Abstract: Inductive devices, i.e., transformers, coils, inductors, etc. are produced from a rolled flexible circuit. The flexible circuit is comprised of a dielectric substrate having a circuit pattern thereon. The circuit pattern is configured such that, upon rolling, one or more coils is formed thereby defining an inductor, transformer, etc. Additionally, these inductive devices may be easily shielded using a ground plane in the flexible circuit. The rolled flexible circuit may be secured in several ways including an adhesive or by using a thermoplastic bonding layer which acts to heat seal the circuit together. The inductive devices of the present invention may be wrapped or rolled about a permeable core which improves inductance. Inductor devices manufactured in accordance with the present invention have the advantages of being small, surface mountable, inexpensive to manufacture and being capable of insertion onto printed wiring boards using automated insertion equipment.

Abstract: Complex block multipolymer surfactants comprising (a) a siloxane polymer terminated with groups containing a hydroxyl(--OH), (b) one or more diols and (c) a diisocyanate and foam compositions of polyurethane employing said surfactants as a stabilizer.

Abstract: A heat insulating assembly and method for making same, the heat insulating assembly adapted to be mounted with a building, and having a first panel with a second panel secured thereto, forming a continuous open gap adjacent each open end of the second panel wherein an end closure member closes each of the continuous open gaps adjacent the open ends to substantially, fully enclose the area between the panels for providing an insulating air-space therebetween.