초록 ▼

A skate sail, to be held by hand, for propelling an individual on a mobile supportive device, such as skates or a skate board, has a central vertical brace, and a horizontal cross brace whose center is attached to the upper portion of the central vertical brace. Identical spars extend from the base

A skate sail, to be held by hand, for propelling an individual on a mobile supportive device, such as skates or a skate board, has a central vertical brace, and a horizontal cross brace whose center is attached to the upper portion of the central vertical brace. Identical spars extend from the base of the central vertical brace past the ends of the horizontal cross brace to which they are secured. The edges of the cloth of the skate sail are secured to, and held tightly by the identical spars. The central, vertical brace may be secured to the central axis of the sail, and the ends of the horizontal cross brace can push the spars apart to keep the sail taut. The individual holds the rig at the intersection of the vertical and horizontal braces, which should be near the center of effort of the sail, in a suitable direction to cause any available wind to propel him on his skates or skate board in any of the possible desired direction.

대표청구항 ▼

In combination, a skateboard having a substantially planar upper surface, a lower surface with wheels attached thereto, and a hand-held sail attached to said upper surface, said sail comprising: a central vertical brace, a pair of identical spars, a lower end of each spar being connected to said cen

In combination, a skateboard having a substantially planar upper surface, a lower surface with wheels attached thereto, and a hand-held sail attached to said upper surface, said sail comprising: a central vertical brace, a pair of identical spars, a lower end of each spar being connected to said central brace at a pivotal connection located adjacent the lower portion of said central brace, said central brace being of substantially the same length as said spars, a horizontal cross brace releasably secured to said central brace, said cross brace having end portions releasably secured to respective ones of said spars at a location above the midpoint of each spar, wherein said spars extend upwardly and outwardly from opposite sides of said central brace and wherein the horizontal distance between the upper end of each said spar and said central brace is substantially equal to the vertical distance between the upper end of each said spar and a horizontal plane intersecting said pivotal connection, a single piece of sail cloth secured to said spars and extending therebetween, said sail cloth having an upper edge configuration which extends to a location proximate the upper ends of each of said central brace and said spars, said sail cloth being tightly drawn between said spars when said cross brace is secured to said central brace and said spars, battens fitted within said sail and extending upwardly and outwardly between said central brace and said spars, and a socket secured to the upper surface of the skateboard for rotatably receiving and supporting the lower portion of said central brace about an axis extending perpendicular to the upper surface of the skateboard.