Patent US7077414 - Self propelled scooter - Google Patents

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  • The present invention relates to a self propelled scooter. The device comprises a deck on which a user stands having a transmission housing mounted on the lower surface thereof. Within the transmission housing is a series of gears. A chain encompasses the gears as well as a gear on a front wheel. One of the gears winds a spring mechanism enclosed within a casing. On an end of the casing is a release gear and attached transmission drive sprocket. A spring biased pawl rests against the gear preventing its rotation.

    The present invention relates to a self propelled scooter. The device comprises a scooter deck 1 having an upper surface on which a user stands and a lower surface having a transmission housing 2 mounted thereon. The deck includes a front wheel 32 and a rear wheel 33 allowing the scooter to roll on an underlying surface. Within the transmission housing is a series of gears 41 encompassed by a chain 3; the chain also encompasses a gear positioned on the front wheel. Received within the housing is a casing 4 having a plurality of torsional springs 55 positioned therein. A winding gear 31 is attached to a side of the casing and is operably connected with the springs via a clutch mechanism. On an opposing end of the casing is a release gear 5 and an attached transmission drive sprocket 6. A spring biased pawl 7 rests against the release gear preventing rotation of the drive sprocket 6.

  • The present invention relates to a scooter, and more particularly, to a self propelled scooter that can be propelled by the weight of the user applied at periodic time intervals to the scooter.

    Therefore, in accordance with the present invention, there is provided a specially constructed scooter that combines the features of a self propelled scooter with the ability to simply coast on the scooter and not continue the pumping action.

  • The present invention relates to a self propelled scooter employing a uniquely designed spring-loaded propulsion system that is automatically rewound by manual propulsion of the scooter.

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Basically, the present invention comprises two devices. First, there is a wheel that is bi-stable and has two axle positions, one of which is in the center of the wheel and therefore appropriate for coasting of the scooter and the other axle position is offset or eccentric from the center of the wheel and therefore is applicable to use of the pumping motion to self propel the scooter. Secondly, the other basic device is a mechanism, activatable by a user, to enable that user to shift the axle position between those two axle positions to take advantage of the features of both axle positions.