Abstract: A styrene resin composition which is admixed with a styrene-vinyl acetate block copolymer is improved in the fluidity without degrading the mechanical strength and electric insulation resistance. Said vinyl acetate block polymer can easily be obtained by using a polymeric peroxide having ester bonds in the molecule thereof, notwithstanding that a copolymer of a styrene and a vinyl acetate could not be prepared easily by the prior art.

Abstract: A mechanism for locking together two mold sections includes one or more lock elements rotatably mounted on one of the mold sections, and a respective cylindrical tie rod for each lock element mounted on the other mold section. Each lock element has a cylindrical opening therethrough along its axis of rotation, and a plurality of lock balls disposed in recesses in the surface of the opening so as to form radially inwardly extending hemispherical projections on said surface. Each tie rod is of a diameter slightly less than that of the corresponding cylindrical opening in the lock element, such that the tie rod is axially slidably receivable within the opening. The surface of each tie rod has a plurality of longitudinal guide grooves radially aligned with the lock balls in the surface of the opening, and each lock ball is slidingly received in a guide groove when the tire rod is slidably disposed in the opening. Intersecting each guide groove at substantially a right angle is a lock groove.

Abstract: A photo-sensitive and heat-sensitive composition consisting essentially of (a) a photooxidant, (b) a color-generator generating color when oxidized, (c) an acid promoting said color generation, (d) a cobalt (III) ammine and/or amine complex, (e) a photoreductant, (f) a hydrogen donator, (g) at least one kind of chelating agent selected from dioxime chelating agents having the general formula (I): ##STR1## (wherein n is an integer of 0 to 3, and R.sub.1 and R.sub.2 can each represent an alkyl, aryl or aralkyl group) and diantipyrylmethane chelating agents having the general formula (II): ##STR2## (wherein R.sub.3, R.sub.4, R.sub.5, R.sub.3 ', R.sub.4 ' and R.sub.5 ' can each represent a hydrogen atom and an alkyl or aryl group, and R.sub.6 and R.sub.7 can each represent a hydrogen atom and an alkyl, substituted or nonsubstituted aryl or aralkyl group), and (h) at least one kind of stabilizer selected from noble metal complexes, organic oxidants and organic acids, and a recording element using the same.

Abstract: A rotary engine wherein a piston is moving within the inside of a cylindrical housing describing its geometrical center or shaft a hypocycloid while the remaining points are generated by a circumference gyrating in the inside of a hypocycloid. The piston is formed by a cylindrical drum with projecting radial vanes. The drum is supported by a crank mechanism which includes a first crank rotatable about the crankshaft and a second crank eccentrically rotatably supported on the first crank. The drum is rotatably supported on the second crank, and a pinion associated with the second crank meshingly reacts with a stationary crown gear, whereby the drum moves along said hypocycloidal path.

Abstract: An imprinter having a single driving device for controlling both the movement of the heated printing head and the intermittent advancing movement of the pigmented ribbon. The single driving device, which preferably comprises a reciprocal fluid pressure cylinder, causes the advancing and retracting movement of the printing head. A motion-transfer mechanism drivingly joins the printing head to the take-up reel for the pigmented ribbon. This mechanism is of the one-way type so as to effect rotation of the take-up reel, and advancement of the pigmented ribbon, only when the printing head is being retracted. This mechanism also employs a lost-motion connection therein so that the rotation of the take-up reel is delayed relative to the initial retraction of the printing head, whereby the printing head is initially moved out of engagement with the ribbon prior to the intermittent advancing thereof.

Abstract: The present invention provides electrophotographic sensitive materials having a high sensitivity as well as a high flexibility which comprise a conductive support and a photosensitive layer formed thereon, said photosensitive layer containing one disazo pigment, as an effective ingredient, which is selected from the group consisting of disazo pigments expressed by the following general formulas I, II, III, and IV, ##STR1## [(wherein A is selected from the group consisting of ##STR2## is selected from the group consisting of aromatic rings such as benzene ring, naphthalene ring, etc., hetero rings such as indole ring, carbazole ring, benzofuran ring, etc. and their substituents, Ar.sub.1 is selected from the group consisting of aromatic rings such as benzene ring, naphthalene ring, etc., hetero rings such as dibenzofuran, etc. and their substituents, Ar.sub.2 and Ar.sub.3 are selected from the group consisting of aromatic rings such as benzene ring, naphthalene ring, etc. and their substituents, R.sub.1 and R.

Abstract: An electrophotographic element utilizing as a charge generation material a disazo pigment having the following general formula: ##STR1## where R.sup.1 is hydrogen, chlorine, bromine, methyl, ethyl, methoxy, ethoxy, nitro, dimethylamino, diethylamino or phenyl; m and n are each an integer such as 1 or 2; and R.sup.2 is hydrogen or chlorine.

Abstract: A polyester resin composition is produced by a reaction of:(A) a dicarboxylic acid and(B) a polyol comprising an etherified diphenol of the formula [I]: ##STR1## in which R is an alkylene having from 2 to 3 carbon atoms; and x and y are each a positive integer with the proviso that the average sum of both is from 2 to 7, and (C) from about 0.05 to about 10 mol %, based on the polyol(B), of a compound having one or two phenolic hydroxy radicals and either (i) an alcoholic hydroxy radical or (ii) a carboxyl radical. The polyester is prevented from caking and blocking.

