초록 ▼

A reinforcement member is provided for an extendible scissors truss such as may be utilized in a collapsible canopy structure wherein the extendible scissors truss has members pivotally connected to form truss cells. The reinforcement member has first and second end portions joined by a linking port

A reinforcement member is provided for an extendible scissors truss such as may be utilized in a collapsible canopy structure wherein the extendible scissors truss has members pivotally connected to form truss cells. The reinforcement member has first and second end portions joined by a linking portion to form a Z-like configuration. The first and second end portions of the reinforcement member are each attached, at an end point, to one of a pair of parallel members of a cell, and lie laterally adjacent the truss members when the extendible scissors truss is in an extended position. The cell is thereby reinforced against moments resulting from side forces applied to the truss by torsion and bending stress developed in the linking portion of the reinforcement member.

대표청구항 ▼

A reinforcement member for an extendible scissors truss, the truss having a plurality of truss members pivotally attached to one another to define a truss cell with a first pair of opposing corners and a second pair of opposing corners said reinforcement member comprising: first and second end porti

A reinforcement member for an extendible scissors truss, the truss having a plurality of truss members pivotally attached to one another to define a truss cell with a first pair of opposing corners and a second pair of opposing corners said reinforcement member comprising: first and second end portions, respectively; having a first and second distal end, a first means for attaching said first end portion laterally adjacent to a first truss member; a second means for attaching said second end portion laterally adjacent to a second truss member; and a linking portion extending between said first and second end portions with a first end of said linking portion rigidly connected to said first end portion at a first connection point spaced from said first distal end and a second end of said linking portion rigidly connected to said second end portion at a second connection point spaced from said second distal end in such a manner that, when said extendible scissors truss is in an extended configuration, said first connection point laterally abuts said first truss member and said second connection point laterally abuts said second truss member whereby said first and second end portions define first and second lever members which can exert a moment couple upon the first and second truss member.