Undertaking
Patent
1978-09-12
1981-02-24
Johnson, Richard J.
Undertaking
272146, A63B 6918
Patent
active
042523125
ABSTRACT:
Indoor gymnastic apparatus allowing the user to execute skiing movements including a base upon which a movable plate is mounted by means of a connecting mechanism.
The connecting mechanism includes a ball bearing to permit the plate to rotate in the horizontal plane and a height adjusting mechanism enabling the plate to rock back and forth.
REFERENCES:
patent: 478166 (1892-07-01), Madsen
patent: 1565484 (1925-12-01), McWhirter
patent: 2455274 (1948-11-01), Scriver
patent: 3021137 (1962-02-01), Palmer
patent: 3807727 (1978-06-01), Kaempfen
Establissement Ariabel
Johnson Richard J.
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