Knock-down quarter pipe for skateboarders, bikers and in-line skaters

A knock-down quarter-pipe for bikers, skateboarders and in-line skaters comprising

• a base;
• a plurality of legs extending up from the base, said legs having lower ends lying in a common plane;
• a deck supported by the legs at a selected elevation above the base, said deck having front and rear edges and a surface extending between said edges that are substantially parallel to said plane, and
• a ramp connected to the front edge of the deck and extending from said front edge down to said plane, said ramp having a lower leading edge that is located in said plane and spaced in front of the base, said ramp including a hollow entry section having a lower end which defines said lower leading edge and an upper end which defines a shelf and an inlet at said shelf, at least one arcuate ramp section which extends from the front edge of the deck down to said shelf, a securement for securing the at least one ramp section to the shelf said securement being a locking can which both releasably connects the at least one ramp section to the shelf and closes said inlet.

A knock-down quarter pipe comprising

• a horizontal base;
• pairs of front and rear legs extending up from the base and for placement on a support surface below the base;
• a deck supported by the legs at a selected elevation above the base, said deck having an upper surface and a front edge defining a recess thereat which extends above said pair of front legs;
• a rigid grind rail seated in said recess so that the rail is substantially level with said upper surface of the deck, said rail having a pair of stubs extending down through said deck and being fastened to said pair of front legs;
• a ramp having first and second ends and an upper surface extending between said ends, and
• connections pivotally connecting the first end of the ramp adjacent and parallel to the front edge of the deck so that the second end of the ramp is spaced in front of the base and rests on the support surface in a self-leveling fashion.

A knock-down quarter-pipe comprising

• a base;
• a plurality of legs extending up from the base and for placement on a support surface;
• a deck supported by the legs at a selected elevation above the base, said deck having an upper surface and a front edge;
• a ramp having first and second ends and an upper surface extending between said ends, and
• connecting means for pivotally connecting the first end of the ramp to the front edge of the deck so that the second end of the ramp is spaced in front of the base and may rest on the support surface in a self-leveling fashion, said connecting means including at least one notch in the front edge of the deck, a rigid cylindrical rail mounted to the front edge of deck so as to bridge said notch, and a curved tongue extending from the first end of the ramp, the curvature of the tongue corresponding to that of the rail, said tongue being dimensioned so that when the second end of the ramp is elevated with respect to the base, the tongue may be inserted into said notch from below behind the rail so that the rail functions as a pivot for the tongue and when the second end of the ramp is swung down to the level of the base, the tongue becomes pivotally locked behind the rail.

A knock-down quarter-pipe comprising

• a hollow base including an inlet for filling the base with a fluid medium;
• a closure member for closing said inlet;
• a plurality of legs extending up from the base and for placement on a support surface;
• a deck supported by the legs at a selected elevation above the base, said deck having an upper surface and a front edge;
• a ramp having first and second ends and an upper surface extending between said ends, said ramp including an entry section having a lower end which defines the second end of the ramp and an upper end which defines a shelf, at least one arcuate ramp section which extends from the front edge of the deck down to said shelf, and means for securing the at least one ramp section to the shelf, and connections for pivotally connecting the first end of the ramp to the front edge of the deck so that the second end of the ramp is spaced in from of the base and may rest on the support surface in a self-leveling fashion.

A quarter pipe for bikers, skateboarders and skaters comprising

• a deck having an upper surface and a front edge;
• a plurality of legs, said legs having corresponding upper ends connected to the deck and corresponding lower ends lying in a common plane below the deck;
• at least one notch in the front edge of the deck;
• a rigid rail mounted to the front edge of the deck so as to bridge said notch;
• a ramp having first and second ends and an upper surface extending between said ends, and
• a curved tongue extending from the first end of the ramp, said tongue being shaped and dimensioned so that when the second end of the ramp is elevated above said base, the tongue may be inserted from below into the notch behind the rail whereby when the second end of the ramp is moved down to said plane, the tongue becomes locked behind the rail.

A knock-down quarter-pipe for bikers, skateboarders and in-line skaters comprising

• a platform assembly including
• a pair of spaced-apart upstanding tubular front legs,
• a pair of spaced-apart upstanding tubular rear legs, each of said front and rear legs having a lower end for placement on a support surface and an upper end, the upper ends of the pairs of legs together defining a generally horizontal plane,
• a deck positioned on the upper ends of said pairs of front and rear legs, said deck having an upper surface and a front edge including a trough that extends between the pair of front legs,
• a rigid, generally cylindrical grind rail positioned in said trough so that said rail is substantially level with said upper surface, said rail having a pair of stubs which extend down through said deck into the upper ends of said pair of front legs, and
• securing devices for securing the pair of stubs in said pair of front legs, and
• a ramp assembly including
• a ramp having an upper end, a lower end and a top surface extending between said upper and lower ends, and
• a connection connecting said upper end to the platform assembly so that said top surface is generally tangent to said rail and said lower end is spaced in front of said front legs below said deck.