Locking mechanism for a roll-up closure

Details Locking mechanism for a roll-up closure Locking mechanism for a roll-up closure

1994-10-07

1995-12-12

Johnson, Blair M.

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

Roll type

160291, E06B 908

Patent

active

054741173

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.

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