Patent ID: 6860310
Filing Date: 2005-03-01
Classification: E06B

Abstract:
1. A roll-up curtain comprising: a first curtain section including a first fixed upper rod attached to a support structure and a third lower rod; a second curtain section in vertical alignment with said first curtain section and including a second fixed upper rod attached to the support structure and a fourth lower rod, wherein said second curtain section is disposed below said first curtain section; first rotary drive means coupled to said third lower rod for rotationally displacing said third lower rod in a first direction for rolling up said first curtain section onto said third lower rod, wherein said third lower rod is displaced upward toward said first fixed upper rod in opening said first curtain section, or for rotationally displacing said third lower rod in a second opposed direction for unrolling said first curtain section from said third lower rod in closing said first curtain section; second rotary drive means disposed below said first rotary drive means and coupled to said fourth lower rod for rotationally displacing said fourth lower rod in a first direction for rolling up said second curtain section onto said fourth lower rod, wherein said fourth lower rod is displaced upward toward said second fixed upper rod in opening said second curtain section, or for rotationally displacing said fourth lower rod in a second opposed direction for unrolling said second curtain section from said fourth lower rod in closing said second curtain section; and linkage means for connecting said first and second rotary drive means wherein said first and second rotary drive means move upward in unison when said third and fourth lower rods are displaced upward in opening said first and second curtain sections, and wherein said first and second rotary drive means move downward in unison when said third and fourth lower rods are displaced downward in closing said first and second curtain sections.