Abstract: Disclosed herein is a ceramic composition of high dielectric constant which comprises the major constituents of PbO, La.sub.2 O.sub.3, MO, ZrO.sub.2, and TiO.sub.2 in the ratio defined by the formula below.(1-x-y)PbO.multidot.x/2La.sub.2 O.sub.3 .multidot.yMo.multidot.(1-z)ZrO.sub.2 .multidot.zTiO.sub.2where,M represents Ba and/or Sr;0.06.ltoreq.x.ltoreq.0.300.03.ltoreq.y.ltoreq.0.480.20.ltoreq.z.ltoreq.0.50and an additive represented by PbWo.sub.4 and/or Pb(Mg.sub.1/2 W.sub.1/2)O.sub.3 in an amount of 1-40 wt % (in total) based on the above-mentioned major constituents (provided that the amount of PbWO.sub.4 is less than 15 wt % of the amount of the major constituents and the amount of Pb(Mg.sub.1/2 W.sub.1/2)O.sub.3 is less than 40 wt % of the amount of the major constituents). Less than 5 mol % of all Pb in the composition may be replaced by Ag and/or less than 6 mol % of all Pb in the composition may be replaced by Bi.

Abstract: An anchoring device for prestressed concrete. The anchor is made of an outer member which has an inner hole with a cone shaped surface and an inner member which is made up of a plurality of wedges having at least one hole for holding a tension member. Both the inner member and the outer member are made by alternately superposing cloths of glass fibers and carbon fibers; impregnating the cloths with a resin and curing the resin.

Abstract: A multi-layered ceramic capacitor characterized by a structure containing glass material layers imposed between adjacent ceramic layers and conductive layers which sandwich the glass material therebetween. The conductive electrode layers and/or glass material layers bind the thin ceramic film pieces during firing at lower temperatures resulting in a strong bonded capacitor having numerous electrical applications.

Abstract: A fiber glass is provided for filling in a defect or hollow portion of bone. The fiber glass comprises calcium phosphate as a main ingredient and has a negative zeta potential. The calcium phosphate has a molar ratio of Ca/P of not less than 0.2 and less than 0.6 and the total content of CaO plus P.sub.2 O.sub.5 in the fiber glass is less than 80 wt %. The fiber glass is of long filament form or staple fiber form. The fiber glass of long filament form may be woven to form a woven filler.

Abstract: An electromagnetic actuator comprising a magnetic circuit consisting of a stationary element and a movable element which actuator applies mechanical force to a valve rod, piston, electro-switch or the like and operates in a monostable manner with high sensitivity and at high speed and has a compact, simple and hardy structure.

Abstract: A ceramic composition represented by the following general formula:Pb.sub.1-x La.sub.x (Zr.sub.y Ti.sub.1-y).sub.1-x/4 O.sub.3wherein O<x<1, O<y<1) is produced by a method which comprises adding a mixed solution of a titanium alkoxide and a zirconium alkoxide to an aqueous solution containing lead nitrate and/or lead acetate and lanthanum nitrate and/or lanthanum acetate thereby simultaneously effecting hydrolysis of said alkoxides and coprecipitation of lanthanum components, further adding an alkaline substance to the resultant system thereby effecting substantially thorough precipitation of lead and lanthanum components, and heating the produced precipitate.

Abstract: An electromagnetic actuator according to the present invention comprises(a) a casing mainly consisting of a stationary iron core (1) or a combination of a stationary iron core (1) and a yoke, (1b), the casing being formed with at least one of opening;(b) one or a pair of movable iron core (2) as an actuating member, capable of reciprocally moving through the opening of the casing;(c) an electric winding element (4) arranged in the casing for applying a first magnetomotive force to the movable iron core (2) when an electric current is flowed through the winding element (4);(d) a permanent magnet (5) being so arranged in the casing as to apply the second magnetomotive force to the movable iron core; and(e) a bias force generating means (3) for applying a mechanical force or the first magnetomotive force to the movable iron core (2), wherein the improvement is characterized that a permanent magnet (5) is so arranged in the casing as to apply the second magnetomotive force in parallel to the first magnetomotive f

