System for unlocking/locking and opening/closing windows

1. A lever mechanism system for a vent sash, the system comprising:

a plurality of push arms, each of the plurality of push arms comprising a first push arm end and a second push arm end, and each of the plurality of push arms pivotably coupled to the vent sash at the second push arm end;

a plurality of drive arms, each of the plurality of drive arms comprising a first drive arm end and a second drive arm end, each of the plurality of drive arms pivotably coupled at the second drive arm end to the first push arm end of a corresponding one of the plurality of push arms;

a plurality of first gears, each of the plurality of first gears coupled to the first drive arm end of a corresponding one of the plurality of drive arms;

a locking gear slide operable to interface with a locking mechanism of the vent sash; and

a handle operable to:

radially rotate approximately one hundred eighty degrees in a first direction in a single plane to:

pivot the locking gear slide to move the locking mechanism of the vent sash to an unlocked position, and

rotate the plurality of first gears to extend the plurality of drive arms and the plurality of push arms such that the vent sash is pushed to an open position, and

radially rotate approximately one hundred eighty degrees in a second direction in the single plane to:

rotate the plurality of first gears to retract the plurality of drive arms and the plurality of push arms such that the vent sash is pulled to a closed position, and

pivot the locking gear slide to move the locking mechanism of the vent sash to a locked position.

2. The lever mechanism system according to claim 1 , comprising a frame configured to mount to a window frame and house at least a portion of the lever mechanism system.

3. The lever mechanism system according to claim 1 , wherein the second direction is opposite the first direction.

4. The lever mechanism system according to claim 1 , wherein the locking gear slide is pivoted to move the locking mechanism of the vent sash to the unlocked position during a first approximately forty-five degrees of the approximately one hundred eighty degrees of rotation in the first direction.

5. The lever mechanism system according to claim 4 , wherein the plurality of first gears is rotated to extend the plurality of drive arms and the plurality of push arms such that the vent sash is pushed to the open position during a second approximately one hundred thirty-five degrees after the first approximately forty-five degrees of the approximately one hundred eighty degrees of rotation in the first direction.

6. The lever mechanism system according to claim 1 , wherein the plurality of first gears is rotated to retract the plurality of drive arms and the plurality of push arms such that the vent sash is pulled to the closed position during a first approximately one hundred thirty-five degrees of the approximately one hundred eighty degrees of rotation in the second direction.

7. The lever mechanism system according to claim 6 , wherein the locking gear slide is pivoted to move the locking mechanism of the vent sash to the locked position during a second approximately forty-five degrees after the first approximately one hundred thirty-five degrees of the approximately one hundred eighty degrees of rotation in the second direction.

8. The lever mechanism system according to claim 1 , wherein the locking mechanism comprises a locking spindle that is pivotable by a protrusion of the locking gear slide.

9. The lever mechanism system according to claim 8 , comprising a locking hook operable to engage the locking spindle to seal the vent sash in the closed position.

10. The lever mechanism system according to claim 9 , comprising a locking arm operable to engage and move the locking hook to a closed position where the locking hook engages the locking spindle when the handle is rotated in the second direction.

11. The lever mechanism system according to claim 10 , comprising a spring operable to bias the locking hook towards an open position causing the locking arm to disengage the locking hook when the handle is rotated in the first direction.

12. The lever mechanism system according to claim 1 , wherein:

the open position is a fully open position, and

the closed position is a fully closed position.

13. The lever mechanism system according to claim 1 , comprising a plurality of hinged pins, wherein each of the plurality of hinged pins is operable to pivotably couple each of the plurality of drive arms at the second drive arm end to the first push arm end of the corresponding one of the plurality of push arms, each of the plurality of hinged pins allowing each of the plurality of push arms to pivot both parallel and perpendicular to an axis of each of the plurality of hinged pins.

14. The lever mechanism system according to claim 1 , comprising a quick release lock operable to detachably couple one of the plurality of drive arms at the second drive arm end to the first push arm end of the corresponding one of the plurality of push arms.

15. The lever mechanism system according to claim 1 , comprising a plurality of hinges, wherein each of the plurality of hinges is operable to pivotably couple each of the plurality of push arms to the vent sash at the second push arm end of each of the plurality of push arms.

16. The lever mechanism system according to claim 1 , wherein at least one of the plurality of first gears comprises a pin releasably coupling with the locking gear slide to prevent rotation of the at least one of the plurality of first gears during a first approximately forty-five degrees of the approximately one hundred eighty degrees of rotation of the handle in the first direction and during a last approximately forty-five degrees of the approximately one hundred eighty degrees of rotation of the handle in the second direction.

17. The lever mechanism system according to claim 1 , comprising a shoulder screw coupled to the handle at a pivot point of the handle and operable to rotate with rotation of the handle.

18. The lever mechanism system according to claim 17 , further comprising a drive gear, a cam gear, and a locking arm, wherein the drive gear, the cam gear, and the locking arm attach to and rotate with the shoulder screw.

19. The lever mechanism system according to claim 18 , wherein the drive gear is operable to mate with and rotate at least one of the plurality of first gears during a last approximately one hundred thirty-five degrees of the approximately one hundred eighty degrees of rotation of the handle in the first direction and during a first approximately one hundred thirty-five degrees of the approximately one hundred eighty degrees of rotation of the handle in the second direction.

20. The lever mechanism system according to claim 18 , wherein the cam gear is operable to mate with and pivot the locking gear slide during a first approximately forty-five degrees of the approximately one hundred eighty degrees of rotation of the handle in the first direction and during a last approximately forty-five degrees of the approximately one hundred eighty degrees of rotation of the handle in the second direction.

21. The lever mechanism system according to claim 1 , comprising a flip cover pivotably mounted to the vent sash, wherein the flip cover is pivotable between a flip cover open position to provide access to the locking mechanism when the vent sash is in the closed position and a flip cover closed position when the vent sash is in the open position.

22. The lever mechanism system according to claim 21 , wherein the flip cover is pivoted by one or both of:

a torsion spring, and

a key and a key shaft.