Land vehicles – Ski or skate appliance or attachment – Wind sail for propelling or braking skier or skater
Patent
1987-02-09
1988-07-12
Mitchell, David M.
Land vehicles
Ski or skate appliance or attachment
Wind sail for propelling or braking skier or skater
280816, 280819, 244 4A, A63C 1100
Patent
active
047565551
ABSTRACT:
Apparatus for creating aerodynamic lift to a downhill skier is shown as having a harness adapted to be worn by the skier, a left wing structure is operatively carried by the harness, a right wing structure is operatively carried by the harness, the left wing structure has a first longitudinal axis extending generally transversely of the skier, the right wing structure has a second longitudinal axis extending generally transversely of the skier, the left wing structure is selectively rotatable about the first longitudinal axis, the right wing structure is selectively rotatable about the second longitudinal axis, and the left and right wing structures are respectively rotatable about the first and second axes independently of each other by the skier to respective selected positions.
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patent: 2213754 (1940-09-01), Thirring
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patent: 4204694 (1980-05-01), Freeman
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patent: 4531763 (1985-07-01), Toland
Popular Mechanics Article, "Austrian's Ski-Sail Permits Long Leaps", Jan. 1953, p. 155.
Book, "Der Schwelbelauf", Hans Thirring, Copyright 1939 (Germany), Cover Pages & p. 16.
"Skiing" Magazine; Oct. 1986; p. 19.
"Manbirds", Maralys Wills; Prentice Hall, Inc.; Cover Pages and p. 43; Publication date unknown.
Johnson Brian L.
Mitchell David M.
Romanski Lon H.
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