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Document Number
US Patent 3656571
Issued Date
April 18, 1972
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Abstract
A miniature low-clearance, ground-hugging four-wheeled sports cart for racing and other recreational purposes. The cart is characterized by sheet metal frame construction and variable clearance accomplished by readily separable and exchangeable engine and rear axle and wheel mounts, and readily separable and exchangeable front wheel mounts. The cart can be readily converted from standard to racing height and from standard to racing engine, or vice versa, in a matter of minutes.
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SPORTS VEHICLE - US Patent 3656571 Drawing
Drawing from US Patent 3656571
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Number of Claims:
7
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Owner
Stanley W. Tull Co., Inc. (Minneapolis, MN)
Published
April 18, 1972
Application Number
05/025,178
Filed
April 2, 1970
US Classification
180/11   180/54.1 280/124.134 280/43
Int'l Classification
B62D   21/18   (20060101)  
Examiner
Assistant Examiner
USPTO Field of Search
180/11   180/54F   180/55   180/56   180/57   180/58   180/59   180/60   180/61   180/62   180/63   280/96.1   280/96.2   280/269   280/43   280/106  
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A modified racing vehicle having dimensions such that it can run on a track suitable for a conventional go-kart and which has substantially the characteristics of a single seater formula racing car. The vehicle has no differential on its rear axle (2) and no suspension on its rear and front axles (5) but is provided with weight transfer structure to compensate therefor. The steering geometry of the vehicle is arranged such that, for the radially outer steerable wheel with reference to a turning centre, a castor angle of the kingpin axis increases and the kingpin axis is inclined into the turn as the steering member (6) pivots and the outer steerable wheel is lifted upwards forcing the chassis (1) down whereby a downward force is exerted through the chassis (1) to a non-steerable wheel (4) that is the radially outer with reference to the turning center.

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Description
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