Land vehicles – Runner vehicle – With occupant propelled means
Patent
1980-09-05
1983-09-20
Spar, Robert J.
Land vehicles
Runner vehicle
With occupant propelled means
441 74, 441 79, B62B 1700
Patent
active
044051395
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE ART
This invention relates to a board which freely slides on the snow. More particularly, this invention concerns an athletic apparatus consisting of a board which comprises a body having two step-decks spaced away from each other lengthwise, the board being used by a player such that he will slide on the snow while balancing his legs on the step-decks.
In order to efficiently slide on the surface of the snow, it is required that the player's weight be uniformly distributed over the surface of the resilient board which is contacted by the snow. For the same reason, a ski includes nose-bends and tail-bends which will contact a flat floor when the ski is placed thereon, the intermediate ski portion between the nose-bend and tail-bend being curved upwardly from the floor to form an arched bend. The nose-bends and tail-bends of the ski are smaller in thickness than the intermediate arched portion. When the weight of a skier is placed on the intermediate portion of the ski, the thin walls of the ski are bent to contact the whole bottom with the surface of the snow so that the skier's weight is uniformly distributed over the entire ski.
It is an object of this invention to provide a board for sliding on the snow which is used such that a player balances his legs on the board at two positions spaced away from each other lengthwise, said board including forward and rearward portions and an intermediate resilient portion which is smaller in thickness than the forward and rearward portions to form an inverted arch bend so that when the player's weight is exerted on the forward and rearward portions of the board it is uniformly distributed over the whole bottom of the board contacted by the snow, thereby obtaining efficient sliding effect on the snow.
Another object of this invention is to provide a board of the above type which includes nose and tail portions having step-decks, each of the step-decks being inclined downwardly toward said intermediate portion so that the bending of the intermediate portion will accommodate itself to the curvature of the surface of the snow and also so that the player can easily balance himself on the board.
Another object is to provide a board of the above type which includes a double tail (so-called "swallow's tail") with fins mounted on the respective tails so that the board will be slid from its balance.
Another object is to provide a board of the above type in which said fins are detachably mounted on the tails of the board.
Another object is to provide a board of the above type which includes side plates provided along the side edges thereof to improve mobility of the board on sliding.
Another object is to provide a board of the above type which includes bindings on the step-decks to anchor the player's feet to the board.
Still another object is to provide a board of the above type which includes spring means located within the board to increase the resiliency in the intermediate portion of the board, to decrease the weight of the board, and to prevent the board from losing its efficiency due to aging.
The above objects, features, and advantages will become more apparent from the embodiments of the invention illustrated in the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a plan view showing a basic structure of a board for sliding on snow which is constructed in accordance with this invention;
FIG. 2 is a side view of the board shown in FIG. 1;
FIG. 3 is a bottom view of the board shown in FIG. 1;
FIG. 4 is a sectional view taken along a line IV--IV of FIG. 1;
FIG. 5 is a sectional view taken along a line V--V of FIG. 1;
FIG. 6 is a perspective view showing a metal fitting for reinforcing the side plate of the board;
FIG. 7 is a plan view of a board constructed according to this invention, in which spring means are located within the board to increase the resiliency in the intermediate portion of the board;
FIG. 8 is an enlarged, sectional view taken along a line VIII--VIII of FIG. 7;
FIG. 9 is a plan view of a board constructed according t
REFERENCES:
patent: 2153939 (1939-04-01), Schaupp
patent: 3378275 (1971-12-01), Carreiro
patent: 3401949 (1968-09-01), Fouillett
patent: 3534972 (1970-10-01), Salerno
patent: 3579681 (1971-05-01), Pope et al.
patent: 4241929 (1980-12-01), Curry
Spar Robert J.
Underwood Donald W.
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