Patent ID: 7152653

Claim:
A roll-up curtain comprising: a first curtain section including a first fixed upper rod attached to a support structure and a second lower rod; a second curtain section including a third fixed upper rod attached to the support structure and a fourth lower rod, wherein said second curtain section is aligned with and laterally spaced from said first curtain section; a rotary drive including an electric motor disposed intermediate said first and second curtain sections and coupled to adjacent ends of said second and fourth lower rods for rotationally displacing said second and fourth lower rods in a first direction for rolling up said first curtain section on said second lower rod and said second curtain section on said fourth lower rod in opening said first and second curtain sections, and for rotationally displacing said second and fourth lower rods in a second opposed direction for unrolling said first curtain section from said second lower rod and said second curtain section from said fourth lower rod in closing said first and second curtain sections; and a vertical guide engaging said rotary drive for directing said rotary drive in vertical travel upward during rolling up of said curtain sections and downward during unrolling of said curtain sections and maintaining said rotary drive a fixed distance from and in a fixed orientation relative to said first and second curtain sections during rolling up and unrolling of said curtain sections.