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SURFBOARD FINS
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Technical Examples
- A motorized surfboard with substantially flat and smooth top and bottom surfaces, a maximum thickness of three inches or less and no protruding parts other than fins extending from a rear, bottom portion of the surfboard. The motorized surfboard is configured to perform in substantially the same manner as a traditional surfboard and is unaffected by the presence of a motor other than the improved performance by the thrust provided. Further provided is a motorized surfboard configured with an electric motor of the type used in toy boats and planes. The motor may be controlled by signals from a throttle embedded in the surfboard and which may be hand controlled by a rider of the surfboard.
- A fin box for releasable attachment of a fin to the body of a surfboard or the like; said fin including a fin-tab associated therewith; said fin box adapted for insertion into and retention within said surfboard; said fin box further adapted for reception and releasable retention of a plurality of fin-tab configurations thereby to releasably retain said fin in fixed relationship to said surfboard; and wherein a first surface of said fin box is of a length and a width sufficient to support said fin entirely so that no portion of said fin is in contact with the body of said surfboard or the like.
- SURFING PARAMETERS GAUGE AND TRANSFER APPARATUS is a velocity, time and space covered by a surfboard measurement apparatus or any other similar solid body, comprising a multifunction module(2) enclosing a sensor adapted to pick up the surfboard displacement related to the water, transforming the data into electrical signals and send them to processing data unit. The multifunction module(2) comprising a housing(11) embedded in the surfboard(1) hull having inside a capsule(10) swiveling related to the housing; and capsule(10) having an external geometric sphere-shaped lobe(4) and a truncated cylinder stem radially connected to the sphere.
- Each of fins is provided with an engage projection having a first width and a engage hole portion having a second width wider than the first width, and the fins are able to be slid while engaging with each other. Accordingly, in case of installing a heat sink to a case of a fan, it is possible to install the fins to the case so that the fins are arranged in a flowing direction of a refrigerant by the fan while engaging with each other. As the result, the refrigerant is able to flow smoothly when passing through the fins by arranging the fins at desired angle. Accordingly, it becomes possible to present a radiation fin, a cooling device and an electronic equipment having such cooling device.
- The watercraft described herein is a surfboard, skim board, dive board, or boat having a propelling fin driven by a standing surfer or boater with an upward and downward stroke which may be used to propel the watercraft by an upward and downward fin motion. The surfboard and dive board in particular are used on water and may be used to ride ocean swells and waves. The surfer or diver stands on the board and moves a vertical handle upwardly and down-ward. The lower end of this handle is pivotally attached to a parallel bar device having attachment means to the board at a forward end of the parallel bar device and having attachment means to a fin at the aft ward end of the parallel bar device. The fin is generally horizontal and is driven thru the water up and downwardly by the standing user and propels the board forward at higher rates of speed than can be achieved by prone-paddling. The handle, four bar device, and fin may be stowed within the body of the board when in a non-propelling position and so allow the surfer or diver to lie upon and paddle the board in standard surfboard prone paddling fashion while also enabling the board to be ridden as a standard surfboard upon the ocean waves.
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