Land vehicles – Ski or skate appliance or attachment – Wind sail for propelling or braking skier or skater
Patent
1983-02-22
1985-07-30
Peters, Jr., Joseph F.
Land vehicles
Ski or skate appliance or attachment
Wind sail for propelling or braking skier or skater
A65C 1100
Patent
active
045317631
ABSTRACT:
An aerodynamic braking device comprises a sail having halves of equal area which are symmetrical about a central vertical axis and are balanced when held in the wind created during a skier's downhill run. The sail has straight outer edges remote from the axis and hems along the edges forming sheaths to receive ski poles or the like. The sheaths leave central areas in which the ski poles can be gripped, and the position of the grips is such that the areas above and below the line of the grips are equal so that the skier can effect counterbalancing of the wind forces above and below the line. Indented pockets or balloon areas enhance the braking effect and provide more effective balance and speed control. In use, the sail is held taut between the skier's outstretched hands and, with the counterbalancing of the forces and ease of manipulation of the sail, easy and effective control of the skier's descent can be accomplished.
REFERENCES:
patent: 1178165 (1916-04-01), Lupton
patent: 2213754 (1940-09-01), Thirring
patent: 3830512 (1974-08-01), Spiegle
patent: 3964697 (1976-06-01), Mays
patent: 4220299 (1980-09-01), Motter
patent: 4311324 (1982-01-01), Fries
"Austrian Ski Sail Permits Long Leaps" Popular Mechanics, Jan., 1953, p.155.
Schwebelauf, article by Thirring, pp. 24-25, 32c, 32b, 88b, and 89.
Edwards Wm. Griffith
McCarthy Joseph G.
Peters Jr. Joseph F.
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