Abstract: A novel polyurethane can be used to form asymmetrical laminates with glass and plastics such as polycarbonate at temperatures below 150.degree. F. The polyurethane is a reaction product of a diisocyanate, a high molecular weight polyether glycol or polyester glycol, and at least two different diols.

Abstract: A novel polyurethane can be used to form asymmetrical laminates with glass and plastics such as polycarbonate at temperatures below 150.degree. F. The polyurethane is a reaction product of a diisocyanate, a high molecular weight polyether glycol or polyester glycol, and at least two different diols.

Abstract: A machine and method for roller swaging hydraulic fitting sleeves onto metallic tubing comprises a tapered roller mandrel expander driven at a first high speed for rapidly expanding the tubing and at a second low speed until the drive torque reaches a final preselected value for preventing springback of the tubing and accurately controlling the amount of swaging. A torque transducer monitors mandrel loading for automatic control of machine operations. The machine provides an automatic swaging cycle inserting the expander, engaging the tapered mandrel, rotating the mandrel at the high and low speeds, reversing rotation of the mandrel for disengagement of the expander, and withdrawing the mandrel and the expander. Tare torque is measured in each swaging cycle, compensating for changing mandrel bearing drag, etc.

Abstract: An analog touch panel comprising two flexible elements, each comprising a flexible membrane coated with a thin layer of conductive material. The elements are oriented so that the conductive coatings are facing each other when the touch panel is assembled. A network of diametrically opposite segmented busbars is formed on the conductive surface of each membrane by screening a conductive ink thereon. Patterned conductive trace members electrically couple the busbars to a conductive trunk, the tail end of which terminates at a connector device. The traces are patterned in a manner such that compensation is provided for positionally caused differences in resistance which otherwise would occur due to the use of conductive inks.

Abstract: A novel polyurethane can be used to form asymmetrical laminates with glass and plastics such as polycarbonate at temperatures below 150.degree. F. The polyurethane is a reaction product of a diisocyanate, a high molecular weight polyether glycol or polyester glycol, and at least two different diols.

Abstract: There is provided a flexible electric heater element and a process for making such a heater element.The flattened ends of two lead wires are disposed on a first layer of material which includes a vulcanizable elastomer. The ends of a resistance wire are placed in electrical contact with the flattened ends of the two lead wires. A second layer of material, which includes a vulcanizable elastomer, is placed over the first layer sandwiching between the layers the resistance wire in electrical contact with the flattened ends of the two lead wires. The other ends of the two lead wires extend externally to the first and second layers of material.The elastomer is vulcanized and the flattened ends of the lead wires are held in permanent electrical contact with the ends of the resistance wire by forces exerted by the vulcanized elastomer.

Abstract: There is provided a flexible electric heater element and a process for making such a heater element.The flattened ends of two lead wires are disposed on a first layer of material which includes a vulcanizable elastomer. The ends of a resistance wire are placed in electrical contact with the flattened ends of the two lead wires. A second layer of material, which includes a vulcanizable elastomer, is placed over the first layer sandwiching between the layers the resistance wire in electrical contact with the flattened ends of the two lead wires. The other ends of the two lead wires extend externally to the first and second layers of material.The elastomer is vulcanized and the flattened ends of the lead wires are held in permanent electrical contact with the ends of the resistance wire by forces exerted by the vulcanized elastomer.

Abstract: A pair of overlapping, normally spaced conductive sheets (16,18) have sufficient flexibility between them to permit electrical contact when touched. One sheet has spaced, approximately parallel electrodes (20,21). The other sheet has spaced approximately parallel electrodes (22,23) transverse to the electrodes of the one sheet. A source of electrical power (10,12) is alternatively connected across the electrodes of one sheet to the exclusion of the other sheet. One electrode of each sheet is coupled to a signal processing circuit (32) having a high impedance differential input.

Abstract: This aircraft windshield resistant to penetration by impact with birds has a plurality of transparent plastic sheets bonded together with flexible interlayers. The innermost sheet of the laminate is formed of a polycarbonate. A metal bearing strip is adhesively bonded to the inside face of the innermost sheet along at least one edge with the inboard edge of the bearing strip curling gradually away from the inner face of the innermost plastic sheet and with a wedge-shaped body of flexible adhesive therebetween. A row of countersunk attachment holes along the edge of the windshield extends through the transparent sheets and the bearing strip and each contains a bushing for receiving a flat head bolt for connecting the windshield to an airframe structure. The inner end of each bushing has an enlarged shoulder having a length not less than the thickness of the bearing strip for bearing on the airframe structure.

Abstract: A laminated electrically heatable window has a transparent electrically conductive layer embedded in the window to act as a sheet resistor, and conductive bus bars embedded in the window in contact with the resistive layer. A portion of each bus bar extends outside an edge of the window to a terminal connection for making electrical contact with a harness cable leading to an electric current source such as an automobile alternator. Each terminal connection comprises separate electrical contacts on the ends of the bus bar and the cable harness for forming a cooperating pin and socket connection normal to the bus bar. The electrical contacts are pressure fitted together and hermetically sealed from end-to-end in an electrically insulating, protective sleeve.

Abstract: There is described a solar cell panel consisting of an outer rigid transparent faceply of glass or plastic material to which are applied at least two layers of plastic such as polyvinyl butyral between which are positioned a plurality of solar cell wafers. A thin flexible film of polyethylene terephthalate forms the other outer surface of the panel. The panel is manufactured by laminating the materials together and allowing the margins of the plastic film to extend beyond the polyvinyl butyral layers so that the film can be brought into direct contact and sealed to a rigid base plate, forming a fully encapsulating structure. The assembled structure is then evacuated to withdraw air and to squeeze the layers together to promote adhesion. The evacuated laminated structure is then placed in an oven for applying heat and pressure to the laminated structure for permanent bonding. After cooling, excess film is trimmed from around the edges of the rigid face plate.

Abstract: A method for producing clear, cured transparent polycarbonate laminates comprises directly bonding a sheet of transparent thermosetting polyurethane sheet to a polycarbonate sheet to produce a laminate, heating the laminate above the softening point of the polycarbonate sheet, and forming the laminate to a desired curvature.

Abstract: A laminated electrically heatable window has a transparent electrically conductive layer embedded in the window to act as a sheet resistor, and conductive bus bars embedded in the window in contact with the resistive layer. A portion of each bus bar extends outside an edge of the window to a terminal connection for making electrical contact with a harness cable leading to an electric current source such as an automobile alternator. Each terminal connection comprises separate electrical contacts on the ends of the bus bar and the cable harness for forming a cooperating pin and socket connection normal to the bus bar. The electrical contacts are pressure fitted together and hermetically sealed from end-to-end in an electrically insulating, protective sleeve.

Abstract: Described herein is a method of monitoring surface resistivity distribution resulting from vacuum deposition of thin, transparent metal films on moving plastic film or other transparent substrates. The process comprises applying to the metallized film electromagnetic radiation and detecting a band width of electromagnetic radiation transmitted through or reflected from the metallized film in the near-infrared region, more particularly within the wavelength range of about 1.5 to 3.0 microns. The detected band width permits excellent correlation between emanant radiation and local conductivity or, reciprocally, resistivity of vacuum deposited gold, silver, and copper. Vacuum deposition can occur, e.g., by vacuum evaporation or sputtering. The metallized films are useful in the production of electrically heated transparent closures such as for automobile windshields.