Patent ID: 7494111
Filing Date: 2009-02-24
Classification: E01F,Y10S

Abstract:
1. A barrier comprising: a first side being expandable and contractible in horizontal length and having a top and a bottom, a second side being expandable and contractible in horizontal length and having a top and a bottom, wherein said top of said second side is pivotally connected to said top of said first side to allow expansion and contraction in width to form a base of said barrier, said first side further comprising a first series of elongated members comprising a group of frontward, left inclining elongated members, and a group of frontward right inclining elongated members, such that each said frontward, left inclining member crosses a frontward right inclining elongated members near the midpoints of the frontward elongated members, and said frontward elongated members are pivotally connected at the midpoints and adjacent top and bottom ends of adjacent left inclining and right inclining frontward enlongated members, wherein at least one of said elongated members of said first series of elongated members is connected to a first end pole, and said second side further comprising a series of elongated members comprising a group of rearward, left inclining elongated members, and a group of rearward right inclining elongated members, such that each said rearward, left inclining elongated member crosses a rearward right inclining elongated member near the midpoints of the rearward elongated members, and said rearward elongated members are pivotally connected at the midpoints and adjacent top and bottom ends of adjacent left inclining and right inclining rearward enlongated members, and wherein at least one of said of elongated members of said second series of elongated members is connected to a second end pole, and having a means of adjusting the length of at least one member to minimize strain.