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JP2011219073A |
To provide a rear-view mirror that is unobstructive to a rower and that has an excellent field of view in the rear.Having a rear-view mirror on a paddle ensures a field of view in the rear and eliminating an extra projection on a boat. A...
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JP2011057118A |
To provide a rocking type lateral fillet propulsion man-power ship efficiently generating lift force with symmetrical wings disposed outside the radius of rocking rotation as well as concentrating all components concerning rocking motion...
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JP2011504152A |
A watercraft propulsion device 10 has a linkage comprising a vertical drive link (20), a support link (12), an upper control link (50) having a forwardly extended handle bar (52), and a lower propulsion link (30) having a horizontal prop...
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JP4625493B2 |
To provide a human-powered water bicycle, with even a weak leg strength, by amplifying reciprocating motion of treadle levers and transmitting it to a propulsion screw. A hull 100 is provided with: treadle levers 1; a screw connected to ...
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JP2010188990A |
To provide a pedal-driven boat having a system where a great deal of driving force comparable to the efficiency of a hand-oared boat can be acquired, compact and light weight, so that a person would hope to privately own the boat.In a pe...
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JP2010523386A |
The present invention relates to a propulsion mechanism provided with two independent actuators, the first actuator being connected via a first connection member CD to a first converter ED, RLD mounted on a transmission shaft AT. Further...
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JP2010120486A |
To provide a water bicycle having excellent propulsion and provided with a clutch structure capable of maintaining the forward-reverse state and the neutral state of a hull.A propulsion driving device 100 provided on a hull 1 has a first...
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JP4446331B2 |
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JP4403564B2 |
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JP3156600U |
To provide a clutch capable of rowing an oar while a rower of a rowing boat faces a forward direction. A clutch is combined with two kinds of gears, that is, an inner gear and two or more mountain gears, the blades are inverted, and a tw...
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JP4277941B2 |
To provide waterborne stilts easy in changing the direction even at a low speed and in a stopped condition, with excellent stability and smooth drive even before riding. A steering rod 3, a propulsion fin 4 and a rudder 5 are provided on...
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JP2009519180A |
A frameless inflatable pontoon boat in which the pontoons and connecting section have a generally flat top and a generally flat bottom. Sufficient rigidity is achieved in the inflatable connecting section and the pontoon by the use of in...
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JP2009096214A |
To provide a water-boat capable of having a variety of moving operation.When an operator rotationally reciprocates a handle 14, a fin member 21 is made to make fin motions according to the rotational reciprocation of a handle shaft 13. W...
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JP4258736B2 |
An object is to provide a Ro-scull which can suppress a decrease in thrust force by water resistance generated during turn-over operation and can realize high-speed cruise of a boat. The Ro-scull has a Ro-arm 1 and a Ro-blade 2 having a ...
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JP4250223B2 |
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JP2008207756A |
To provide a canoe capable of being paddled by even children, aged persons, persons under rehabilitation without a danger of overturning and having an easy propulsion mechanism.This canoe is provided with (a) a frame body provided in a b...
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JP2008189115A |
To contrive an Aleut Greenland type paddle so that everyone may easily obtain sufficient propulsive force since the paddle requires skillfulness to obtain the propulsive force because the paddle has narrow blade area and has a different ...
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JP3142838U |
To provide a catamaran which can be folded and can be used for a canoe and a water cycle so as to be easily moved and transported. A water cycle to which a float for separate use can be attached is arranged in the center, and an aluminum...
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JP2008080890A |
To provide a rowlock supporting member capable of easily finely adjusting an angle of a straight pin (shaft part).The rowlock supporting member is provided with the straight pin (shaft part) 7 inserted to a hole part provided on a rigger...
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JP2008081093A |
To provide a surfboard capable of self-traveling by obtaining a thrust by a movable fin when the surfboard is operated in a slalom.A sideslip is suppressed by a pivot fin 2, and thee rear side of the surfboard 1 is strongly kicked latera...
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JP2008068101A |
To provide the design of a swim fin, which gives high safety and big pleasure.A method, which increases the dynamic lift of a hydrofoil and the swim fin and decreases resistance, is disclosed. This method includes the hydrofoil (104), wh...
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JP2008068695A |
To provide miniature training device which has an upset preventing means, and can eliminate a danger in riding the device, and can be used by a plurality of users at the same time, and can freely move in a pool.An underwater bicycle is a...
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JP2008056219A |
To provide a propelling device such as a scull and a paddle easy to use for everyone without maintenance, in regard to the present condition wherein a small boat uses an outboard motor and comprises a sub engine for emergency but as the ...
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JP4034934B2 |
A novel water craft, which may include a hull with a keel, having propulsion means extending below the water line. The propulsion means comprises a pair of flappers each adapted to oscillate through an arcuate path in a generally transve...
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JP2007196727A |
To provide a foot rowing boat propulsive through a simple and highly efficient horizontal type fin to mechanically reproduce an idealistic kinetic locus of the caudal fin like a dolphin. This foot rowing boat has the fins 6, 7 mounted on...
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JP2007190994A |
To provide an oar shaft improved in operability in water by reducing water resistance acting on the oar shaft composing an oar used for a boat or the like. In the oar shaft composing the oar by joined to a paddle member, at least a joini...
