PURPOSE:To facilitate manufacture of a sealed lead-acid battery and improve its initial performance and its life time performance by using a separator made by including a non-woven cloth in a porous sheet to which granular silica powder is coupled by means of binder of polyfluoropolymer. CONSTITUTION:Granular silica powder having specific surface area of 150=200m<2>/g forming coarse size secondary...

PURPOSE:To restrain decrease in a quantity of electrolyte, so as to obtain a battery having a long life and prevent extension of a positive plate and curvature of a negative plate. CONSTITUTION:In a clad type sealedlead-acid battery in which gas electrolyte 9 is used each of pole space holding pieces B is interposed between a positive pole A and a negative pole 8, wherein the holding piece B has a...

PURPOSE:To remarkably enhance battery life. CONSTITUTION:A clad-type electrode plate is used as a positive electrode plate, granular silica is filled between the electrode plates and around an electrode plate group. A quantity adequate for electric discharging of a sulfate electrolyte is impregnated and carried in the granular silica, a separator, and a positive and a negative electrode plate so t...

PURPOSE:To provide a sealed lead-acid battery excellent in cycle lifetime characteristic at the time of pattern electric discharging inclusive of high rate electric discharging at a high energy density. CONSTITUTION:1-10wt.% of porous apatite hydroxide, particularly apatite hydroxide, where a part of calcium is substituted with lanthanum or yttrium, is added as an additive into an active material ...

PURPOSE:To improve a utilization factor of a negative electrode active material, obtain a long service life lead-acid battery having high weight efficiency and volume efficiency, improve charge receivable performance of the negative electrode active material, and also improve resistance to sulfation. CONSTITUTION:Electron conductive carbon whiskers or graphite whiskers having a diameter of 0.05-1....

PURPOSE:To improve service life performance significantly. CONSTITUTION:A clad type plate is used as a positive electrode plate, and granule silica is filled and arranged between plates and around a plate group. A necessary and sufficient quantity of sulfuric acid electrolyte for discharge is impregnated in/held with the granule silica, an isolating body and positive and negative electrode plates,...

PURPOSE:To house a electrode plate group easily in a battery jar by using synthetic resin formed by adding a filler of a thermally expansible plastic hollow body as a pressurizing spacer used to pressurize the plate group. CONSTITUTION:A plate formed by adding a thermally expansible filler by 5weight% to a P.P plate is used as a pressurizing spacer. Here, isobutane composed of vinylidene chloride ...

Device (10') for chopping up small sized objects, particularly cigarette butts, comprising: a box (11'); at least one pair of main cutting tools (17',18') and possibly at least one auxiliary cutting tool (19') contained in a chopping section (14'); and an electric motor (20') connected to a reducer (21') which in its turn makes the said cutting tools (17', 18', 19') rotate; a device (10') char...

An apparatus for the high-level clarification of liquids containing suspended solid particles, which comprises a flotation tank (1) that forms a flotation cell (20) or region provided with an inlet (2) for the liquid to be clarified, which is supersaturated with gas, characterized in that it comprises, on at least one portion of the lateral surface that delimits the flotation cell, a filtration el...

L'invention concerne un dispositif pour la coupe transversale d'un matériau alimenté en continu dont le convoyage dans un plan de transport s'effectue par des systèmes entraînés situés au-dessus et au-dessous du plan de transport et les signatures, sectionnées du matériau alimenté en continu, sont déviées par des organes de freinage tournants, s'étendant sur la largeur des signatures et sont ai...

PREPARATION OF POROUS POLYESTER BEADS High molecular weight polyethyleneterephthalate resin is currently being used in vast quantities in manufacturing tire cord and in manufacturing trays for frozen foods which can be heated in either microwave or convection ovens. In some applications polyester resins having ultra-high molecular weights are required. For example, some techniques for producing po...

PURPOSE:To provide an AC superconducting cable unifying the distribution of the current flowing in superconducting strands, capable of stably feeding a large-capacity current, and having high reliability. CONSTITUTION:Multiple superconducting strands 11 each twisted with many superconducting filaments are twisted to form a primary stranded wire 12 of an AC superconducting cable 10. Multiple primar...

PURPOSE:To reduce the AC loss of a superconducting wire by suppressing the electrical connection between filaments having the filament diameter of practical 0.2-0.3mum. CONSTITUTION:A compound superconducting wire is formed with a Nb3Sn compound layer on the boundary face between many Nb or Nb alloy core wires and a Cu-Sn alloy matrix around them. The compound superconducting wire contains 10wt.% ...

PURPOSE:To provide a Nb3Sn superconducting wire rod having little AC loss by burying multiple Nb cores containing a specific quantity of Ta or Ti into a Cu-Sn matrix material containing a specific quantity of Zn or Al, and applying preset machining. CONSTITUTION:A Cu-Sn bronze pipe 1 containing 7wt.% or below in total of at least one of Zn and Al is prepared. A Nb rod 2 containing 5wt.% or below i...

PURPOSE:To mold a superconducting cable having strong rigidity and a shape hardly collapsed against bending or twisting. CONSTITUTION:Multiple lines of grooves 2 are formed on both faces of a belt- like frame 1, and superconducting strands 3 are inserted into the grooves 2. A Kapton tape (couplant tape) 4 is wound on the surface of the frame 1.

PURPOSE:To manufacture an oxide high-temperature superconducting wire having the rigidity suitable for bending in forming a coil. CONSTITUTION:A wire closely stuck with an oxide high-temperature superconductor to a stabilizer 1 made of silver or silver alloy is formed, then a layer 3 made of Cu is formed on the surface of the stabilizer 1. Cu is reacted with the stabilizer 1 by a heat treatment, a...

PURPOSE:To provide a dense oxide superconducting molding excellent in reactivity by dispersing Bi oxide superconductor powder in a solvent, adding a binder and a plasticizer to form high-viscosity slurry, and molding it to release the binder. CONSTITUTION:A toluene/ethanol mixed solution of 10-15 pts. containing a dispersant of 0.02-0.2wt.% is added and kneaded to Bi oxide superconductor (precurso...

PURPOSE:To suppress heat generation when current is applied by decreasing the contact resistance between an oxide high temperature superconducting material and a metal electrode, to obtain an electrode part which is durable for thermal cycling, and to improve the efficiency of an oxide high temperature superconducting current lead. CONSTITUTION:Before formation of an electrode on an oxide high tem...

PURPOSE:To provide a gas cooling type current lead, to be used for a superconducting coil, having the low heat load in cooling system by suppressing the Joule heat generated by the application of a DC current and the heat intruding into the low temperature side from the normal temperature side, and also decreasing the consumption of a liquid refrigerant (liquid helium). CONSTITUTION:An outer cylin...

PURPOSE:To provide means for securely grounding a stator corona shield without installing another means while controlling the increase in tooth eddy-current loss due to a large magnetic flux. CONSTITUTION:A semi-conductive plate tooth parts 32 are installed in at least one part of axial arrangement distributions of a generator of a stator tooth made of a non-metallic material. Also, if necessary, ...