Abstract: A motor according to an embodiment includes a stator. The stator includes a plurality of connection cores. The connection core includes a plurality of pieces connected via connection portions. The plurality of pieces are arranged in a circular arc shape. The plurality of connection cores are arranged in an annular shape.

Abstract: The present invention relates to an electric detonator containing no primary charge or igniting charge, having a simple structure, and capable of directly igniting a base charge of secondary explosive. A detonator of the present invention includes a cylindrical tube closed at one end, a base charge contained in the tube near the closed end thereof, and an ignition device inserted from an open end of the tube and accommodated near the open end. The ignition device is a semiconductor bridge device including a laminate layer and electrode pads. The laminate layer includes layers of a reactive metal and a reactive insulator. The base charge is, for example, pentaerythritol tetranitrate.

Abstract: A method for manufacturing a piezoelectric film type actuator, which is provided with a piezoelectric film and an oscillating plate structural member bonded therefor, comprises the steps of forming a piezoelectric film on an intermediate transfer member; bonding the piezoelectric film on the intermediate member and the oscillating plate structural member; and peeling off the intermediate transfer member from the piezoelectric film. Through the steps thus arranged, it becomes possible to enhance the bonding strength and durability of the piezoelectric film and the oscillating plate structural member without using a bonding agent in the manufacture of a highly reliable piezoelectric film type actuator.

Abstract: An electromagnetic-wave absorber comprising a base material and an electromagnetic-wave absorption layer provided on the base material. The electromagnetic-wave absorption layer contains at least i) a polymeric material having a glass transition temperature (Tg) of from −15° C. to 110° C. and a number-average molecular weight (Mn) of from 3,000 to 1,000,000 and ii) an inorganic material. Also provided is a process for producing the absorber.

Abstract: An electromagnetic-wave absorber comprising a base material and an electromagnetic-wave absorption layer provided on the base material. The electromagnetic-wave absorption layer contains at least i) a polymeric material having a glass transition temperature (Tg) of from −15° C. to 110° C. and a number-average molecular weight (Mn) of from 3,000 to 1,000,000 and ii) an inorganic material. Also provided is a process for producing the absorber.

Abstract: The present invention discloses an oxide ceramic fiber/oxide ceramic composite material comprising primary composite materials each consisting of (a) an assembly of ceramic fibers composed mainly of a metal oxide and (b) a metal oxide ceramic which includes the ceramic fiber assembly (a) therein, the metal oxide of the ceramic (b) being different from the main component metal oxide of the ceramic fiber assembly (a) and the amount of the metal oxide ceramic (b) being 1 to 85% by weight relative to the weight of the ceramic fiber assembly (a), and a metal oxide ceramic which is a matrix for the primary composite materials and which includes the primary composite materials therein, the metal oxide of the ceramic being the same as or different from the main component metal oxide of the ceramic fiber assembly (a); and a process for producing thereof.

Abstract: A method for manufacturing a piezoelectric film type actuator, which is provided with a piezoelectric film and an oscillating plate structural member bonded therefor, comprises the steps of forming a piezoelectric film on an intermediate transfer member; bonding the piezoelectric film on the intermediate member and the oscillating plate structural member; and peeling off the intermediate transfer member from the piezoelectric film. Through the steps thus arranged, it becomes possible to enhance the bonding strength and durability of the piezoelectric film and the oscillating plate structural member without using bonding agent in the manufacture of a highly reliable piezoelectric film type actuator.

Abstract: The present invention discloses:

Abstract: An electromagnetic-wave absorber comprising a base material and an electromagnetic-wave absorption layer provided on the base material. The electromagnetic-wave absorption layer contains at least i) a polymeric material having a glass transition temperature (Tg) of from −15° C. to 110° C. and a number-average molecular weight (Mn) of from 3,000 to 1,000,000 and ii) an inorganic material. Also provided is a process for producing the absorber.

Abstract: A speaker system has a first baffle (2) supporting a first speaker unit for producing sounds in a first frequency range (low frequencies), at least one second baffle (27L), (27R) supporting a second speaker unit for producing sounds in a second frequency range which is higher than the first frequency range (middle and/or high frequencies), the second baffles (27L), (27R) being smaller than the first baffles (2). The second baffle (27L), (27R) are spaced a predetermined distance from the first baffle (2). The speaker system has a reduced baffle effect, and increases direct sounds radiated directly from the speaker units, as compared with indirect sounds radiated backwards from a baffle, thereby improving frequency characteristics in the middle frequencies and providing excellent sound image localization.