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JP3951217B2 |
To provide an inexpensive propulsion machine having excellent safety and quietness in a structure without exposing a projection in the water and capable of easily reversing, in a human power driving type boat. In a driving device, a driv...
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JP2007137404A |
To provide an easily handled paddle since a conventional paddle requires practice such as putting in twisting.Pressing plates are made to two sheets are crossed using a hinge 6. Thereby, even if they are pulled and pushed, progression is...
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JP2007069880A |
To solve a problem that although a scull for a Japanese vessel and an oar for a boat are utilized as a human power propulsive unit, in the oar and the scull, a non-skilled person has difficulty in performing operation, the operation is i...
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JP2006298339A |
To provide a water/underwater sporting good obtaining thrust by a simple structure and leg stroke reciprocation and being advanced.In the on-water/underwater movement sporting good, a rotation shaft is provided at a position where an are...
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JP3125634U |
To increase the strength of an oar by making a through hole in the center of the oar 1 and inserting an iron pipe into the through hole. A through hole 2 is made in the center of an all 1 of a rowing boat, and an iron pipe is passed thro...
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JP3755725B2 |
To provide a boat capable of reducing the manpower at the start by pedaling operation, ensuring the accelerating characteristic and the safety, and being transported by loaded on a trailer or a passenger car by improving a conventional m...
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JP2006036173A |
To provide a leisure boat which is lightweight, compact, loadable in a cabin, easy to convey from a parking lot to a water front, and easy to get on the boat while the posture of the boat is not unstable when a person gets on the boat on...
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JP2005335552A |
To provide a means which can protect the human body by applying a special display on accessories and equipment or the like being used in the sea water, and imparting an effect which dangerous marine creatures such as a shark instinctivel...
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JP2005255132A |
To provide hand rowing paddles for a boat allowing forward travel, change of direction, and reverse travel only by operating a hand rowing lever (1) supported by a shaft (2) and a bearing (3) on the boat.The shaft (2) and the bearing (3)...
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JP2005178646A |
To provide an oar capable of reducing the air resistance generated in rowing and reducing a drop of the boat speed while the bending stiffness of the oar 14, its weight, and the position of the center of gravity are maintained.The oar 14...
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JP2005145176A |
To provide an oar which suppresses the surplus specifications and the increase of its weight and cost while improving its compressive strength at least in the neighborhood of the fulcrum of an oar shaft composing the oar.The oar has a we...
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JP2005138814A |
To provide a hand row oar for a boat as improvement of a conventional arrangement involving such problems that the boat rolls much, the rower must be accustomed to a certain degree by introducing a twist, and is not convenient when sitti...
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JP2005126024A |
To enable a boat that can be rowed only in a backward direction to move forward by a conventional way of rowing, and to move forward at boosted speed.The manual type oar is structured to move forward at boosted speed by engaging large an...
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JP2004359117A |
To solve the problem wherein a human body having a low function as an underwater movement body makes strokes in water with the arms of small muscular strength and the hands with a small area at swimming and is propelled by twisting and t...
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JP2004256041A |
To provide a man-power drive mechanism capable of effectively converting man-power to a motive power suitable for a vehicle driven by a bicycle, and a three-wheeled bicycle, a four-wheeled bicycle.Pedals 3, 16 are mounted to sliders 2, 1...
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JP3562526B2 |
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JP2003261096A |
To provide an oar for a rowboat wherein one can efficiently paddle without much fatigue and raise pitch.The oar 1 for the rowboat is provided with a shaft 2 for operating rowing, and a paddle part 3 provided in at least one end side of t...
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JP2003237687A |
To comfortably navigate with excellent stability.A lateral pair of outriggers 41 (L, R) that can be put in and out in a cross direction through link mechanisms 40 (L, R) in a position above a draft line L are provided at both side parts ...
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JP2003182684A |
To solve a problem that water excursion requiring a large-sized sightseeing boat or rafting using a river flow costs much and is not perfectly safe and to provide a water excursion apparatus which is inexpensive, can easily be operated a...
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JP2003182686A |
To provide a manually operating type propulsion unit for a small-sized boat which can easily be operated with a small force and without needing a skill.This propulsion unit for a small-sized boat is provided with an operation rod 11 for ...
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JP2003118692A |
To provide a boat capable of running by itself irrespective of the weather, where in a conventional self-propelled boat, it is difficult to run by itself when natural forces cannot be used such as waves or wind.The boat comprises a bow p...
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JP2002316691A |
To enable to play at outdoor waterfront easily at a low cost regardless of season.One or a plurality of bottom surfaces B each having a part of a bottom surface A of a boat dropped downward are provided. A hot water and hot air generatin...
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JP2002225797A |
To provide a compact pedaling force propelling boat for leisure sports, capable of comfortably managing with small resistance, having excellent stability, and easily being carried.This pedaling force propelling boat 1 comprises a hull 2 ...
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JP2002205690A |
To solve the problems of requiring a rudder and a device such as a handle for operating the rudder to change the direction of a pedaled boat propelled by driving pedals, requiring a certain degree of radius of gyration to change the dire...
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