摘要:
An improved air-intake system and engine layout for use on a small watercraft provides for a lower temperature, vapor fuel/air charge with less water vapor content. The watercraft includes an engine-air intake system incorporating an air-intake box which inhibits the engine from intaking water present in the engine compartment, especially during high speed maneuvering. An extended flywheel case is also provided that prevents water located in the engine compartment from being sprayed by moving parts directly into the air-intake box. Furthermore, the improved air-intake system of the present invention incorporates external air-intake valves that prevent water from entering the engine and propulsion compartments through the air intakes while the watercraft is in an inverted.
摘要:
Essentially colorless, transparent polyimide coatings and films prepared by combining aromatic dianhydrides with para-substituted aromatic diamines are provided. The polyimide coatings and films are produced by a process whereby the dianhydride and diamine monomer components are reacted at temperatures of greater than 80° C.
摘要:
An improved seat design for a small watercraft increases the ability of a rider on the watercraft to monitor activities taking place behind the watercraft. The watercraft includes a contoured rear seat that is wider than the front seat. The wider surface area provides riders with the ability to quickly turn and look behind the watercraft. The rear seat also includes several handles or grips to provide added stability to a watercraft rider.
摘要:
A number of embodiments and accessories for a watercraft that is comprised of a main hull that defines a berthing area to receive a small self-propelled watercraft. The main watercraft hull has no propulsion device of its own and is adapted to be propelled by the propulsion device of the smaller watercraft. The controls of the smaller watercraft are accessible from the passenger compartment of the main hull so that the main hull need carry no controls of its own. Various arrangements for accommodating passengers, permitting attachment of an outboard motor to the main hull for its own propulsion and for improving the utility of the main hull are disclosed.
摘要:
A small, personal watercraft having an improved ventilating system that provides not only ventilating air but also a shroud for an instrument of the watercraft. A compact exhaust system is also provided that extends on opposite sides of a tunnel in which the jet propulsion unit which powers the watercraft is positioned. Transfer pipes extend across the tunnel and across the watercraft to transfer the exhaust gases from the exhaust manifold to the watercraft trap device and also for providing traps to preclude water from entering the engine through the exhaust system.
摘要:
A wear- and seizing-resistant roll for hot rolling has a composition consisting essentially, by weight, of 2.0-4.0% of C, 0.5-4.0% of Si, 0.1-1.5% of Mn, 1.0-7.0% of Cr, 2.0-10.0% of Mo, 2.0-8.0% of V and balance of Fe and inevitable impurities; and has a metal structure comprising a matrix substantially comprising martensite, bainite or pearlite, 0.5-5% in area ratio of graphite, 0.2-10% in area ratio of MC carbides and 40% or less in area ratio of cementite. The roll of the present invention is suitable for work roll in the latter stand of a finishing train of a hot strip mill.
摘要:
A motorcycle is equipped with a water cooled engine and a radiator for the engine. The radiator is mounted to the front fork of the vehicle. A number (symbol) displaying plate is mounted to the front fork ahead of the radiator. An opening is placed adjacent to the mounting plate, and air guides are placed so that the on coming air is guided to the radiator, preferably as a laminar flow.
摘要:
A method of production of a radio frequency accelerator which has a tubular part 1 which forms an acceleration cavity, including a temporary assembly step of making a plurality of component members 11 to 14 which have shapes obtained by splitting the tubular part 1 mate with each other to temporarily assemble them into the shape of the tubular part 10 and a welding step of welding the plurality of component members 11 to 14 together. The temporary assembly step includes a step of placing, inside of the tubular part 1, support members 21 for contacting the inside surface of the tubular part 1 and supporting the tubular part 1 from the inside, and the welding step includes a step of welding the plurality of component members 11 to 14 along the butt lines 51 by friction stir welding.
摘要:
A heat sink (35) is fixed by insert molding to a resin-made motor cover covering a case body fixed to a motor body. A flow-in portion (61) extending along a straight line and branch portions (62) to (66) formed so as to be branched to the flow-in portion (61) are formed in the heat sink (35), a tip portion of a power-feeding terminal (58) is disposed at the branch portion (62), and the tip portion of the power-feeding terminal (58) is disposed at the branch portion (63). In addition, when a molding resin is cast in the flow-in portion (61) and the branch portions (62) to (66) during the insert molding, these power-feeding terminals (58) and (59) are fixed to the branch portions (62) and (63) and terminal parts (58b) and (59b) are positioned by the branch portions (62) and (63).
摘要:
It is possible to change a focal position or spot diameter of an optical stimulation laser beam without causing any misalignment of the optical axis, thus precisely applying optical stimulation to a desired position or region on a specimen. The invention provides a laser microscope comprising an observation light path for guiding an observation laser beam; an optical stimulation light path for guiding an optical stimulation laser beam; and a light-path combining unit for combining these light paths; and the laser microscope also comprises, in at least the optical stimulation light path, a focal-position adjusting unit for adjusting a focal position of the laser beam; an optical-axis misalignment detector for detecting an amount of misalignment of an optical axis between the focal-position adjusting unit and the light-path combining unit; and an alignment unit for adjusting an optical axis position on the basis of the amount of misalignment of the optical axis detected by the optical-axis misalignment detector.