Patent ID: 6550491
Filing Date: 2003-04-22
Classification: A63B,E04H,Y10S

Abstract:
A portable structure, comprising:an expansion section capable of being in a collapsed state and an expanded state and being defined by a plurality of expansion segments, each of said plurality of expansion segments having a first and a second upright member each having an upper portion having an upper end and a lower portion having a lower end; a first articulated arm having a first and a second articulated arm end, pivotally secured to said upper end of said first upright member at said first articulated arm end, and pivotally secured to said upper end of said second upright member at said second articulated arm end; a second articulated arm having a first and a second articulated arm end, pivotally secured to said lower end of said first upright member at said first articulated arm end and pivotally secured to said lower end of said second upright member at said second articulated arm end; said first and said second articulated arms including an elbow between said first articulated arm end and said second articulated arm end such that said first articulated arm end is capable of folding adjacent said second articulated arm end and unfolding in a scissor type motion thereby extending said first upright member away from said second upright member; a netting positioned over said plurality of expansion segments; a plurality of large wheels removably secured on said expansion section while said expansion section is in said collapsed state to define a transportation position; a plurality of smaller wheels removably secured to each of said plurality of expansion segments such that when said large wheels are removed, said expansion section rests upon said smaller wheels to define an expansion position; when said expansion section is in said expanded state said small wheels may be removed to define a structural position; a substantially triangular member pivotally secured to each of said upright members, said substantially triangular member having a substantially vertical side, a substantially horizontal side and a diagonal side forming a substantially right triangle; said substantially vertical side secured to one of said upright members.