Patent ID: 7438112

Claim:
A roll-up barrier comprising: a base having a top surface; an outer edge; and a connecting tube formed on and protruding up from the top surface of the base; a drive shaft having; a bottom end mounted securely in the connecting tube of the base; and a top end; an end cap mounted securely at the top end of the drive shaft and having a bottom surface; an outer edge; a connecting tube formed coaxially on and protruding down from the bottom surface of the end cap and securely holding the top end of the drive shaft; and an arresting mechanism mounted in the end cap and having a button recess formed in the end cap and having an open top and a bottom; a control button mounted rotatably in the button recess and having a bottom; and multiple control serrations formed circularly on the bottom of the control button; a spring mounted under the bottom of the control button to press the control button up slightly; a limit slot being curved, formed through the bottom of the button recess and aligning with the control serrations; and an arrestor being curved, mounted under the bottom of the end cap, being capable of moving along a longitudinal direction and having two ends; and a bottom having a bevel section formed on the bottom of the arrestor; and a one-way toothed section formed on the bottom of the arrestor between the bevel section and one of the ends of the arrestor; a rolling assembly mounted rotatably between the base and the end cap and having a rolling tube mounted rotatably around the drive shaft and having an inner surface; an outer surface; a bottom end mounted rotatably on the base around the connecting tube; and a top end; and a rolling bushing mounted securely at the top end of the rolling tube and having a top; a bottom; an outer wall; a connecting hole formed coaxially through the rolling bushing and rotatably mounted around the connecting tube of the end cap; an actuator mounted rotatably on the top of the rolling bushing and having a top surface; an outer edge; a central hole formed coaxially through the actuator and mounted rotatably around the connecting tube of the end cap; a control tooth formed on the top surface of the actuator, corresponding to the control serrations and protruding through the limit slot to selectively engage the control serrations; and an actuating lug formed on and protruding radially from the outer edge of the actuator and having a bevel top corresponding to the bevel section of the arrestor and selectively engaging the bevel section to lift up the arrestor; and multiple one-way arresting teeth formed on the top of the rolling bushing around the actuator and corresponding to and selectively engaging the one-way toothed section; a resilient element mounted in the rolling tube to provide a rotating reposition force to roll the rolling tube after the rolling tube is rotated; and a flexible barrier attached to and mounted retractably around the rolling tube and having a proximal edge attached to the rolling tube; a distal edge; a bottom edge; and a top edge.