Abstract: An electro-optic display device using an electro-optic plate operating in the transverse bias mode selectively transmits light. A first conductor having an aperture is formed on one side of the plate and is overlaid with an insulating layer. A second conductor is formed over the insulating layer and crosses over the first conductor. The second conductor also has apertures generally aligned with the apertures in the first conductor and separated by a portion of the conductor extending to the surface of the electro-optic plate. An arrangement of first and second conductors may be disposed to have the apertures form an addressable dot-matrix display.

Abstract: An improved lightweight, stiff member for use as a speaker diaphram is formed from a porous layer of high stiffness fibers. The fibers are randomly oriented, spaced-apart, and crossover each other at given points to form a porous layer with a given thickness. The fibers are bonded to each other at the given crossover points. A gastight film is also bonded to the layer of fibers thereby providing a gastight member having high flexural stiffness.A method for making a lightweight, stiff member by the application of a dilute solution of an epoxy resin and a solvent to a porous layer of randomly oriented, spaced-apart, high stiffness fibers. The solvent is removed, leaving a thin layer of epoxy resin on the fibers. The porous layer of fibers and a gastight overlying sheet are pneumatically formed into a predetermined configuration.

Abstract: A bimorph bender is comprised of a pair of piezoelectric circular discs having diametrically opposed surface portions. Signal carrying electrodes are formed contiguous with each surface portion. A center vane is sandwiched between the discs maintaining them in a fixed spaced relation. The bender dishes in response to the electrical signals appearing at the electrodes.Mechanical coupling to the bender is provided by a washer which is affixed in the central portion of the bender. The washer is made of a high specific stiffness material for maintaining a high electro-mechanical coupling factor. The resulting structure provides a highly reliable and efficient power transducer.

Abstract: A piezoelectric disc having opposed major surfaces with electrodes affixed thereto bonded in generally parallel overlying relationship to a piezoelectrically inactive acoustic radiation member by means of an elastomeric interlayer, which elastomeric material is characterized by having a shear modulus which varies directly with the frequency of stresses applied to said elastomeric material.

Abstract: A unique printer head employs a plurality of bimorph benders to drive a wire matrix. The benders are of the circular, high power type, having centrally located coupling washers. A housing supports the benders which are stackably mounted therein such that the washer openings form a central cavity which is aligned with an opening in the housing. Each wire couples to a corresponding bender to be ballistically driven thereby. The wires are routed through the central cavity and wire guides for actuation out the housing opening.Because of the high efficiency of the bimorph bender drivers, the improved printer head has reduced size and weight, while maintaining a high reliability.