摘要:
A small watercraft includes expanded storage capacity so as to accommodate more of the type of articles that rider's typically what to carry on the watercraft. Such articles include, for example, towels, water skis, tow ropes, etc. One of the storage compartments on the watercraft may be formed by an opening on an upper deck section. A container is affixed to the deck below the opening and has an upper end defined by a flange that extends from walls of the container. The flange is attached to an interior wall of the upper deck section so that the container and the corresponding upper deck section form a storage compartment. The upper end opening of the container, however, has a larger area than the opening in the deck so as to maximize the storage space within the compartment without weakening the deck, and at the same time to minimize the area through which water can enter the hull.
摘要:
The present invention provides a polysaccharide-magnetic metal oxide complex consisting of a polysaccharide derivative obtained by carboxyalkyl-etherifying and unsubstituted or substituted aminoalkyl-etherifying a polysaccharide (the above carboxy group and/or amino group may be of a salt form) and a magnetic metal oxide. The above complex has a slow blood clearance and a low toxicity and is useful as a nuclear magnetic resonance imaging contrast medium.
摘要:
A personal watercraft exhaust system, hull underplate, and speed sensor and sponson arrangement. The exhaust system for the engine provides a compact assembly that incorporates a pair of expansion chamber devices on opposite sides of the tunnel to provide a water-trap effect, effective silencing, and still clear storage compartments of the hull. The sponsons are configured so as to improve the buoyancy and provide stability upon leaning, and the underplate mounts a speed sensor to the rear of but below the jet propulsion unit discharge so as to provide a good speed signal and to protect the speed sensor.
摘要:
A water-soluble carboxypolysaccharide-magnetic iron oxide complex of small particle diameter composed of a water-soluble carboxypolysaccharide and a magnetic iron oxide having a core diameter ranging from about 2 to about 7 nm, wherein the total diameter ranges from about 10 to about 50 nm, the ratio of the total diameter to the core diameter is about 15 or less, and the T.sub.2 -relaxivity ranges from about 10 to about 150 (mM.sec).sup.-1. Said complex has low toxicity and small side effects and is useful in the fields of medical treatment, biology and engineering as an iron-supplementing agent, an X-ray contrast medium, an MRI contrast medium, a reagent for blood flow rate measurement, a carrier for drug administration, etc.
摘要:
A small watercraft includes expanded storage capacity so as to accommodate more of the type of articles that rider's typically what to carry on the watercraft. Such articles include, for example, towels, water skis, tow ropes, etc. At least one of the storage compartments on the watercraft is formed by an opening on an upper deck section. A container is affixed to the deck below the opening and has an upper end defined by a flange that extends from walls of the container. The flange is attached to an interior wall of the upper deck section so that the container and the corresponding upper deck section form a storage compartment. The upper end of the container, however, has a larger area than the opening in the deck so as to maximize the storage space within the compartment without weakening the deck and minimizing the area through which water can enter the hull.
摘要:
A jet propulsion unit for a small watercraft including a secondary thrust arrangement. The secondary thrust arrangement includes a primary valve and a secondary valve arrangement. At least one discharge port is disposed on a hull of the watercraft. A jet propulsion unit is configured to discharge pressurized water from the steering nozzle in a substantially rearward direction from the watercraft or to discharge pressurized water through at least one discharge port disposed in the outer surface of the hull to achieve enhanced steering control of the watercraft.
摘要:
A wheel cover includes a wheel cover body and a flexible annular member positioned therearound. The wheel cover body is formed in approximately a disk form, and a plurality of a through-holes are formed at the outer periphery thereof. The body of the flexible annular member is formed in a configuration that the inner periphery overlaps the outer periphery of the wheel cover body. On a side of the body, there are formed retaining projections at the position corresponding to the through-holes of the wheel cover body. Each retaining projection has a base portion, an intermediate retainer portion, and an extremity grip portion. The base portion is formed to be engaged with the through-hole. The intermediate retainer portion has a larger cross section than the base portion so as to be constricted to pass through the through-hole when it is pressed into the through-hole and hold the wheel cover body in collaboration with the body when the base portion is engaged in the through-hole. The extremity grip portion has a cross section smaller than that of the through-hole.
摘要:
A personal watercraft sponson arrangement has sponsons that are configured so as to improve buoyancy and stability upon leaning. The sponsons are designed to be detachably affixed to the hull of the watercraft through the use of a coupling system.