Abstract: A copolymer of sulfur dioxide and polyalkylpolysilylstyrene composed of repeating units of formula I: ##STR1## where R is a lower alkyl group, p is an integer between 2 and 5, q in an integer between 1 and 10 representing the sequence length of polyalkylpolysilylstyrene, and n is a number between 5 and 10,000, and having a number-average molecular weight of 2,000 to 2,000,000. This copolymer is a novel and useful positive resist material which is highly sensitive to light, or electron-beam or X-ray radiation and is of high dry etching resistance.

Abstract: A front and rear wheel drive vehicle having straddle-type seating. A power train is located beneath the seat and between the footpegs of the vehicle. The engine employs parallel output shafts located on either side of the crankshaft to drive power transmission means to the front and rear axles. A speed change mechanism is contained within the engine case along with the output shafts and includes a first transmission shaft between the crankshaft and one of the output shafts. In one embodiment, the cylinder block of the engine is illustrated as being inclined toward the speed change transmission such that the cylinder block, cylinder head and head cover do not extend laterally outwardly beyond the engine case. To employ both output shafts, sprockets are arranged on each shaft with a coupling chain. The orientation of the output shafts provides for a narrower engine profile.

Abstract: A clutch system comprising a clutch input member, a clutch output member, a primary friction clutch connected to said input member, a secondary friction clutch placed between said input and output members and operatively associated with said output member, a mechanism for disengaging said primary friction clutch, and thrust generating mechanism interconnecting said primary friction clutch and said secondary friction clutch for generating thrust to couple said secondary friction clutch when torque is transmitted by coupling of said primary friction clutch.

Abstract: A main body of an industrial truck is formed with mounting bracket sections to which an instrument assembly and counterweight for a tractor and a mast assembly and counterweight for a forklift truck are selectively mountable, so that the industrial truck serves as the tractor and the forklift truck. Additionally, a top panel having an operator's seat is mounted on the main body in a manner to be turnable end for end in accordance with the intended purposes.

Abstract: Arrangement for inserting a spark plug in a V-type engine cylinder head, comprising a separate sleeve surrounding the spark plug and removably insertable in the wall of the combustion chamber by screw threading. The spark plug extends through the cam chain chamber and can be removed without interference with the operation of the endless cam chain.

Abstract: The present invention is directed to a V-type multi-cylinder internal combustion engine mounted on the middle portion of a vehicle body having front and rear wheels. The internal combustion engine has a supercharger comprising an exhaust turbine provided in an exhaust passage of the engine and a compressor provided in an intake passage of the engine and arranged to be driven by the turbine. In the present invention, an expansion chamber is interposed in the intake passage so as to be positioned between an outlet opening of the compressor and respective intake pipes extending from respective intake ports of the cylinders of the engine. The expansion chamber is placed in a space defined by a V bank of the engine.

Abstract: A two wheel vehicle comprising a vehicle body having a front wheel and a rear wheel with an internal combustion engine mounted on the mid portion of the frame is provided. The engine is provided with a supercharger having an exhaust turbine provided on an exhaust passage side thereof and a compressor provided on an intake passage side thereof and arranged to move with the turbine. The supercharger is positioned in a space defined by the engine and a supporting frame which supports the engine and is interposed between the engine and the front wheel. The defined space is remote from the driver so that the driver is not affected by the supercharger. The supercharger may be mounted on the supporting frame so that it is protected against external frontal or lateral forces.

Abstract: A baking and cooking tray sheet comprises a base stock of neutral paper or cardboard weighing 150 to 500 g/m.sup.2 on the dry basis , and a barrier layer provided thereon and composed mainly of a polyvinyl alcohol and/or starch and a water-resisting agent. A coating layer of silicone resin is further applied on the barrier layer. The tray sheet should have a water vapor permeability of greater than 100 g/m.sup.2 for 24 hours and an air permeability of greater than 5,000 seconds. The tray sheet is prepared by the steps of coating one or both sides of the base stock with a coating liquid composed mainly of a polyvinyl alcohol and/or starch and a water-resisting agnet, followed by drying, and of applying one side of the resultant sheet with a coating liquid of silicone resin, followed by drying.

Abstract: A baking and cooking tray sheet comprises a base stock of neutral paper or cardboard weighing 150 to 500 g/m.sup.2 on the dry basis, and a barrier layer provided thereon and composed mainly of a polyvinyl alcohol and/or starch and a water-resisting agent. A coating layer of silicone resin is further applied on the barrier layer. The tray sheet should have a water vapor permeability of greater than 100 g/m.sup.2 for 24 hours and an air permeability of greater than 5,000 seconds. The tray sheet is prepared by the steps of coating one or both sides of the base stock with a coating liquid composed mainly of a polyvinyl alcohol and/or starch and a water-resisting agent, followed by drying, and of applying one side of the resultant sheet with a coating liquid of silicone resin, followed by drying.

