Outward opening window unit

1. An outward opening window unit comprising:

a fixed frame ( 1 ) having a pair of vertical members or uprights ( 1 a , 1 b ), parallel with each other, and a pair of horizontal members or crosspieces ( 1 c , 1 d ) parallel with each other;

a movable frame ( 2 ) having a pair of vertical members or uprights ( 2 a , 2 b ), parallel with each other, and a pair of horizontal members or crosspieces ( 2 c , 2 d ), parallel with each other, the movable frame ( 2 ) being connected to the fixed frame ( 1 ) by

a pair of hinge arms ( 3 , 4 ) joined to corresponding members of the fixed frame ( 1 ) and of the movable frame ( 2 ) to allow roto-translational movement of the movable frame ( 2 ) from a closed position to an open position towards an outside of a room where the window unit ( 5 ) is installed, and vice versa;

at least one movement arm ( 6 ) configured to push or pull the movable frame ( 2 ) from the closed position to the open position, and vice versa;

an operating unit ( 7 ) mounted on the fixed frame ( 1 ) and connected to the movement arm ( 6 ) in such a way as to move the movable frame ( 2 ) relative to the fixed frame ( 1 ) from the closed position to the open position, and vice versa;

means ( 8 ) for closing or locking/releasing the movable frame ( 2 ) on the fixed frame ( 1 ), said means ( 8 ) being connected to the operating unit ( 7 ) and acting on striker elements ( 9 ) associated with the movable frame ( 2 );

a handle ( 10 ) associated with an outside of the fixed frame ( 1 ) and connected to the operating unit ( 7 ) in such a way as to manually release the movable frame ( 2 ) from the fixed frame ( 1 ) and then move the movable frame ( 2 ) towards the open position, and vice versa;

wherein the fixed frame ( 1 ) has a profile and is provided with a perimeter channel ( 11 ) running along an inside surface of the profile; the perimeter channel ( 11 ) defining a groove provided with at least two undercuts ( 12 ) for slidable coupling of operating rods ( 13 a , 13 b ) which are connected to the operating unit ( 7 );

wherein the fixed frame ( 1 ) comprises at least one corner drive element ( 14 ) for transmission of motion and comprised of two arms ( 14 a , 14 b ) and able to be slidably coupled to the perimeter channel ( 11 ) and able to be positioned at a corner formed by the fixed frame ( 1 ); the corner drive element ( 14 ) being provided with connecting means ( 15 ) configured to connect the two operating rods ( 13 a , 13 b ) which are slidably positioned in the perimeter channel ( 11 ) on two corresponding angled members of the fixed frame ( 1 ) in such a way so as to synchronize movement imparted to the two operating rods ( 13 a , 13 b ) by the operating unit ( 7 ), wherein one of the arms ( 14 a , 14 b ) of the corner drive element ( 14 ) is furnished with guides ( 16 ) (a) which allow sliding along the perimeter channel ( 11 ) and (b) which are configured to position and hold the corner drive element ( 14 ) against the fixed frame ( 1 ), and wherein the corner drive element ( 14 ) has fastening means ( 17 ) for fastening the corner drive element ( 14 ) to the surface of the profile; the fastening means ( 17 ) being located and operative on the arm ( 14 a , 14 b ) which is furnished with the guides ( 16 ).

2. The window unit according to claim 1 , wherein the operating unit ( 7 ) and the handle ( 10 ) are located on a member of the fixed frame ( 1 ) which is free of the hinge arms ( 3 , 4 ) and wherein the at least one corner drive element ( 14 ) connecting the operating rods ( 13 a , 13 b ) is associated with a corner of the fixed frame ( 1 ) which is formed by a member engaged by the operating unit ( 7 ) and a member engaged by one of the hinge arms ( 3 , 4 ).

3. The window unit according to claim 1 , wherein one of the arms ( 14 a , 14 b ) of the corner drive element ( 14 ) is configured to rest on the profile of the fixed frame ( 1 ).

4. The window unit according to claim 1 , wherein the connecting means ( 15 ) are located inside the corner drive element ( 14 ) and are configured to protrude at least partially into the perimeter channel ( 11 ).

