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    • 4. 发明专利
    • LINEAR EXPANSION COEFFICIENT MEASURING APPARATUS
    • JPH07181153A
    • 1995-07-21
    • JP32816793
    • 1993-12-24
    • MITSUBISHI ELECTRIC CORP
    • TANIZAWA KAZUO
    • G01N25/16
    • PURPOSE:To enable highly accurate measurement utilizing a bimetallic effect by arranging a test piece to be a sandwich plate in which a reference plate with the linear expansion coefficient known and a sample plate comprising a measuring material the same in dimensions as this are stuck together. CONSTITUTION:A reference plate 17 with the linear expansion coefficient known is joined on a sample plate 18 with the linear expansion coefficient unknown the same in dimensions as this with an adhesive to form a test piece A. The reference plate 17 is used in place of the sample plate 18 and hence. a standard piece B is formed. After the setting of the initial state by the adjustment of a weight 7, when temperature in an electric furnace 2 is changed by T, the test piece A is deformed thermally by a bimetallic effect so that a detection bar 5b is moved upward or downward to deviate the positions of a primary differential transformer 8 and an electromagnet 9. The deviation of the transformer 8 and the electromagnet 9 is detected as phase difference between sine wave input and output signals. Thus, the bimetallic effect by a sandwich construction enables expression in expansion of a difference in elongation attributed to a difference in the linear expansion coefficient between the reference plate 17 and the sample plate 18 as bending deformation of the test piece A.
    • 8. 发明专利
    • DEVELOPING TRUSS REFLECTING MIRROR
    • JPH03101303A
    • 1991-04-26
    • JP23767689
    • 1989-09-13
    • MITSUBISHI ELECTRIC CORP
    • TANIZAWA KAZUO
    • H01Q15/14H01Q15/20
    • PURPOSE:To obtain a developing truss reflecting mirror whose reliability in development is high and whose weight is light by making a frame constituting the reflecting mirror exist only in the periphery of the reflecting mirror. CONSTITUTION:At the time of storage, a tetrahedral composed of a first connector 4a and a second connector 4b is flattened out and an angle which a guide rod 6 and a rib 8 makes becomes zero. It is developed by pushing and widening a space between a main slide hinge 7 and a third connector 4c by the spring force of a coil spring 15. When a distance between the main slide hinge 7 and the third connector 4c increased, a distance between the second connector 4b and the first connector 4a is held in a constant length by an oblique member 3, and a distance between the first connector 4a and the main slide hinge 7 is held in the length of a rib 8. Thus, the tetrahedral is widen and an angle thetawhich the rib 8 and the guide rod 6 makes is increased. Thus, the number of hinges is small because tetrahedral structure being unit structure exists only in the peripheral part of the reflecting mirror, and the reliability of development is improved be cause the number of sliding device parts is small in unit structure itself.
    • 9. 发明专利
    • EXPANSION TRUSS STRUCTURE
    • JPH0277398A
    • 1990-03-16
    • JP22897688
    • 1988-09-13
    • MITSUBISHI ELECTRIC CORP
    • TANIZAWA KAZUO
    • E04B1/344B64G1/22E04B1/19H01Q15/20
    • PURPOSE:To improve rigidity and to stabilize the expansion form by disposing a connector supported on a guide rod with a coiled spring in the center of the base of a pyramid formed by a connector and a swash member, connecting same to each apex by ribs and stretching a wire between the respective apexes of the base in the above structure of an expansion antenna or the like. CONSTITUTION:N-pyramid (N is 3, 4, 6), for example, a trigonal pyramid is formed by connectors 3a, 3b with a pin joint and swash members 2. A connector 3c fitted to the forward end of a guide rod 10 having a coiled spring 16 is disposed on the inside of the base triangle of the trigonal pyramid. The connector 3c is disposed in such a manner that the adjacent members are reverse to each other. The respective connectors 3a, 3b, a slide hinge 11 of the guide rod 10 and the connector 3c are connected by ribs 12, 14, and a wire 13 is stretched between the connectors of the base of the trigonal pyramid forming the upper and lower surfaces of the truss structure. By this arrangement, the truss structure which has high rigidity and is self-expanded can be obtained.