Abstract: An elastic rail fastening device for securing a rail to a concrete tie having a spike secured therein. A top pressing spring engages the top surface of the rail flange for holding the rail against the tie. One end of the spring is supported beneath a shoulder on the metal spike. A spring receiver is fitted to the tie, and the other end of the top spring bears thereagainst. A side spring is inserted between the side of the rail flange and the spring receiver to receive transverse pressure working on the rail.

Abstract: A braking blade for a ski brake adapted particularly for skiing in deep snow, which blade is arranged at the end of a braking arm of a ski brake, which braking arm consists preferably of a spring wire, and is held secured against a loss, wherein the blade, viewed in the width dimension, is divided by the braking arm into a smaller braking surface which is adjacent the ski and into a larger braking surface which is remote from the ski, which braking surfaces have, in the retracted position of the ski brake, a position which is approximately parallel with respect to the longitudinal axis of the ski and in the braking position of the ski brake are arranged substantially perpendicularly with respect to the longitudinal axis of the ski.

Abstract: A structure for securing one end of a safety strap to a ski or a component fixedly mounted on the ski. The other end of the safety strap is presumed to be secured to the skier by any conventional means. The structure by which the safety strap is secured to the ski structure enables the strap to hold the ski to the skier should the ski become disconnected from the skier while travelling on a chairlift or at slow speeds. However, this same structure will facilitate a release of the strap from engagement with the ski structure should the ski be pulled away from the skier with a sufficient magnitude of force, such as will occur during falls at high speeds. The thereafter released ski will be stopped by, for example, a ski brake mechanism mounted on the ski.

Abstract: A multi-color thermo-sensitive recording material comprises two thermo-sensitive coloring layers capable of forming different colors respectively at different temperatures, which are formed one over the other on a support member, and a discoloring layer comprising a cross-linking type resin, which is disposed between the two thermo-sensitive coloring layers, and which is cross-linked in the course of the coating of the thermo-sensitive layers, without being dissolved into any of the two thermo-sensitive coloring layers.

Abstract: A ski binding having both a toe jaw and a heel holder. An electrical circuit is incorporated in the toe jaw and heel holder and indicates whether the ski boot is correctly clamped therebetween. The electrical circuit includes switch contacts located at strategic points on the toe jaw and the heel holder to indicate when the sole of the ski boot is not properly oriented relative to the toe jaw and heel holder.

Abstract: An elastic rail fastening device which uses a metal spike having a projecting jaw, the lower part of the spike being buried in a concrete support. A deformed S-shaped plate spring is provided with one end contacting the upper surface of a spring receiver, a first bent-down portion urged downwardly for depressing the upper surface of the rail flange as laid on the concrete support, a middle portion having the upper surface contacting the projecting jaw, a second bent-down portion for contacting the side of the spring receiver, and the other end contacting the side of the rail flange. The spring receiver is interposed between a guide on the concrete support and the second bent-down portion, whereby the spring receiver pushes up the one end of the spring.

Abstract: A wrench having an adjustable jaw on a neck slidably supported by a guide on a handle with segmental threads on at least one side of the neck. An adjusting nut is threaded on the neck and has segmental threads rotatably and drivingly engagable with the threads on the neck. The threads on the neck are axially slidable between the ends of the segmental threads on the nut in at least one rotated position of the nut. A U-shaped spring has spaced arms which springably engage the opposite axial faces of the nut to confine the nut therebetween. The spring has a connecting bight which is nonrotatably opposed to wrench handle. The arms of the spring defining openings through which slidably and nonrotatably pass the neck.

Abstract: A method for operating a water-jet pump, in which the water needed for operation of the pump is recirculated in a cycle. The water is pressurized by means of compressed air at a substantially constant air pressure and the compressed air is used to drive out the water through the water-jet pump. Expanding the compressed air in a defined expansion space withdraws heat from the water by absorbing such heat in the air during and after its expansion. Apparatus for operating a water-jet pump includes a pair of ejecting receptacles and a first water valve for alternate connection of the ejecting receptacles to the pressure side of the water-jet pump. Second water valves return to the ejecting receptacles water which has been discharged from the water-jet pump.

Abstract: A change-speed transmission in which gear-ratios are established by engagement of appropriate fluid-pressure operated friction brakes and clutches includes a manually-operable control for partially-engaging, to provide retardation of a vehicle, those friction brakes and/or clutches not in use at any time in establishing a particular gear-ratio. The control operates valves which ensure that the rates of power absorption per unit friction area in all partially-engaged brakes and/or clutches is approximately equal and that the degree of retardation so provided decreases with each down-shift of the transmission.

Abstract: A strip material is subjected to an end bending step, and subsequently the bent ends of the strip material, namely, those portions of the strip material which are located adjacent to its abutting ends, are pre-coined to increase the accuracy in the region of the abutting ends, followed by a conventional U-bending and a final coining step, thereby producing a cylindrical material. The use of the pre-coining step for the abutting ends improves the circularity of the cylindrical member.

Abstract: A rotation indication system having an improved sensing device for determining the velocity of a rotating body is disclosed. The improved sensing device is tubular in configuration and includes a source of magnetic flux and two pole pieces that define a split magnetic field. The sensing device is mounted in close proximity to a rotor which is connected to the rotating body. The rotor has apertures which interrupt the split magnetic field producing an output signal with a frequency proportional to the velocity of the rotating body. The sensing device is oriented relative to the rotor apertures so that each pole piece is alternatively in register with an aperture to produce the desired output signal. Since the sensing device is tubular in shape, it can be rotated about its axis to obtain the desired orientation with the rotor apertures, thus permitting the use of the sensing device with a wide range of rotor diameters having various aperture spacings.