Motor vehicles – Power – Electric
Patent
1977-01-24
1978-02-14
Mitchell, David M.
Motor vehicles
Power
Electric
180 15, 180 74, 280 1111E, 280 8704A, A63C 1712
Patent
active
040733564
ABSTRACT:
A skateboard having a fifth wheel attached to the board and coupled to a motor mounted on the board for driving the board in response to operation of the motor. The fifth wheel is attached to the board near the longitudinal center of the board and extends through a slot in the board for coupling to the motor. The board is resilient and the diameter of the driven wheel is of such dimension in relation to the height of the board above the ground and of the trucks that support the board, and in relation to the resiliency of the board and the height of its attachment to the board that drive wheel does not contact the ground to drive the board unless the weight of a person on the board is distributed toward the longitudinal center of the board so as to flex the longitudinal center of the board toward the ground.
REFERENCES:
patent: 823385 (1906-06-01), Beauford
patent: 854299 (1907-05-01), Matson
patent: 1672700 (1928-06-01), Vass
patent: 1694671 (1928-12-01), Rodelli
patent: 1784761 (1930-12-01), Smith
patent: 2239122 (1941-04-01), Stokes
patent: 2257653 (1941-09-01), Russell
patent: 2544996 (1951-03-01), Kander
patent: 3035854 (1962-05-01), Johnston
patent: 3224785 (1965-12-01), Stevenson
"41ST Avenue Skateboards" Skateboarder Magazine, vol. 2, No. 6 Aug. 1976.
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