Rogers Corporation

Jeffrey B Otto

Richard T Traskos

Bruce M Arnio

Douglas H Tracy

Michael J Taylor

Samuel Gazit

Brett W Kilhenny

Michael S Lunt

David M Howe

Richard C Berry

Francis J McGarry

Norman L Greenman

Leonard S Calabrese

Donald Greene

Elizabeth L Callan

A flexible circuit is presented having a flexing (cyclic bending) section of lower stiffness than adjacent parts of the circuit. The lower stiffness in the flexing section is achieved by reducing the thickness of the flexing section, either by omitting or removing some or all of the dielectric material of the flexible circuit in the flexing section, or by replacing conventional dielectric material in the flexing section with a polymer of lower modulus of elasticity.

Flexible circuit having flexing section of reduced stiffness, and method

An improved fiber reinforced material for use in the manufacture of gaskets is produced by impregnating a nonwoven fabric with an aqueous dispersion of a rubber and filler. The water is then evaporated out of the impregnated fabric. The final product is formed by curing the rubber under heat and pressure.

Fiber reinforced rubber gasket material

A gasket material comprised of fibrillated aramid fibers, diatomaceous earth and either a polyethylacrylic or polybutylacrylic latex alone or in combination with conventional curatives, antioxidants and pigments. The constituent materials are combined in a beater-addition process, and the pliable gasket material is then formed on conventional paper making equipment.

Compressible soft asbestos free gasket material

A process for the preparation of extrudable polyimide granules comprising heating and compacting a powder containing polyimide particles to form a partially densified porous mass and crushing the mass to form granules which may be ram extruded to give uniform articles of high strength.

Process for preparing extrudable polyimide granules

A process is presented for forming flexible foam, polyurethane foam material having an integral skin, and polyurethane foam laminates, from a thermosetting frothed mixture, particularly a mechanically frothed mixture. Also presented is a flexible polyurethane foam material having an integral skin, and polyurethane foam laminates.

Polyurethane foam product and process of manufacture thereof from

A high density insulating board is produced by a process which includes forming a wet multi-ply board of fibrous material, substantially free of resin, on the roll of a wet cylinder machine, drying the board, placing the dry board in a press, and then hot pressing the board at a differential temperature of about 15.degree. to about 40.degree. F across the board for at least 30 seconds.

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Brooklyn, CT, United States of America

Jeffrey B Otto