Undertaking
Patent
1981-11-12
1984-03-06
Grieb, William H.
Undertaking
272 70, A63B 6918
Patent
active
044349815
ABSTRACT:
An exercising apparatus adapted to simulate cross country skiing, comprising a pair of foot carrying platforms guided and constrained to roll in parallel, opposed reciprocatory motions. Simulated ski poles are guided at their bottom ends for back and forth strokes parallel to the foot platforms, resisted backwardly by elastic restraining cords. According to one aspect of the invention, a standard four legged walking aid may be utilized instead of the ski poles, for use of the apparatus by the infirm.
REFERENCES:
patent: 2900008 (1959-08-01), Seger
patent: 3582069 (1971-06-01), Flick et al.
Grieb William H.
Osburn A. Ray
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