EP 0127749 B1 19890125 - SECURITY DEVICE AGAINST LIFTING AND LAMELLAR BLIND COMPRISING SUCH A DEVICE
Title (en)
SECURITY DEVICE AGAINST LIFTING AND LAMELLAR BLIND COMPRISING SUCH A DEVICE
Publication
Application
Priority
CH 270183 A 19830518
Abstract (en)
[origin: US4649982A] A venetian blind is disclosed having a drive transmission, a lift safety, and an anti-twist safety. The slats are arranged in a stationary frame, and a movable carriage is coupled to at least one of the slats. The carriage moves along a part of the stationary frame for raising and lowering the slats. The lift safety includes a lever or locking pawl mounted on the carriage and positioned to be engaged by a projection on a lift chain or strap. The lever is mounted on the carriage so that the distance between the point of mounting and a point of contact between the lever and the stationary frame decreases as the lever becomes perpendicular to the raising direction. As a result, the lever locks the carriage in position at unauthorized lifting and stops are positioned on the carriage for holding the lever in the locking position. In addition, when the lever is pulled upward from the locking position, it pivots quickly around one of the stops and away from the stationary frame.
IPC 1-7
IPC 8 full level
E06B 9/02 (2006.01); E06B 9/302 (2006.01); E06B 9/32 (2006.01); E06B 9/325 (2006.01); E06B 9/86 (2006.01); E06B 9/80 (2006.01)
CPC (source: EP US)
E06B 9/302 (2013.01 - EP US); E06B 9/32 (2013.01 - EP US); E06B 9/325 (2013.01 - EP US); E06B 9/86 (2013.01 - EP US); E06B 2009/805 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0127749 A2 19841212; EP 0127749 A3 19850717; EP 0127749 B1 19890125; AT E40440 T1 19890215; DE 3476435 D1 19890302; JP H0377357 B2 19911210; JP S59217886 A 19841208; US 4649982 A 19870317
DOCDB simple family (application)
EP 84103947 A 19840409; AT 84103947 T 19840409; DE 3476435 T 19840409; JP 9891984 A 19840518; US 61024884 A 19840514