Abstract: A method for manufacturing a winding for an electric rotating machine includes steps of altering, passing, shaping, and connecting. In the altering step, connecting portions of conductor segments, a part of which is exposed, are altered in shape by a pressing die to provide good contact between the segments when they are connected. The altered segments are passing through slots of a stator core in the passing step. Ends of protruded portions of the segments are shaped so that they make an angle with respect to the radial section of the stator core in the shaping step. Adjacent segments are connected together at ends of the connecting portion in the connecting step.

Abstract: A method of manufacturing a winding of a rotary electric machine includes steps of pressing a portion of a conductor segment in a predetermined direction to reduce its dimension in the direction, inserting the conductor segment into a slot of a stator core, bending the conductor segments and joining ends of the conductor segments. In the pressing step, the conductor segment is pressed with a punch in a condition that it is held in a die that has curved inside corner portions to restrict deformation of corners of the pressed portion.

Abstract: A stator of a rotary electric machine such as an alternator for use in an automobile vehicle is composed of a cylindrical stator core and a stator winding held in the stator core. The stator winding is formed by electrically connecting plural U-shaped conductor segments inserted into slots of the stator core. Pairs of segment ends to be electrically connected are aligned along two or more coaxial circumferences and correctly positioned by individually restricting each pair of segment ends. Correctly positioned plural pairs are continuously welded one by one by rotating the stator core.

Abstract: A rotary electric machine stator includes a stator core having plural slots and a stator winding that is composed of plural conductor segments. Each conductor segment has a straight portion disposed in the slot and connection ends projecting from the slots and welded to another. The connection ends to be welded cross each other at an angle larger than zero degree.

Abstract: The invention provides an aqueous dispersion which includes i) an aqueous dispersion (I) resulting from dispersion of a block copolymer (I) composed of at least one polymer block (A) containing olefin monomer units and at least one polymer block (B) containing 2 to 100 mole percent of units derived from at least one vinyl monomer having a carboxyl or carboxylic anhydride group and 98 to 0 (zero) mole percent of units derived from another vinyl monomer or monomers copolymerizable with the carboxyl group- or carboxylic anhydride group-containing vinyl monomer, in an aqueous solution of not less than 0.05 equivalent, relative to the carboxyl or carboxylic anhydride group, of a basic substance, and ii) a polyurethane (II), iii) vinyl polymer (III) or iv) tackifier (IV) incorporated in the aqueous dispersion (I).

Abstract: To secure insulation between electrical conductors at a coil end, a first electrical conductor at one coil end is arranged so as to intersect a radially adjacent second electrical conductor at one point or more. The electrical conductor is formed with radial indentations in side faces that are opposite side faces in opposing electrical conductors at any of the intersecting portions, the indentations having depths that increase toward the near end of the electrical conductors. Sufficient clearances are thereby secured between electrical conductors in their intersecting portions near their ends where the insulating films are susceptible to damage because of welding heat. Electrical insulation is thus ensured, and the cooling efficiency at the coil end is improved.

Abstract: A conductor segment constituting a stator coil has a head conductor portion protruding from slots of a stator core for constituting a head side coil end. The head conductor portion of the conductor segment consists of a V-angled portion and straight portions extending straight in the axial direction from both ends of the V-angled portion, so as to form, as a whole, a pentagonal shape.

Abstract: A winding on a stator of a rotary electric machine is constructed by welding end portions of a plurality of segments. A plurality of pairs arranged on an end of the stator are welded by a welder. In a welding stage, the pairs are held by a plurality of insertion rods of a circumferential side holding tool. The insertion rods are radially disposed. The insertion rods are movable in a radial direction. The insertion rods are moved back toward a radial outside to release a holding of the pairs after ball-shaped welding marks are formed. Holding is released without damage on the welding mark.

Abstract: An aqueous resin composition satisfying the following criteria (I)-(III). (I) The aqueous resin composition contains (a) an aqueous dispersion of a polyurethane resin obtained from a macromolecular polyol, organic polyisocyanate, chain extending agent and 2,2-dimethylolbutanoic acid, and, if required, (b) an aqueous dispersion of an acrylic resin. (II) When the resin comprising this aqueous resin composition contains mainly a polyurethane resin, the inherent viscosity (&eegr;inh) of the polyurethane resin measured at a concentration of 0.5 g/dL in dimethylformamide solution is in the range of 0.2-0.7 dL/g. After this aqueous resin composition is dried, the elastic modulus at 25° C. of the film obtained by heat treatment at 80° C. for 8 hours is in the range of 8.0×106−5.0×108 Pa, and the elastic modulus at 80° C. 8.0×107 Pa or less.

Abstract: A winding on a stator of a rotary electric machine is constructed by welding end portions of a plurality of segments. A plurality of pairs arranged on an end of the stator are welded by a welder. In a welding stage, the pairs are held by a plurality of insertion rods of a circumferential side holding tool. The insertion rods are radially disposed. The insertion rods are movable in a radial direction. The insertion rods are moved back toward a radial outside to release a holding of the pairs after ball-shaped welding marks are formed. Holding is released without damage on the welding mark.

