Balancing board

Details Balancing board Balancing board

1983-07-07

1985-03-19

Johnson, Richard J.

Undertaking

280 8704R, A63B 2304

Patent

active

045054770

ABSTRACT:
A balancing board includes a platform to which a pair of parallel tracks are mounted to the lower surface. The tracks each include two parallel rods mounted so that they rotate freely about their axes. A set of wheels are mounted to a common shaft. The wheels are separated so that they roll along the tracks and between the pairs of rods. The wheels are biased toward the center of the tracks by springs or by ramps, or both. Two biasing springs, positioned on either side of the shaft and connected between the shaft and the platform, can be used. Biasing ramps at the far ends of the tracks can be used to bias or redirect the wheels toward the center of the tracks. A depression at the center of each track acts as a detent to tend to center the wheel assembly during use.

REFERENCES:
patent: 2764411 (1956-09-01), Washburn
patent: 2829891 (1958-04-01), Ludwig
patent: 2829892 (1958-04-01), Ludwig
patent: 3023022 (1962-02-01), Boyden
patent: 3630540 (1971-12-01), Smith

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