Abstract: A roll-up closure for closing/opening a vertical opening such as a window or door, includes vertically spaced, horizontal slats, the ends of the slats being slidable in vertical guide channels. The lowermost slat carries a catch which is biased outwardly to a position preventing the closure from being raised. The catch can be released to permit raising of the closure, by means of a cable, a manually actuable member, or a mechanically actuable member.

Abstract: A roll-up closure such as a blind or door comprises vertically adjacent, horizontal slats that can be rolled up on a rod. A lowermost slat carries pins that are spring-biased outwardly into locking recesses to resist unintentional lifting of the lowermost slat. The pins are automatically retracted in response to rotation of the rod for raising the closure. An uppermost slat carries a security finger which projects beyond one end thereof and engages the underside of a stop to prevent the uppermost slat from being unintentionally lifted. A cam carried by the rod prevents the pin from moving out from beneath the stop. When the rod is rotated in a closure-raising direction the cam is shifted in a manner permitting the security finger to be disengaged from the stop.

Abstract: The invention relates to a roller blind for windows, doors or the like comprising two curved interlocking profile strips having clamped therebetween flexible hinge straps which extend in a direction vertical to the profile strips and connect same to each other in the vertical direction.