Patent ID: 9637922
Date: 2017-05-02
CPC Classifications: A63J,E04B,E04C,E04H,F16B

Claim:
1. A truss base unit for cooperating with at least three separate and removable chord members to form an elongated truss when said at least three separate and removable chord members are installed, and said truss base unit collapsible when said at least three chord members are removed, said collapsible truss base unit comprising: first and second truss end caps, each of said first and second truss end caps comprising a primary portion and a secondary portion, said primary portion having first and second primary connections rigidly spaced a first selected distance apart adapted to secure a first and a second removable chord member, said secondary portion having at least one secondary connection adapted to secure at least a third removable chord member, said primary portion and said secondary portion rigidly connected together at a fixed distance apart; a multiplicity of primary sliding units, each of said primary sliding units having at least first and second sliding parallel sleeve, each defining a first selected cross-section and said parallel sleeves rigidly connected together and rigidly spaced apart said first selected distance; a multiplicity of secondary sliding units, each of said secondary sliding units having at least one sliding sleeve defining a second selected cross-section, each at least one sliding sleeve being parallel to said first and second sliding parallel sleeves; and a multiplicity of elongated connecting link units of a selected length, first ones of said connecting link units having a first end pivotally connected to each of said first and second truss end caps adjacent said first and second primary connections, and a second end pivotally connected to one of said secondary sliding units, and each one of the remaining elongated connecting link units pivotally connected between said primary sliding units and said secondary sliding units to form said collapsible truss base unit.