Abstract: A lift device for a load transporter such as a fork-lift vehicle, comprises a load carrier for holding a load, a pair of chains, one end of each of which is connected to the load carrier, a pair of gears engaging the chains, a pair of outer masts secured on a base plate, a pair of inner masts capable of sliding along the outer masts and on which the load carrier is slidably mounted, a pair of first cylinders, each connected to a gear bracket rotating supporting one of the gears a first cylinder rod, a pair of second cylinders, each connected to the free end of a chain via a second cylinder rod, and means for actuating the first and second cylinders by fluid pressure.

Abstract: A supercharger apparatus is provided which comprises a reciprocating type internal combustion engine having a block, an exhaust passage and an intake passage, and also having an exhaust turbine which is provided in said exhaust passage. A compressor is provided in said intake passage, along with a shaft for interconnecting said turbine and said compressor, the shaft being supported in a bearing hole which is formed in the engine block. A lubrication oil passage, which is in communication with the bearing hole, is formed in the engine block.

Abstract: A supercharger apparatus for an internal combustion engine having an intake passage member coupled to the internal combustion engine. The intake passage member comprises a compressor, a pre-chamber on the downstream side of the compressor, a throttle valve on the downstream side of the pre-chamber, and a heat insulating elastic member interposed between the compressor and the pre-chamber and between the pre-chamber and an intake port of the engine. The portion of the intake passage that has the pre-chamber and the valve is supported in a floating condition by said elastic member on both ends thereof.

Abstract: A turbosupercharger includes an exhaust turbine and a compressure, each connected together by an intermediate shift. The exhaust turbine is disposed in an exhaust passage positioned at downstream side of an exhaust manifold positioned in front of an engine and connected to an exhaust port of the engine. The compressor is disposed in an intake passage connected to an intake port of the engine. The exhaust port and intake port are positioned at front and rear sides of the engine, respectively. The exhaust turbine and the compressor are disposed sidy by side and transversely provided with respect to a frame of motorcycle and in front of said engine. The rotational axis of the turbosupercharger is rotated downwardly at the side near the engine, and the compressor is provided with a scroll opening oriented upwardly. Further, the exhaust manifold is covered with a cover member spacedly positioned in front of the manifold.

Abstract: Frame structure for a fork lift truck includes a standardized steering axle assembly provided with a pair of longitudinally spaced pivots, which define a longitudinal swing axis of the axle assembly. The frame structure comprises a rigid rear frame sub-assembly including a horizontal plate member provided on its lower surface with a pair of projections defining recesses for receiving the pivots of the axle assembly. The horizontal plate member is integral with a pair of forwardly projecting mounting plate members whose front end portions are longitudinally adjusted along side surfaces of box section members provided for side panels of the frame structure, and then welded to the box section members. The rear frame sub-assembly is standardized and can be used to manufacture various types of frame structures having different wheel bases.

Abstract: A method for reducing the caking property of coal, by contacting coal with sulfur dioxide in an amount at least 0.5 times the amount of the coal on a weight basis, at a temperature of at least 120.degree. C. under a pressure of at least 10 Kg/cm.sup.2, and separating the treated coal from the sulfur dioxide, whereby to reduce the caking property of the coal and to render the coal more easily pulverizable.

Abstract: A motorcycle engine mounting structure having a head tube (23), a main frame pipe (21) extended rearwardly from the head tube, and an engine (60). In order to increase the freedom of design for mounting an engine and to ensure a radiator mounting space, a pair of supporting members (40, 50; 240, 250) are suspended from the front part of the main frame (21), and the engine (60) is supported in the front part through the supporting members.

Abstract: A motorized two-wheeled vehicle comprising a frame having front and rear wheels and a vertical V-type engine mounted on the frame in a central region between the wheels. The engine comprises at least one pair of left and right cylinders arranged in the form of V and a pair of left and right carburetors are mounted rearwardly of the cylinders and are connected to the respective cylinders by intake pipes. A cylinder head of each cylinder is secured to a cylinder block such that the head is angulated to assume an angular position in which the axis of the cross-flow pattern is inclined inwardly and towards the rear with respect to the longitudinal axis of the engine to form an angle therewith.

Abstract: An apparatus cleans the exhaust gases of a motorcycle by feeding secondary air to the exhaust path of the engine. The amount of secondary air fed is controlled in proportion to the speed of the motorcycle. The apparatus includes a control valve which is operated to be opened and closed in response to the opening and closing of the throttle valve of a carburetor of the engine.

Abstract: An internal combustion piston engine drives a rotary supercharger of the positive displacement substantially continuous flow type, the supercharger turning in proportion to the engine speed. A power control valve is positioned upstream from the supercharger for controlling the flow of air-fuel mixture to said supercharger. Objectionable fluctuations in speed of the engine when idling are minimized by a secondary valve operatively positioned between the supercharger and a valved intake passage leading to the combustion chamber of the engine. The operation of the secondary valve and the power control valve are coordinated so that the secondary valve remains in idle position when the engine is idling but remains in open position during all other engine operating conditions.