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US 4,807,896 AGranted
Operator powered skateboard
OwnerRandy J. Philippiinventor
Life of this patent
Estimating the term…
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.
Claims18
An operator powered skateboard, comprising:
- a platform;
- a drive assembly mounted to the platform by a pivot and swing arm structure for movement about a first pivot axis, the drive assembly including:
- a housing having a bore extending therethrough, the housing having a longitudinal axis perpendicular to the first pivot axis, the housing having a slot extending along a substantial portion of the longitudinal axis;
- and
- an axle extending through both ends of the housing bore and being rotatably supported therein;
- operator power means for causing rotation of the axle with approximately constant torque, the operator power means including a threaded spool within the housing and fastened to the axle, the spool having a longitudinal axis parallel to the longitudinal axis of the slot and a cable fastened at one end to the spool and the other end of the cable exiting the drive assembly housing and fastened to a handle means for selectively engaging the operator power means, the cable being tangentially fed to the spool through the slot and means for rewinding the spool comprising a spring means for storing rotational energy as the cable is unwound from the spool, the spring means fastened at one end to the axle and connected to the housing at the other end;
- and
- at least two pairs of wheels, one pair connected to the axle of the drive assembly, the other pair of wheels mounted to the platform about a second pivot axis, the first and second pair of wheels pivoting in opposite directions about their respective axes upon tilting of the platform for independent axial displacement, the one pair connected to the drive assembly having clutch means for permitting rotational force by the operator power means to be applied in one direction only,
- whereby, pulling the handle during axial displacement, such as when the platform is tilted, causes the operator power means to exert a constant torque rotational force to the wheels.
6 more elements
An operator powered skateboard, comprising:
- a platform;
- a drive assembly mounted to the platform by a pivot and swing arm structure for movement about a first pivot axis, the drive assembly including:
- a housing having a bore extending therethrough, the
- housing having a longitudinal axis perpendicular to the first
- pivot axis, the housing having a slot extending along a
- substantial portion of the longitudinal axis;
- and
- an axle extending through both ends of the housing bore and being rotatably supported therein;
- operator power means for causing rotation of the axle including a threaded tapered spool within the housing and fastened to the axle, the spool having a longitudinal axis parallel to the longitudinal axis of the slot and a cable fastened at one end to the spool and the other end of the cable exiting the drive assembly housing and fastened to a handle means for selectively engaging the operator power means, the cable being tangentially fed to the spool through the slot and means for rewinding the spool comprising a spring means for storing rotational energy as the cable is unwound from the spool, the spring means fastened at one end to the axle and connected to the housing at the other end;
- and
- at least two pairs of wheels, one pair connected to the axle of the drive assembly, the other pair of wheels mounted to the platform about a second pivot axis, the first and second pair of wheels pivoting in opposite directions about their respective axes upon tilting of the platform for independent axial displacement, the one pair connected to the drive assembly having clutch means for permittng rotational force by the operator power means to be applied in one direction only,
- whereby, pulling the handle during axial displacement, such as when the platform is tilted, causes the operator power means to exert a rotational force to the wheels.
9 more elements
An operator powered skateboard, comprising:
- a platform having extended ends, the ends being curved and rising above the platform;
- a drive assembly mounted to the platform by a pivot and swing arm structure for movement about a first pivot axis, the drive assembly including:
- a housing having a bore extending therethrough, the housing having a longitudinal axis perpendicular to the first pivot axis, the housing having a slot extending along a substantial portion of the longitudinal axis;
- and an axle extending through both ends of the housing bore and being rotatably supported therein;
- operator power means for causing rotation of the axle including a threaded spool within the housing and fastened to the axle, the spool having a longitudinal axis parallel to the longitudinal axis of the slot and a cable fastened at one end to the spool and the other end of the cable exiting the drive assembly housing and fastened to a handle means for selectively engaging the operator power means, the cable being tangentially fed to the spool through the slot and means for rewinding the spool comprising a spring means for storing rotational energy as the cable is unwound from the spool, the spring means fastened at one end to the axle and connected to the housing at the other end;
- and
- at least two pairs of wheels, one pair connected to the axle of the drive assembly, the other pair of wheels mounted to the platform about a second pivot axis, the first and second pair of wheels pivoting in opposite directions about their respective axes upon tilting of the platform for independent axial displacement, the one pair connected to the drive assembly having clutch means for permitting rotational force by the operator power means to be applied in one direction only,
- whereby, pulling the handle during axial displacement, such as when the platform is tilted, causes the operator power means to exert a constant torque rotational force to the wheels.
5 more elements
Dependencies are inferred from the claim text.