Abstract: Rollers for high speed printers and paper handling devices are fabricated by reacting polymeric diphenylmethane diisocyanate with a polyester polyol and/or polyester polyamine and an optional extender, together with a metal salt, a catalyst, and one or more other optional additives, including a liquid conductive additive. The resulting rollers provide a hardness as low as 15 A on cube, a resistivity as low as 5E4 ?·cm, a compression set as low as 0.5% at room temperature and as low as 3% at 157° F., and low tackiness as low as 13 g/cm of adhesion force.

Abstract: Semi-conductive silicone compositions and articles of manufacture containing these compositions are formed by combining a silicone precursor composition with an alkali metal salt and polymerizing the silicone precursor composition in the presence of the alkali metal salt to form a polymerized semi-conductive silicone composition. The polymerized silicone composition can be formed into a solid or foam article of manufacture having a volume resistivity of E8 to E12 ohm-cm, such as a roller or an anti-static belt.

Abstract: Rollers for high speed printers and paper handling devices are fabricated by reacting polymeric diphenylmethane diisocyanate with a polyester polyol and/or polyester polyamine and an optional extender, together with a metal salt, a catalyst, and one or more other optional additives, including a liquid conductive additive. The resulting rollers provide a hardness as low as 15A on cube, a resistivity as low as 5E4 ?·cm, a compression set as low as 0.5% at room temperature and as low as 3% at 157° F., and low tackiness as low as 13 g/cm of adhesion force.

Abstract: A skate wheel for an in-line skate includes a skate wheel hub having an inner hub, an outer rim, and, extending therebetween, a plurality of blade-form spokes. A skate tire is mounted upon an outer surface of the outer rim of the skate wheel hub. Opposed surfaces of adjacent blade-form spokes, in cooperation with opposed surfaces of the inner hub and the outer rim, define airflow passageways through the skate wheel. Each blade-form spoke includes a radially-aligned first spoke-edge surface exposed at a skate wheel face, a radially aligned opposite, second spoke-edge surface exposed in a region of a center plane defined by the skate wheel, and a body extending smoothly between the first and second spoke-edge surfaces. Also described are in-line skates with skate wheels of the disclosure, and skate wheel hubs for such skates.

Abstract: A skate wheel for an in-line skate has a skate wheel hub with an inner hub, an outer rim, and a plurality of blade-form spokes extending therebetween, and a skate tire mounted upon an outer surface of the skate wheel hub. Opposed surfaces of adjacent spokes, in cooperation with opposed surfaces of the inner hub and outer rim, define airflow passageways through the skate wheel. Each blade-form spoke has a radially-aligned first spoke-edge surface exposed at a first face of the skate wheel, a radially aligned opposite, second spoke-edge surface exposed at an opposite, second face of the skate wheel, and a blade-form body extending smoothly therebetween. The first and second spoke-edge surfaces are offset in a direction of travel of the skater by a predetermined arc of rotation of the skate wheel and hub. Also described are in-line skates with skate wheels of the disclosure, and skate wheel hubs for such skates.

Abstract: A method of personal locomotion including stepping onto first and second wheeled shoe accessories and engaging the first wheeled shoe accessory against a support surface to roll on the second wheeled shoe accessory in a desired direction at an angle to a normal walking direction. The wheeled shoe accessory includes a rigid board having a length sufficient to span a width of a shoe placed sideways across the board, with the board supporting at least an arch region of the shoe. At least one axle assembly is secured to a lower surface of the board. The user experience is similar to that of a skateboard, but with decoupled feet for individual maneuverability of each wheeled shoe accessory.

Abstract: Shoes with various configurations of rollers secured to one region of their soles for rolling, while leaving another sole region exposed for walking. The rollers are mounted to rotate about an axle defining a primary axis of rotation extending at an angle of between about zero and 45 degrees to the walking direction, as viewed from above the shoe, for rolling sideways along a support surface. This provides a combined running-rolling method of locomotion, by running on the exposed sole surfaces, and then jumping into a “surfing” stance for rolling. In some cases, the rollers are mounted on steerable truck assemblies. One particularly small truck assembly includes wedge-shaped bushings for steering compliance.

Abstract: A conductive roller for use in a laser printer includes a solid, thermoset urethane comprising a metal salt and having a hardness of between 30 Shore A and 50 Shore A on cube and a volume resistivity of 1E6 ohm-cm and 9E8 ohm-cm.

