1985-10-04
1987-07-07
Grieb, William H.
Undertaking
434253, A63B 6918
Patent
active
046781838
ABSTRACT:
The present invention relates to a ski training device which comprises a generally horizontal support plate, oscillating about a principal axis of symmetry, and two sole plates on which rest the feet of a user, carried pivotally on the support plate respectively on one side and the other of a plane of symmetry passing through the principal pivoting axis of the support plate, about respective auxiliary axes generally perpendicular to the upper surface of the support plate. Alternating pivotings of the sole plates about their respective axes, induced by the user, are accompanied by an alternating rocking of the support plate about the associated principal axis.
REFERENCES:
patent: 2964315 (1960-12-01), Dinning
patent: 3207510 (1965-09-01), Gibson
patent: 3374782 (1968-03-01), Izzo
patent: 3582066 (1971-06-01), Keryluk
patent: 3707283 (1972-12-01), Cormier
patent: 4101136 (1978-07-01), Corll
patent: 4396189 (1983-08-01), Jenkins
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