Rca Inc.

Battelle Memorial Institute

Battelle Development Corporation

Joseph R Preston

Louis J Hillenbrand

David A Berry

Vincent Daniel McGinniss

James C Kennedy

Jay R Sayre

Kary L Valentine

Chuck A Plaxico

Carl J Serman

Charles R Miele

W Scott Versluis

James C Kennedy, Jr

Glenn R Schaer

An impact attenuator system includes a hyperelastic member that comprises an energy-absorbing material which behaves in a rate-independent hyperelastic manner so that its permanent set is minimized and the material can absorb tremendous amounts of impact energy while remaining fully recoverable.

Impact attenuator system

An impact attenuator system includes a hyperelastic member that comprises an energy absorbing material which behaves in a rate-independent hyperelastic manner so that its permanent set is minimized and the material can absorb tremendous amounts of impact energy while remaining fully recoverable.

Disclosed are new piezoelectric/pyroelectric materials of polarized homopolymer and copolymers of trifluorovinyl acetate. Also disclosed is a unique predictive relationship for determining the piezoelectricity of unknown material.

Piezoelectric and pyroelectric polymers

A die used for plastic injection molding is masked on its inner surface with a plating resist to leave only a selected area exposed. A conforming anode is fit into the die leaving a small clearance between the die cavity surface and the anode. A metal layer is electroplated onto the exposed mold surfaces of the die in less than a minute by using a high current density and a turbulent flow of electroplating solution. The die is then assembled with a second die to form a mold. A plastic molding composition is injected into the mold cavity and comes in contact with and adheres to the metal electroplate more tightly than the metal electroplate adheres to the surface of the mold member. As the mold is separated, the metal electroplate remains bonded to the plastic molding composition to form a metal-clad plastic article. Adhesion between the metal electroplate and the plastic can be improved by forming nodular growths on the metal electroplate. This is done by varying the current density and/or the electroplating solution flow-rate near the end of the electroplating process. The electroplating and molding steps may be sequentially combined into an automated process for the continuous production of metal-clad articles.

Method for high-speed production of metal-clad articles

A novel in-mold electrodeposition process is disclosed for the production of plastic parts having conductive polymeric coatings such as polypyrroles or polythiophenes. Parts produced according to the novel disclosed in-mold electrodeposition process would have wide applicability including static free plastic parts shielding devices and circuits. The disclosed process advances the art by enabling the utilization of conductive polymers many of which were heretofore considered too brittle for commercial adaptation.

Static free molded plastic parts

High density information discs comprising a conductive carbon-loaded polyvinylchloride disc lubricated with a fractionated methyl alkyl siloxane lubricant which contains a tetrakis(dialkylamino)silane additive.

High density information disc

High density information discs comprising a conductive carbon-loaded polyvinylchloride disc lubricated with a fractionated methyl alkyl siloxane lubricant which contains a hexaalkyldisilazane additive.

High density information discs comprising a conductive carbon loaded polyvinylchloride disc is lubricated with a fractionated methyl alkyl siloxane lubricant which contains an alkyl-substituted-(trialkoxysilyl)alkyl quaternary ammonium salt additive.

High density information disc lubricants

High density information discs comprising a conductive carbon loaded polyvinylchloride disc is lubricated with a fractionated methyl alkyl siloxane lubricant which contains a quinuclidene additive.

High density information discs comprising a conductive carbon loaded polyvinylchloride disc is lubricated with a fractionated methyl alkyl siloxane lubricant which contains an amino alkoxy silane.

Growing community of inventors

Radnor, OH, United States of America

Joseph R Preston