Variable speed balance or teeter board

Details Variable speed balance or teeter board Variable speed balance or teeter board

1982-09-30

1985-01-01

Johnson, Richard J.

Undertaking

A63B 2304

Patent

active

044913184

ABSTRACT:
A variable speed balance or teeter board including a platform, a fulcrum extending downwardly from the bottom of the platform into engagement with a supporting surface. The fulcrum comprising a variety of selectively used members of different shape and height for varying the angularity of the platform tilting action, and damping means comprising a plurality of members of different compressibility selectively or collectively interposed between the platform and the supporting surface for varying the speed of the tilting action of the platform upon application of unevenly distributed weight to the top of the platform, the particular damping member employed being dependent upon the ability of the individual using the balance board.

REFERENCES:
patent: 1566765 (1925-12-01), Natale
patent: 1850927 (1932-03-01), Frederick
patent: 1866906 (1932-07-01), Rager
patent: 2803461 (1957-08-01), Coplin
patent: 3024021 (1962-03-01), Coplin
patent: 3416792 (1968-12-01), Morgan
patent: 3419267 (1968-12-01), Stolle
patent: 3761084 (1973-09-01), Dieckman
patent: 3887179 (1975-06-01), Klepper
patent: 3984100 (1976-10-01), Firster
patent: 4279415 (1981-07-01), Katz

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