Abstract: A leather-like sheet is prepared by impregnating a fibrous substrate, which may comprise a microfine fiber-forming fiber, with a thermally gellable composite resin emulsion obtained by emulsion-polymerizing an ethylenically unsaturated monomer (B) in the presence of a polyurethane emulsion (A) at a weight ratio of 90/10 to 10/90, solidifying the thermally gellable composite emulsion in the impregnated fibrous substrate, and if the fibrous substrate is a microfine fiber-forming fiber, converting the microfine fiber-forming fiber to a microfine fiber. After impregnation, the emulsion in the impregnated fibrous substrate is thermally solidified, thereby producing a leather-like sheet having excellent softness and fulfillment feeling, and good hand feel, feel and physical properties like that of natural leather. A film of the composite resin has a specific elastic modulus.

Abstract: A method of welding a plurality of connection ends of a plurality of copper segments forming a circumferentially disposed stator winding of a rotary electric machine. The method includes a step of inserting a protection member between connection ends of adjacent two of the plurality of copper segments, a step of activating a welder tool, and a step of circumferentially moving the welder tool relative to the connection ends.

Abstract: The invention provides an aqueous dispersion which includes i) an aqueous dispersion (I) resulting from dispersion of a block copolymer (I) composed of at least one polymer block (A) containing olefin monomer units and at least one polymer block (B) containing 2 to 100 mole percent of units derived from at least one vinyl monomer having a carboxyl or carboxylic anhydride group and 98 to 0 (zero) mole percent of units derived from another vinyl monomer or monomers copolymerizable with the carboxyl group- or carboxylic anhydride group-containing vinyl monomer, in an aqueous solution of not less than 0.05 equivalent, relative to the carboxyl or carboxylic anhydride group, of a basic substance, and ii) a polyurethane (II), iii) vinyl polymer (III) or iv) tackifier (IV) incorporated in the aqueous dispersion (I).

Abstract: In a process for making a leather-like sheet by impregnating a fibrous substrate with a polyurethane emulsion, heat gellable polyurethane emulsion having a specific modulus of elasticity is employed as the polyurethane emulsion, and either of following methods (1) and (2) is also employed: (1) before impregnation of the polyurethane emulsion, the fibrous substrates are pretreated with a surfactant having a function of inhibiting adhesion between fibers and polyurethane (2) in addition to the above modulus of elasticity, the polyurethane emulsion has a specific &agr; dispersion temperature, the fibrous substrates are composed of microfine fiber-forming fibers, and after coagulation of polyurethane emulsion, the fibers are converted to microfine fibers. The leather-like sheets obtained according to this invention exhibits natural leather-like softness and hand touchness as well as excellent physical properties such as bending fatigue resistance.

Abstract: In an insulation structure of a rotary electric machine, a stator winding has connection portions covered with reliable insulation resin coating. The modulus of elasticity of the insulation resin is less than a value which may not cause the insulation resin coating to peel off. The modulus of elasticity changes with the thickness of the insulation resin coating.

Abstract: Provided is a method for producing a polyurethane (PU) emulsion having good solvent resistance and water resistance and having good compatibility with other aqueous emulsions to give stable mixtures with them. The method comprises reacting (A) a PU prepolymer having an isocyanate group in the molecule, (B) a modified PVA having at least one member selected from the group consisting of an amino group, a primary hydroxyl group and an acetoacetyl group and (C) a low-molecular compound having an amino group and/or a hydroxyl group, in an aqueous medium.

Abstract: The disclosure describes a resin and rubber composition with good heat-shrinkability characteristics. Also described is a resin and/or rubber composition having dispersed therein a metal compound used for heating the composition.

Abstract: A pair of torquer magnets each comprising a cup-shaped yoke is provided with a disk-like permanent magnet and a pole piece. A through-hole provided through the center of the torquer magnet and a spool member made of a magnetic compensating metal is inserted into and fixed in the through-hole. The spool is shaped to have a central portion intermediate its end of a substantially smaller diameter.

Abstract: An emergency lock safety belt retractor is designed to facilitate release from an inadvertent lock-up which may occur after full-speed retraction of the seat belt. This undesired lock-up is due to a latch mechanism which locks a belt spool in response to either excessively abrupt onset of extraction, such as may occur in front-end automotive accidents, or excessively abrupt cessation of retraction. This latch mechanism has two separate latches: a simple latch pawl biased away from its latched position and a more complicated lock wheel. The latch pawl is mounted on a rotary drum and in its latched position engages teeth on a stationary drum. The lock wheel is coupled for rotation with the belt spool but is free to move axially through three regimes. The lock wheel is biased toward a first axial regime in which it couples the rotary drum to the belt spool.

Abstract: An improved safety-belt retractor to be applied to an automotive vehicle or other vehicles for protecting a wearer from danger caused when the vehicle is suddenly or rapidly decelerated. The disclosed safety-belt retractor comprises a frame, a belt reel rotatably disposed within the frame and a safety-belt wound thereon to allow extraction and retraction of a safety-belt, a ratchet wheel with a plurality of ratchet teeth on the periphery thereof being secured on the belt reel, a locking member movably disposed within the frame opposing to the ratchet wheel and being engageable with the teeth of the ratchet wheel, and an inertia sensing means, including a means for operating the locking member, for interengagement of the locking member and the ratchet wheel so as to lock the extraction, when the vehicle is suddenly or rapidly decelerated.