Recreational device
US4302006A · kind A · utility
Inventor
Key dates
| Filing date | Jul 15, 1980 |
| Grant date | Nov 24, 1981 |
| Priority date | — |
| Expiry date | Jul 15, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B19/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A recreational device which approximates the feel of downhill skiing without either skis or snow is described in which the device includes a rotatable outer tire and an inner ring which is carried by roller bearing means within the tire. The inner ring is provided with a pivotably mounted platform adapted to provide a foot support for an individual, with the platform in one embodiment including a backwardly projecting extension which serves as a stabilizing tail. An individual utilizing the recreational device is provided with a cross bar secured at waist level to the inner ring via a trapeze arrangement. The size of the ring/tire combination is such that its vertically extending height exceeds that of the largest individual to be accommodated when the individual is standing upright, such that the center of gravity of the ring/tire combination is well above the center of gravity of the individual, thereby creating stability and ease of turning. Back and forth oscillatory movement is controlled by virtue of the stabilizing tail and the entire ring/tire structure is made as light as possible so that a minimum amount of effort is required to overcome gyroscopic restorative forces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.