摘要:
This disclosure relates to a boat including a hull which forms a closed engine compartment. The compartment is air-tight at and above the water line or draft level which is formed when the boat is overturned in the water. The boat further includes an air inlet duct and an exhaust duct which extend into the engine compartment. Each of the ducts has one end which opens in the compartment above the draft level, and another end which is out of the compartment and below the draft level, thereby forming an air space in the compartment when the boat is overturned.
摘要:
An exhaust apparatus for a water jet propulsion boat having an engine exhaust passage provided inside an impeller shaft. The exhaust passage opens into the water jet at a position rearward of an impeller. Thus, the length of an engine exhaust pipe can be reduced, and it is possible to reduce the space required for installation of the exhaust apparatus. Since the engine exhaust gas is discharged into the water jet at a position to the rear of the impeller, no cavitation occurs at the impeller portion. Further, it is possible to utilize the engine exhaust gas as a gas layer constituting a pneumatic bearing for supporting the impeller shaft.
摘要:
A small-sized marine craft having a shell including a deck, an engine mounted in a bow portion of the shell, a propulsion device provided on a stern portion of the shell and a steering handle device provided on a bow portion of the shell. A rear part of the deck is protruded at its breadthwise central portion so as to provide a projecting seat portion and step portions on both sides of the seat portion. Stepped flanges are provided on the outer extremities of the step portions. The stepped flange has an upright wall portion protruding substantially upright from the outer extremity of the step portion and a horizontal wall portion extending laterally outwardly from the upper extremity of the upright wall portion.
摘要:
A battery service system for a small-sized marine craft having service terminals provided on a portion of the deck of the marine craft above the water line so as to project from the deck surface. Electric wiring which connects an inboard battery to the engine of the marine craft is made through the service terminals.
摘要:
Disclosed is a tank cap retaining structure which may be applied to a machine in which a plurality of tanks, such as a fuel tank and an oil tank, are disposed side by side. The respective outer surfaces of the associated caps of the tanks are formed such as to be capable of detachably engaging each other. Thus, at the time of supply of fuel or oil, there is no possibility that the tank cap in question may be lost or contaminated.
摘要:
A three-piece resealable can for acidic liquid includes, a cylindrical can body member that includes a screw portion at one end; and a can bottom member that contacts the can body member so as to close an opening portion of the other end of the can body member. The can body member includes a cylindrical first steel sheet, Ni plating that is formed on an inner circumferential surface of the first steel sheet, a polyester film that is formed so as to be disposed on the outermost surface of the inner circumference of the can body member, and a chromate film that is formed between the first steel sheet and the polyester film. The can bottom member includes a second steel sheet, and Sn plating that is formed on the can body member side of the can bottom member.
摘要:
A compound represented by formula (1) or salt thereof and a production intermediate thereof are created. The compound exhibited an excellent antioxidation action in a microsome lipid peroxidation measuring system using a rat liver microsome. Therefore, the compound or salt thereof is useful as an antioxidant. The present invention also provides use of a compound represented by the formula (1) or a pharmaceutically acceptable salt thereof for production of an antioxidant.
摘要:
A vibrating gyroscope according to this invention includes a ring-shaped vibrating body 11 having a uniform plane, a leg portion 15 flexibly supporting the ring-shaped vibrating body and having a fixed end, a fixed potential electrode 16, and a plurality of electrodes 13a, 13b, . . . , 13f formed on the plane with a piezoelectric film sandwiched between an upper-layer metallic film and a lower-layer metallic film in a thickness direction thereof. In this case, in a representative example shown in FIG. 1, when one of driving electrodes 13a for exciting a primary vibration of the ring-shaped vibrating body 11 in a vibration mode of cos Nθ is set as a reference driving electrode, the plurality of remaining electrodes 13b, . . . , 13f are disposed at specific positions. Such disposition allows this vibrating gyroscope to excite a primary vibration in an out-of-plane vibration mode of cos 2θ as well as detect a uniaxial or biaxial angular velocity by adopting a secondary vibration detector in an in-plane vibration mode of cos 3θ.
摘要:
Steel sheet for container use able to realize superior corrosion resistance and canmaking ability, wherein at least one side of the steel sheet is provided with a chemical conversion coating film including a mixture of a zirconium oxide compound and a zirconium phosphate compound, the zirconium oxide compound is segregated at part or all of a region of 40 to 100% from the surface with respect to the total thickness of the chemical conversion coating film, and the zirconium phosphate compound is segregated at part or all of a region of 0 to 40% from the surface with respect to the total thickness of the chemical conversion coating film.