초록 ▼

A front support member is pivotally affixed to the undersurface of a body-supporting board close to the front and equidistant from the sides thereof. A pair of rear support members are affixed to the undersurface of the board in spaced parallel relation close to the rear and equidistant from the sid

A front support member is pivotally affixed to the undersurface of a body-supporting board close to the front and equidistant from the sides thereof. A pair of rear support members are affixed to the undersurface of the board in spaced parallel relation close to the rear and equidistant from the sides thereof. Each of the support members comprises a block having a bore formed therethrough spaced from and parallel to the undersurface of the board. A front ski member and a pair of rear ski members have spaced ears with coaxial bores formed therethrough. The ears are spaced a distance from each other sufficient to accommodate the blocks of the support members therebetween with the bores of the block coaxial with the bores of the ears. Bolts pass through the bearings in the bores of the ears and the bores of the blocks to removably affix the ski members to the support members in a manner whereby the ski members are rotatable in planes perpendicular to the undersurface of the board.

대표청구항 ▼

A convertible sled for use on surfaces with high coefficients of friction as well as surfaces with low coefficients of friction, said sled comprising a body-supporting board having an oversurface for supporting the body of a user and an undersurface, said board having sides, a front, and a spaced op

A convertible sled for use on surfaces with high coefficients of friction as well as surfaces with low coefficients of friction, said sled comprising a body-supporting board having an oversurface for supporting the body of a user and an undersurface, said board having sides, a front, and a spaced opposite rear; a plate affixed to the undersurface of the board close to the front and equidistant from the sides thereof; a front support member; a pivot pin pivotally coupling the front support member to the plate; a bearing interposed between the adjacent surfaces of said front support member and said plate to provide smooth rotation of said front support member about the pivot pin; a pair of rear support members affixed to the undersurface of the board close to the rear and equidistant from the sides thereof, the rear support members being in spaced parallel relation, each of the front and rear support members comprising a block having a bore formed therethrough spaced from and parallel to the undersurface of the board and extending perpendicularly to the sides of said board in said rear support members; a front ski member; a pair of rear ski members, each of the ski members having an oversurface and a coupling member extending therefrom with a pair of spaced ears having coaxial bores formed therethrough and spaced a distance from each other sufficient to accommodate the blocks of said support members therebetween, the bores of the blocks being coaxial with the bores of the ears; annular bearing members in the bores of said ears; and bolts passing through the bearing members of the ears and the bores of said blocks to removably affix said ski members to said support members in a manner whereby said ski members are rotatable in planes perpendicular to the undersurface of said board.