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US 4,304,400 AGranted
Manually powered amusement device
OwnerW. Ted Armstronginventor
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OwnerW. Ted Armstronginventor
Estimating the term…
A rider actuated amusement device comprises a base which at one end includes a transverse crossbar supported on swivel casters. A shaft which is downwardly inclined toward the opposite end of the base is axially secured but rotatably free in a bearing of the base. A circular disc is fixed on the lower end of the shaft, the disc and swivel casters forming a three point support for the device. A transverse handlebar extends through the upper end of the shaft. A mounting member fixedly secured to the shaft between the handlebar and base bearing has a seat on the upper portion close to the shaft and a downwardly dependent portion extending below the shaft and having a foot rest bar for the rider's feet, whereby the rider shifting his weight to either side causes the disc to roll a short distance and the casters to move so that the location of the device with respect to the ground or supporting surface changes.
A manually powered amusement device, comprising, in combination, a base which at one end includes a transverse crossbar which at its opposite ends is supported upon a pair of spaced-apart swivel casters, a downwardly inclined shaft into a direction toward an opposite end of said base being axially secured but rotatably free in a bearing of said base, a circular disc affixed on a projecting lower end of said shaft, said disc and said pair of swivel casters providing a three point support of said device upon any horizontal surface;
Dependencies are inferred from the claim text.