Abstract: A system for adjusting pressure locally acting on the skin including a set of adjacent modules distributed so as to form a layer each module includes a cushion capable of changing shape and comprising a cavity, a valve, a tank, and a pressure sensor, wherein the cavity and the tank are in communication with each other by means of the valve, and the sensor is placed so as to sense pressure directly or indirectly acting on the cushion and a feedback loop arranged such as to increase or decrease the change in the shape of the cushion on the basis of the pressure detected by the sensor.

Abstract: The invention relates to a system for adjusting pressure locally acting on the skin. Said system includes a set of adjacent modules distributed so as to form a layer. Each module includes a cushion capable of changing shape and comprising a cavity, a valve, a tank, and a pressure sensor, wherein the cavity and the tank are in communication with each other by means of the valve, and the sensor is placed so as to sense pressure directly or indirectly acting on the cushion. The system also includes a feedback loop arranged such as to increase or decrease the change in the shape of the cushion on the basis of the pressure detected by the sensor. The system according to the invention can be built into a shoe so as to re-establish normal plantar pressure under the entire sole of the foot, which is particularly desirable for athletes or for patients suffering from diabetes mellitus or leprosy.

Abstract: A spherical puzzle toy has a central member with four radial shanks defining respective axes intersecting at a common point representing a center of a spherical surface of the puzzle toy. Mounted on the central member are first and second groups of shaped bodies which collectively form the outer spherical surface of the toy. The first group of bodies is comprised of four identical bodies each having an inner portion respectively secured on the shanks of the central member in radial extension thereof and an outer portion forming a first part of the spherical surface of the puzzle toy. The inner portion has a tapered form with radial surfaces, while the outer portion has a spherical triangular shape. The second group of bodies are slidably supported by the first group of bodies and include inner portions of tapered form with radial surfaces which are slidable on one another and on the radial surfaces of the first group of bodies.

Abstract: A three-dimensional logical toy having regular, irregular or amorphous composite members of various shapes as symbol-bearing components and forming a unit, whereby the shaped members making up the composite body may be allocated to three main groups within which the configurations are identical, and whereby the shaped bodies may be rearranged by rotation along the axis traversing the geometrical central point of the composite body. The composite enclosing body (1) is made up of 18 shaped members (2, 3, 4) falling into three different groups and arranged in three mutually parallel layers, which are delimited by two surfaces, viz. one having the configuration of a regular hexagram and one parallel thereto having the configuration of a regular hexagonal. The body is shaped as a composite, form-locked enclosing body along the surface of hexagram configuration.