Abstract: A manufacturing method for ceramic microspheres including the steps of; forming a suspension of ceramic fine powders as a dispersed phase and water as a dispersion medium; dispersing the suspension as droplets in a high boiling point liquid which has substantially the same specific gravity as the suspension and which is immiscible with water and nonreactive with the ceramic fine powder to make spherical particles; and subjecting the resultant product to drying and calcination.

Abstract: A highly dielectric powder the chemical composition of which is represented by the following general formula:(Sr.sub.x Pb.sub.1-x TiO.sub.3).sub.y (PbMg.sub.0.5 W.sub.0.5 O.sub.3).sub.1-y(wherein 0.ltoreq.x<1 and 0<y<1) is produced by a method which comprises adding a mixture consisting of strontium alkoxide (which is not required when the subscript, x, in the aforementioned general formula is 0), lead alkoxide, titanium alkoxide, and magnesium alkoxide to an aqueous solution of ammonium para-tungstate thereby effecting hydrolysis of alkoxides and coprecipitation of a tungsten component and subsequently heating the resultant precipitate.

Abstract: A method of manufacturing a miniaturized multilayer ceramic capacitor having high capacitance which comprises a dielectric body of the type that the grain boundaries thereof are insulated. Multilayer chips are prepared which consist of a semiconductor ceramic material whose major constituent comprises titanate of alkaline-earth metal such as Ba, Sr or the like; and such chips are placed within a container formed of a fired mixture of CuO and Al.sub.2 O.sub.3 and subjected to a heat treatment so that copper ions which serve as insulating agent, are caused to uniformly diffuse from vapor phase in crystal grain boundaries of the semiconductor ceramics body of each of the chips.

Abstract: A fiber glass is provided for filling in a defect or hollow portion of bone. The fiber glass comprises calcium phosphate as a main ingredient and has a negative zeta potential. The calcium phosphate has a molar ratio of Ca/P of not less than 0.2 and less than 0.6 and the total content of CaO plus P.sub.2 O.sub.5 less than 80 wt %. The fiber glass is of long filament form or staple fiber form. The fiber glass of long filament form may be woven to form a woven filler.

Abstract: There is provided a dielectric ceramic composition which comprises (Pb,La)(Zr,Ti)O.sub.3 and Pb(Mg.sub.1/3 Nb.sub.2/3)O.sub.3 in the ratio defined by the formula below.x(Pb.sub.1-u La.sub.u)(Zr.sub.1-v Ti.sub.v)O.sub.3.(1-x)Pb(Mg.sub.1/3 Nb.sub.2/3)O.sub.3wherein0.10.ltoreq.u.ltoreq.0.280.25.ltoreq.v.ltoreq.1.000.03.ltoreq.x.ltoreq.0.

Abstract: Electronic parts comprising ceramic substrate and electrode layer provided onto the substrate in which a micro-granular ceramic powder is dispersed substantially only inside of the electrode layer. A process for the manufacture of the same is also disclosed.

Abstract: In a method of manufacturing silica-free, interconnected porous ceramics, use is made of ceramic material powder which exhibits an expansion phenomenon due to reaction when fired; the ceramic material powder is mixed with binder; the mixture is molded; thereafter the molded mixture is fired and, during the firing process, held for a predetermined period of time at a predetermined temperature which is not lower than a temperature at which maximum expansion occurs in the expansion phenomenon but lower than a temperature at which the firing of the molded mixture is completed; and the firing process is stopped after a lapse of the predetermined period of time.

