Other

Americhem, Inc.

John C Campbell

Vaman G Kulkarni

Lawrence W Shacklette

Christian W Brown

William R Mathew

An anti-intrusion device simulates the sound of a round being chambered in a pump shotgun using metal parts which strike one another. A striker carriage is movably disposed in a sound box for moving between first and second positions to engage metal striker plates and metal striker tabs against sound plates to simulate the chambering sound. A mangle drive assembly is mounted atop the sound box for moving the striker carriage between a forward position and a rearward position, powered by a stepper motor which is actuated to rotate a controlled axial displacement when a trigger mechanism is tripped. Preferably, the trigger mechanism is provided by a light mean sensor in which the light beam is broker by an intruder passing a selected entry point.

Anti-intrusion device for simulating gun cocking

A polymer blend according to the invention of the type including an intrinsically conductive polymer disbursed in a matrix selected from thermoplastic polymers, monomers, polymerizable precursors and combinations thereof is improved by an amount of a non-polymeric polar additive having a boiling point greater than about 100.degree. C. at 760 mm pressure and greater than the processing temperature of the matrix polymer incorporated in the polymer blend, in an amount sufficient to impart an electrical conductivity to the blend which is greater than that of the blend without the non-polymeric polar additive. A blend according to the invention includes a matrix material selected from thermoplastic polymers, monomers and polymer precursors and combinations thereof, and an intrinsically conductive polymer and a non-polymeric highly polar additive, disbursed into a polymer blend and having a conductivity of greater than about 2.5 S/cm. A composition according to the invention includes a precursor selected from polymers and polymerizable monomers, an intrinsically conductive polymer with a conductivity of about 1 to 5 S/cm and a non-polymeric polar additive having a conductivity of greater than that of the blend resulting in a blend having a conductivity greater than about 2 to 5 s/cm. A blend having thermo and conductive stability includes an intrinsically conductive polymer, an insulating thermoplastic polymer, an insulating thermoplastic polymer and an ester-free plasticizer which is thermally stable to at least about 240.degree. C., the blend having a conductivity of greater than 10.sup.-2 S/cm. A method for preparing such compositions and blends is also provided.

Highly conductive polymer blends with intrinsically conductive polymers

An electrically conductive coating composition includes an intrinsically conductive polymer dispersed in a film-forming thermoplastic matrix. The coating composition also includes at least one organic solvent capable of dissolving the dispersion. A method according to the invention includes the steps of preparing a dispersion of an intrinsically conductive polymer in a film-forming thermoplastic matrix. The method also includes the steps of dissolving the dispersion in an organic solvent and forming a film from the dissolved dispersion.

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Akron, OH, United States of America

John C Campbell