Abstract: An incremented force bearing has a bearing substrate formed of multiple rings made up of an inner ring, an outer ring, an intermediate ring interposed between the inner and outer rings, rotators interposed between respective rings for causing the respective rings to rotate with one another, levers arranged in a row around a center of the upper surface of the bearing substrate, and an annular recess provided around the center of the bearing substrate and recessed in respective rings, the annular recess having wavy slide surfaces as recessed surfaces by which levers are pressed to the inner and outer rings.

Abstract: Since a rotative force applied to an outer ring is outputted to an inner ring as a doubled force, means thereof is mounted on the same axle, thereby simplifying a mechanism for obtaining a doubled or an incremented force. An incremented force bearing comprises a bearing substrate formed of a multiple ring made up of an inner ring, an outer ring, an intermediate ring interposed between the inner and outer rings, rotators interposed between respective rings for causing the respective rings to be rotated with one another, levers arranged in a row around a center of the upper surface of the bearing substrate, and an annular recess provided around the center of the bearing substrate and recessed in respective rings, said annulus recess having wavy slide surfaces as recessed surfaces by which levers are pressed to the inner and outer rings.

Abstract: A piezoelectric polymer material comprising a cured product of a composition comprised of an epoxy resin having at least two epoxy groups in the molecules, a compound having a molecular weight not less than 1200 and containing defined numbers of amino groups, benzene rings, carbonyl groups and methylene groups, and a crosslinking agent. The cured product has dipolarly oriented micro crystals therein. A method for making such a piezoelectric polymer material is also described, in which the resin composition is thermally cured and contacted with an electric field at a high temperature to cause dipolar orientation in the product. The dipoles are frozen by cooling the product while applying the electric field.

Abstract: A piezoelectric pressure-sensitive element comprising a dispersion of a dipolarly oriented ferroelectric ceramic powder in a cured product of a composition comprised of an epoxy resin having at least two epoxy groups in the molecules, a compound having defined numbers of amino groups, benzene rings, carbonyl groups and methylene groups, and a crosslinking agent. A methd for making such a piezoelectric pressure-sensitive element is also described, in which the resin composition comprising a ferroelectric ceramic powder is thermally cured and applied with an electric field at a high temperature to cause dipolar orientation of at least the ceramic powder.

Abstract: A valve molded entirely of resin includes a valve body having an inner housing, a housing cap fitted in the inner housing, a valve element such as a ball, and a stem coupled to the valve element and actuatable to move the latter for providing selective communication between ports in the inner housing and the housing cap. The valve body is covered with a frame molded of resin and substantially covering the exterior surface of the valve body.