pressure and temperature to fuse said second layer to the first layer of plastic and to embed the wires therein to form a composite transparency having wire with widely spaced runs embedded adjacent and just below a major outer surface of said transparency and wire with closely spaced runs embedded within the thickness in relatively spaced relation from the opposite, press polished major surfaces of said composite transparency.
Specification