Abstract: An electromagnetic actuator comprises a stationary element made of soft magnetic material which element has a plurality of magnetic poles, a magnet one magnetic pole of which is secured to the stationary element, a movable element made of soft magnetic material which element is faced with the magnetic poles of the stationary element and the other magnetic pole of the magnet through narrow gaps so as to form a magnetic circuit arranged in parallel to the direction of magnetic flux generated by the magnet, and a coil element wound around the stationary element which coil is so arranged as to energize the magnetic circuit in series. When electric current is flowed through the coil, the balance of magnetic force between these magnetic fluxes loses and therefore, the movable element is reciprocally moved with respect to the stationary element. This device can be actuated with a large moving force generated by a fine current.

Abstract: An efficient apparatus for automatically piling paper bag packages of Portland cement in alignment on a platform of a truck comprises a back and forth traveling supply conveyor and a loading device connected at the delivery end thereof. The loading device has two distributing carriages which respectively can receive each package supplied from the conveyor and carry it transversely to the predetermined position, and also has bottom gates through which each package passes to fall onto the exact aligned position on the platform.

Abstract: There is here disclosed a calcining apparatus for a powdery material comprising a first preheating series composed of a calcining kiln and preheaters at a plurality of stages for heating the powdery material with an exhaust gas from the calcining kiln, a second preheating series composed of other preheaters at a plurality of stages for heating the powdery material with an exhaust gas from a rotary kiln, and a gas carrying pipe for connecting the first and second prehating series in the middle thereof, a flow path for the powdery material being adapted so that the powdery material fed to each series may be led into the rotary kiln via a combining duct disposed in front of the undermost preheaters in both the series and then via the undermost portions of both the series. Further, disclosed is a calcining apparatus for a powdery material in which a sub-calcining kiln and a calcining chamber are disposed on an exhaust gas pipe extending from a rotary kiln.

Abstract: A dielectric powder consisting of a solid solution of compounds selected at least one each from the two group (a) and (b) of compounds indicated below and having a chemical composition represented by the following general formula:[ABO.sub.3 ].sub.1-x [A'(B'.sub.1-y B".sub.Y)O.sub.3 ].sub.x (I)(Wherein x and y satisfy 0<x<1 and 0<y<1 respectively), is produced by mixing metal alkoxides in proportions such that the proportions of the metallic elements thereof conform to the proportions of the metallic elements in the aforementioned general formula (I) and hydrolyzing the metal alkoxides contained in the resultant mixture:(a) Compounds of the ABO.sub.3 type perovskite structure and(b) Compounds of the A'(B'.sub.1/2 B".sub.1/2)O.sub.3, A'(B'.sub.1/3 B".sub.2/3)O.sub.3, or A'(B'.sub.2/3 B".sub.1/3)O.sub.

Abstract: A fiber glass is provided for filling in a defect or hollow portion of bone. The fiber glass comprises calcium phosphate as a main ingredient and has a negative zeta potential. The calcium phosphate has a molar ratio of Ca/P of not less than 0.2 and less than 0.6 and the total content of CaO plus P.sub.2 O.sub.5 in the fiber glass is less than 80 wt %. The fiber glass is of long filament form or staple fiber form. The fiber glass of long filament form may be woven to form a woven filler.

Abstract: A cyclone comprising a cylindrical portion and an inverted conical portion, the cylindrical portion having a gas inlet connected thereto in its tangential direction and a gas outlet perforated through a ceiling panel thereof, the gas inlet allowing the introduction of a gas including powders therethrough, the inverted conical portion being connected to the cylindrical portion under its lower edge and having a collected powder outlet at the lower end thereof, characterized in that the gas outlet is perforated through the ceiling panel of the cylindrical portion so that the central axis of the gas outlet may be coaxially coincident with the central axis of the cylindrical portion; a cylindrical exhaust gas guide is disposed under the ceiling panel so as to surround the periphery of the gas outlet; and when a cross section of the cylindrical portion is separated into four sectors by an imaginary line passing through an intersection of an inner wall of the gas inlet and the cylindrical portion and passing through