Abstract: An electrical device capable of indicating the force and/or location of an impact or other applied force, such as a weight, comprises three or more layers including a continuously-conductive electrode layer, a selectively-conductive electrode layer, and a pressure-sensitive impedance layer between the two electrode layers and forming electrode impedances between them, such that when the force is applied, the electrical impedances are changed in value to provide an indication of the magnitude and/or location of the force.

Abstract: A puzzle-type game comprises at least five manipulatable members, for example of square or circular cross-section, each formed at one end with fingers, and at the opposite end with a circular recess, such that a plurality of the members may be assembled by the player according to any desired sequence, and to be rotated to any desired angular position with respect to each other. Each member carries on its outer faces indicia representing one element of a valid multi-element relationship produced only when the indicia of all the members are aligned according to a predetermined sequence and a predetermined angular position. In one described example, the indicia represent arithmetical equations, and in other described examples they represent the letters of the alphabet, and a maze.

Abstract: A surface-area-pressure transducer comprises: at least one pair of electrode layers each including a plurality of electrically-conductive elements, the elements of one layer extending in spaced, crossing relationship to the elements of the other layer; and a compressively-deformable dielectric layer composed of fibers interposed between the two electrode layers to define therewith an array of capacitors whose capacitances are changed by the compression of said dielectric layer when subjected to pressure. Also described is a line-selector circuit for individually selecting each capacitor for measurement without electrical cross-talk from the other capacitors.