Abstract: A method of winding a reinforcement layer of a pneumatic radial tire, which comprises providing at circumferentially spaced locations opposite to a front face of an outer peripheral surface of a building drum, a pair of traverse devices each having a fiber cord feed guide and constructed so as to be reciprocated along the axial direction of the building drum; and moving the pair of traverse devices by independent driving devices along the axial direction of the building drum while rotating the building drum, thereby simultaneously feeding rubberized fiber cords respectively from each feed device to a reinforcement belt on the building drum.

Abstract: A graft copolymer having dispersion stabilizing effect, which comprises on the carbon backbone thereof a polymer side chain comprising a carbon chain having a molecular weight of 1,000.about.100,000, a fluorine atom containing fluorine side chain and a hydrophilic side chain containing a hydrophilic group, the total mean molecular weight of said graft copolymer being 5,000 or more. The graft copolymer of this invention can be used as an excellent dispersion stabilizer for emulsion polymerization, whereby in emulsion polymerization it is possible to attain polymer particle dispersion stability to ensure that the polymer particles will not be agglomerated even if they have been grown to larger particles having a diameter of 0.5.mu. or more and that dispersion of the polymer particles having a large and uniform particle diameter is obtained.

Abstract: A graft copolymer having dispersion stabilizing effect, which is a product of the polymerization of 5 to 30% by weight of a macromonomer which has a molecular weight of 1,000 to 100,000 and has a radical polymerizable unsaturated group at its one end, 1 to 40% by weight of a hydrophillic monomer which has a hydrophillic moiety in it and has a radical polymerizable unsaturated group, and 5 to 40% by weight of a fluorinated monomer which has a florinated moiety in it and has a radical polymerizable unsaturated group, the % by weight being based on a total of the three monomers, and 0 to 50% of the total of the total of the three monomers of a monomer copolymerizable therewith.

Abstract: The present invention provides two branches of a base station transmitter and a base station receiver, respectively, and inserts a delay circuit for ensuring a delay time difference between D and U waves required to obtain the best bit error rate for a DSK system, BPSK-RZ system, QPSK-RZ system or the like, into each system of the transmitter and the receiver, respectively, or into either the transmitter or the receiver of each system, thereby efficiently improving the bit error rate.

Abstract: A digital communication system, in which digital information is represented by a quaternary information symbol (11, 01, 00, 10) and the double step phase shift, each step represented by (.pi./4, 3.pi./4, 5.pi./4, 7.pi./4), is performed per 1/2 time slot in correspondence to each information symbol, so that the number of phase shift per unit time in the case of the identical transmission rate can be decreased to 1/2, as compared with a .DELTA..theta./2-DSK system, and expansion of the bandwidth can be decreased to 1/2.

Abstract: The present invention provides a digital communication system in which one time slot is divided into a first half section and a second half section and the carrier phase difference .theta. between each neighboring first half section is set to either (.pi., 0) with respect to a binary information symbol (1,0) or (0, .pi./2, .pi., 3/2.pi.) with respect to a quaternary information symbol (11, 01, 00, 10). In addition, the phase difference .psi. between the first half and the second half of any time slot is a constant value .psi..sub.0 (for example, .pi.rad) irrespective of the symbol, or .psi..sub.i determined with respect to a symbol (for example, +.pi./2 with respect to a symbol 1 or -.pi./2 with respect to a symbol 0). Therefore, an arbitrary complementary characteristic can be obtained when differentially demodulated in a multipath fading channel, irrespective of the amplitude characteristic of a demodulation signal.

Abstract: A radiator is laterally mounted between a pair of right and left frames arranged parallel to each other. The radiator has an upper tank and a lower tank and is mounted onto the frames by means of pins and brackets, the pins going through orifices in the brackets. No particular fitting work is required. The number of the fastening elements for mounting the radiator is reduced and the assembly may be carried out more easily because the radiator may be mounted from the outside of the frames. Further, there are provided two upper and bottom discontinuous spaces formed by a shroud which surrounds the outside of the radiator, and heat generated when the engine is idle, may be dissipated.

Abstract: The present invention relates to a reserve tank for a radiator to be mounted on a water-cooled, three- or four-wheeled buggy, which can store therein the given maximum amount of cooling water, even when said buggy is upright erected with the front portion of its body upwards, wherein the reserve tank includes a storing body provided in its upper portion with a water supply inlet at a position closer to the front portion of a buggy body, and a capacity for storing at least the given maximum amount of cooling water is assured within the rear portion of said storing body, further, the storing body includes a side wall having a member recessed to receive a seat rail stay, a front wall having an insertion piece to be fixedly inserted on a hook secured to the seat rail stay, and a rear wall having a bracket to be secured to the seat rail stay.

Abstract: A vehicle which may be three-wheeled or four-wheeled, for instance, a buggy comprises a front wheel and a wishbone suspension for supporting the front wheel and a power unit. The body frame comprises a left subframe, a right subframe of essentially quadrilateral configuration, each subframe having an upper side, a front side, a lower side and a rear side. A reinforcing bar connects the front side and the lower side. The subframes form a first loop. The reinforcing bar forms a second loop with the upper side, the rear side, the front side and the lower side. The second loop is within the first loop. The first loop supports the front wheel wishbone suspension and the second loop supports the power unit. The front side has an upper portion and a lower portion and the lower side has a forward portion and a rear portion and the second loop is formed by the upper side, the upper portion of the front side, the rear portion of the lower side and the rear side.

Abstract: The present invention provides a communication system which employs a signal whose carrier phase is shifted by a constant amount .DELTA..theta. per time slot in correspondence to each symbol (1 or 0) transmitted, and the phase shift is performed by .DELTA..theta./2 (or -.DELTA..theta./2) in the first 1/2 time slot and further by .DELTA..theta./2 (or -.DELTA..theta./2) in the second 1/2 time slot thereby to improve the bit error rate in multipath propagation.

Abstract: The method and apparatus of this invention can be used for smoothly giving and receiving orders between clients and cookers in restaurants and shops or the like so that clients can order the goods at their own discretion and calculation and also so that cookers can receive smoothly their orders and supply the made good to clients in turn of the received orders and make automatically calculation of the particulars and the total amount of the goods given by clients.

Abstract: A process for producing aromatic carbamates in high yield is described, which comprises reacting aromatic nitro compounds, organic compounds containing a hydroxy group, and carbon monoxide in the presence of a catalyst comprising: (1) a platinum group metal or its compound, (2) metallic vanadium or its compound, (3) metallic iron or its compound, (4) a halogen atom, and (5) a tertiary amine, wherein the amount of each component used and the composition are adjusted within specific ranges.

Abstract: For joining pieces of rubberized tire cords or like sheet material end to end, a pair of coplanar tables are provided which have edges disposed opposite to each other in exact parallelism. Each table is equipped with a retractable stop for positioning a piece of sheet material thereon with its end projecting a predetermined distance beyond the said table edge, and a clamp for temporarily securing the sheet material in position on the table. As one of the tables is then moved toward the other, the pieces of sheet material have their opposed ends preliminarily joined together. The apparatus further comprises at least one finishing roller supported above the tables for rolling the preliminarily formed joint of the sheet material, which roller is in the form of a coil of wire effective both to smooth and to strengthen the joint.

Abstract: Titanium minerals are concentrated by leaching with an acid leaching agent in the presence of a chelating agent, sulfonate surfactant or polyacrylamide surfactant, wherein the iron components are removed from the minerals.