Land vehicles – Wheeled – Occupant propelled type
Patent
1986-07-18
1989-02-28
Mitchell, David M.
Land vehicles
Wheeled
Occupant propelled type
74141, 192 41A, 280251, 280 87042, D21227, B62M 104
Patent
active
048078964
ABSTRACT:
An operator powered skateboard including a platform, a drive assembly mounted to the platform about a pivot axis for axial displacement. The drive assembly including an external power assembly engaging a skateboard axle for causing rotation of the axle in one direction and a handle connected to the external power assembly for selectively engaging the power assembly. The skateboard including at least two pairs of wheels, one pair connected to the drive assembly, the other pair mounted to the platform about a second pivot axis for independent axial displacement.
REFERENCES:
patent: 1409103 (1922-03-01), Hawthorne, Sr.
patent: 1653889 (1927-12-01), Clark
patent: 3884501 (1975-05-01), Elias et al.
patent: 4082267 (1978-04-01), Flavell
patent: 4094372 (1978-06-01), Notter
patent: 4289325 (1981-09-01), Whitacre
patent: 4319760 (1982-03-01), Romano
patent: 4411442 (1983-10-01), Rills
patent: 4515362 (1985-05-01), Lin
patent: 4595209 (1986-06-01), Tsai
patent: 4606548 (1986-08-01), Little
Chaikin Douglas A.
Mar Michael
Mitchell David M.
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