5. The window unit according to claim 1 , wherein the fixed frame ( 1 ) has a slot ( 18 ) formed on at least one side of the perimeter channel ( 11 ) and configured to provide access from the front at least for the arm ( 14 a , 14 b ) of the corner drive element ( 14 ) which is furnished with the guides ( 16 ).

6. The window unit according to claim 1 , wherein the fixed frame ( 1 ) has a slot ( 18 ) formed on a side of the perimeter channel ( 11 ) and configured to provide access from the front for the arm ( 14 a , 14 b ) of the corner drive element ( 14 ) which is furnished with the guides ( 16 ) and to allow the operating rods ( 13 a , 13 b ) to be inserted.

7. The window unit according to claim 1 , wherein the perimeter channel ( 11 ) comprises a central opening ( 19 ) delimited by two mutually opposed flanges ( 20 ) made on the inside surface of the profile; the profile having an internal tubular chamber ( 21 ) which accommodates the remaining surface of the perimeter channel ( 11 ) and which comprises two parallel tracks ( 22 ) mutually opposed to the corresponding flanges ( 20 ) in such a way as to define sliding supports for the guides ( 16 ) and for the operating rods ( 13 a , 13 b ).

8. An outward opening window unit comprising:

a fixed frame ( 1 ) having a pair of vertical members or uprights ( 1 a , 1 b ), parallel with each other, and a pair of horizontal members or crosspieces ( 1 c , 1 d ) parallel with each other;

a movable frame ( 2 ) having a pair of vertical members or uprights ( 2 a , 2 b ), parallel with each other, and a pair of horizontal members or crosspieces ( 2 c , 2 d ), parallel with each other, the movable frame ( 2 ) being connected to the fixed frame ( 1 ) by

a pair of hinge arms ( 3 , 4 ) joined to corresponding members of the fixed frame ( 1 ) and of the movable frame ( 2 ) to allow roto-translational movement of the movable frame ( 2 ) from a closed position to an open position towards an outside of a room where the window unit ( 5 ) is installed, and vice versa;

at least one movement arm ( 6 ) configured to push or pull the movable frame ( 2 ) from the closed position to the open position, and vice versa;

an operating unit ( 7 ) mounted on the fixed frame ( 1 ) and connected to the movement arm ( 6 ) in such a way as to move the movable frame ( 2 ) relative to the fixed frame ( 1 ) from the closed position to the open position, and vice versa;

means ( 8 ) for closing or locking/releasing the movable frame ( 2 ) on the fixed frame ( 1 ), said means ( 8 ) being connected to the operating unit ( 7 ) and acting on striker elements ( 9 ) associated with the movable frame ( 2 );

a handle ( 10 ) associated with an outside of the fixed frame ( 1 ) and connected to the operating unit ( 7 ) in such a way as to manually release the movable frame ( 2 ) from the fixed frame ( 1 ) and then move the movable frame ( 2 ) towards the open position, and vice versa;

wherein the fixed frame ( 1 ) has a profile and is provided with a perimeter channel ( 11 ) running along an inside surface of the profile; the perimeter channel ( 11 ) defining a groove provided with at least two undercuts ( 12 ) for slidable coupling of operating rods ( 13 a , 13 b ) which are connected to the operating unit ( 7 );

wherein the fixed frame ( 1 ) comprises at least one corner drive element ( 14 ) for transmission of motion and comprised of two arms ( 14 a , 14 b ) and able to be slidably coupled to the perimeter channel ( 11 ) and able to be positioned at a corner formed by the fixed frame ( 1 ); the corner drive element ( 14 ) being provided with connecting means ( 15 ) configured to connect the two operating rods ( 13 a , 13 b ) which are slidably positioned in the perimeter channel ( 11 ) on two corresponding angled members of the fixed frame ( 1 ) in such a way so as to synchronize movement imparted to the two operating rods ( 13 a , 13 b ) by the operating unit ( 7 ), wherein the perimeter channel ( 11 ) comprises a central opening ( 19 ) delimited by two mutually opposed flanges ( 20 ) made on the inside surface of the profile; the profile having an internal tubular chamber ( 21 ) which accommodates the remaining surface of the perimeter channel ( 11 ) and which comprises two parallel tracks ( 22 ) mutually opposed to the corresponding flanges ( 20 ) in such a way as to define sliding supports for the guides ( 16 ) and for the operating rods ( 13 a , 13 b ).