Undertaking
Patent
1976-05-07
1977-04-19
Shapiro, Paul E.
Undertaking
280 8702W, 297 5, A63C 304
Patent
active
040184390
ABSTRACT:
A training device for ice skaters includes a body enclosing rectilinear frame and pairs of front and rear supp.ort legs depending from the frame. Runners are provided at the lower extremities of the support legs and at least the runners on the rear support legs are rotatable. Springs operatively connect the rotatable runners and their associated support legs such that during the forward movement of the trailing device the rotatable runners are caused to rotate against the bias of their respective springs into an orientation parallel to the direction of movement and when the training device is stationary the rotatable runners are biased by the springs towards an orientation substantially perpendicular to the longitudinal axis of the training device.
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patent: 905314 (1908-12-01), Hoard
patent: 2306780 (1942-12-01), Copson
patent: 3235254 (1966-02-01), Robson
patent: 3350095 (1967-10-01), Clasen
patent: 3352515 (1967-11-01), Albright
Halpern Joel
Shapiro Paul E.
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