Patent ID: 11866966
Assignee: GIESSE S.P.A.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A device for constraining the opening of doors or windows comprising:
a fixed frame,
a movable frame or leaf,
a control handle connected to the movable frame or leaf;
the control handle being connected to devices for locking/unlocking the movable frame or leaf slidably positioned along a perimeter profile of the movable frame or leaf to allow, by rotating the control handle, at least a closed configuration of the movable frame or leaf and a free opening configuration of the movable frame or leaf,
a constraining device comprising:
a guide body connected to the perimeter profile of the movable frame or leaf and having a slot;
an operating arm articulated, at a first end, to the fixed frame, and including a second end slidably connectable, by a pin, inside the slot of the guide body to allow a sliding stroke of the pin along the slot to define a limited opening configuration with a limited angle of the movable frame or leaf;
the guide body including two lateral openings facing each other made on the guide body walls defining the slot to allow a passage, at least through one of the two lateral openings, of the pin of the arm housed in the slot when the movable frame or leaf is in the free opening configuration;
a latch articulated to a base of the guide body and movable between a first, lowered non-operating position and a second, raised operating position for locking the pin of the arm when the pin is positioned at an end of the slot of the guide body in the limited opening configuration with the limited angle of the movable frame or leaf;
an operating rod slidably inserted along the guide body and having outer ends, outside the guide body, configured to connect, in use, with the devices for locking/unlocking the movable frame or leaf; the operating rod having two protruding rod walls configured to temporarily close, in use, the two lateral openings of the slot at least at the passage from the closed configuration to the limited opening configuration with the limited angle of the movable frame or leaf.