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JPS58140900U |
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JPS58130896U |
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JPS5837756Y2 |
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JPS5837755Y2 |
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JPS58124398U |
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JPS58121787U |
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JPS58139896A |
PURPOSE: To enable to steer a ship by operating a single handle, by a method wherein a pair of balanced-type propeller blade reciprocating mechanisms and a mechanism for rectilinear and parallel movements of a handle are provided through...
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JPS58120762U |
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JPS5836639Y2 |
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JPS58110596U |
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JPS58118495A |
PURPOSE: To adopt a propulsive device equipped to a portable boat in accordance with a type of the boat, by removably mounting a propulsive unit through a combining means to a body of the rearmost part of the boat consisting of a main un...
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JPS5895861U |
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JPS5830200B2 |
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JPS5893595U |
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JPS5859000U |
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JPS5815280Y2 |
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JPS5825179U |
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JPS586697U |
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JPS58639Y2 |
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JPS57204997U |
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JPS5759436Y2 |
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JPS57195998U |
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JPS57192897U |
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JPS57174199U |
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JPS57163500U |
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JPS57158193A |
PURPOSE: To increase the strength of an oar and shape the oar to easily capture water by constitute an oar blade from front and rear leathers and an oar shaft holding portion connected to either of the front or rear leather. CONSTITUTION...
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JPS57158194A |
PURPOSE: To enable a clutch to be engaged with or disengaged from an engaging member by finger tip control for simplifying attaching-removing operation of an oar by providing a guide groove in a clutch body so that a projection of the en...
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JPS57153099U |
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JPS57151199U |
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JPS57148597U |
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JPS57134389A |
PURPOSE: To make it unnecessary to replace a stretcher support beam every time a fitting position is changed by fitting thin rails on both sides of a lengthwise direction of a boat inside a cockpit of a rowboat and providing an expansion...
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JPS57134376A |
PURPOSE: To prevent the invasion of water, by integrally providing a cockpit on a deck and making the deck as a main-strength member and coupling both the side parts of the decks to each other with a frame so that the cockpit is interpos...
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JPS57130797U |
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JPS57130881A |
PURPOSE: To manufacture boats having large strength and a great bouyancy at a low cost by forming a shell plating portion and inner bottom plating portion of a hull in a blow molding method or the like using molds and as well by joining ...
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JPS57126790A |
PURPOSE: To obtain propulsive force by enabling a pair of front and rear fins to be driven by the strength of human legs. CONSTITUTION: Left and right pedals 4 are engaged, through a gear casing 2, with a fin drive shaft 12 fitted with f...
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JPS57117300U |
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JPS57117293U |
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JPS5781998U |
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JPS5767894U |
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JPS5752393U |
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JPS5746095U |
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JPS5733086A |
PURPOSE: To enable the use of a propeller for arbitrary boats and make the propeller portable, by dividing a propelling section and the boat body from each other and by disassembling a treading actuation section, the propelling section a...
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JPS5733598U |
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JPS571797U |
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JPS57499U |
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JPS56174400U |
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JPS5655116Y2 |
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JPS5655117Y2 |
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JPS56148991U |
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JPS56124590A |
PURPOSE: To fix a holder to a rigger readily after the adjustment of its position by compressing and fixing a holder attaching part which is screwed to the tip of the rigger by a bolt. CONSTITUTION: A holding member 63 is screwed to the ...
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