Abstract: Shoes with various configurations of rollers secured to one region of their soles for rolling, while leaving another sole region exposed for walking. The rollers are mounted to rotate about an axle defining a primary axis of rotation extending at an angle of between about zero and 45 degrees to the walking direction, as viewed from above the shoe, for rolling sideways along a support surface. This provides a combined running-rolling method of locomotion, by running on the exposed sole surfaces, and then jumping into a “surfing” stance for rolling. In some cases, the rollers are mounted on steerable truck assemblies. One particularly small truck assembly includes wedge-shaped bushings for steering compliance.

Abstract: The invention relates to a low tacky, conductive, soft urethane roller for use in a printer. The roller includes a metal salt evenly or homogeneously distributed in a copolymer formed of a diisocyanate, a reactive silicone containing an amine group; and a polyol or a polyamine. The roller can also have a volume resistivity of between about 1E5 ohm-cm and about 5E10 ohm-cm, and includes a metal salt solution in a copolymer formed of a diisocyanate, a reactive silicone containing a hydroxyl group and/or an amine group; and a polyol and/or a polyamine.

Abstract: A conductive roller for use in a laser printer includes a solid, thermoset urethane comprising a metal salt and having a hardness of between 30 Shore A and 50 Shore A on cube and a volume resistivity of 1E6 ohm-cm and 9E8 ohm-cm.

Abstract: A conductive quasi-solution useful for making a homogeneously conductive single-phase polyurethane, comprising a transition metal salt, a carrier solution, and a dispersing agent, wherein said conductive quasi-solution has a transition metal salt concentration between 10 and 30% by weight, and methods of making thermoset and thermoplastic polyurethane polymers therewith.

Abstract: An electrically conductive or semi-conductive polymeric material including a metal salt dissolved in a polymer. The metal salt is complexed with the polymer, which is what provides the material with its conductive properties. The materials have a resistivity of between 105 and 1012 ohms-cm.

Abstract: A roller includes a metal core, a cylinder including polyurethane, and a conductive adhesive between the metal core and the cylinder. The polyurethane includes a solid solution of a transition metal halide salt and includes less than 5% of salt by weight. The transition metal halide salt provides the polyurethane with a uniform conductivity and a uniform resistivity of between 1012 ohm-cm and 105 ohms-cms.

Abstract: A conductive roller for use in a laser printer includes a solid, thermoset urethane comprising a metal salt and having a hardness of between 30 Shore A and 50 Shore A on cube and a volume resistivity of 1E6 ohm-cm and 9E8 ohm-cm.

Abstract: Disclosed is an in-line skate wheel that includes: (a) a braking portion including a high friction surface material having a hardness from about 75 to about 95 Shore A, and a coefficient of friction from about 0.45 to about 1.5; and (b) a skating portion including a low friction surface material having a hardness from about 75 to about 95 Shore A, and a coefficient of friction from about 0.1 to about 0.45. The skating portion includes a higher proportion of low friction surface material than the braking portion. The wheel delivers variable traction in response to the angle of wheel contact with the ground, without sacrificing a smooth ride or wheel durability. Utilizing the variable traction of the wheel a skater can stop safely and reliably, using known ice-skating maneuvers, wherein the wheel is turned away from the skater's direction of travel.

Abstract: A conductive quasi-solution useful for making a homogeneously conductive single-phase polyurethane, comprising a transition metal salt, a carrier solution, and a dispersing agent, wherein said conductive quasi-solution has a transition metal salt concentration between 10 and 30% by weight, and methods of making thermoset and thermoplastic polyurethane polymers therewith.

Abstract: A conductive quasi-solution useful for making a homogeneously conductive single-phase polyurethane, comprising a transition metal salt, a carrier solution, and a dispersing agent, wherein said conductive quasi-solution has a transition metal salt concentration between 10 and 30% by weight, and methods of making thermoset and thermoplastic polyurethane polymers therewith.

Abstract: An in-line wheeled skate which includes one or more rollers located between the wheels and above the ground plane, thereby enabling the skater to jump up on a rail (or other supporting surface) and roll down the rail sideways, as in `extreme skating` maneuvers, by placing the skate on the rail with the rollers bearing upon the rail surface. The rollers may be, for example, cylindrical or spherical, and are preferably located between left and right side planes of the skate wheels.

Abstract: An in-line wheeled skate which includes a rolling element between the wheels that enables the skater to jump up on a rail and roll down the rail sideways, as in `extreme skating` maneuvers, by placing the skate on the rail with the rolling element bearing upon the rail surface. Adjustable brakes provide control of the speed of sideways motion. The rolling element is provided as part of an attachment or lower structure to be secured to an in-line skate.