Systems and methods for unlocking/locking and opening/closing windows

A lever mechanism system comprising:

• a base attaching directly to at least one of a vent stop and a window frame;
• and
• a lever comprising:
• a push arm comprising a first push arm end and a second push arm end, the first push arm end comprising a pivotable sash attachment pivotably attaching to a vent sash via a locking mechanism interface located at the vent sash, the second push arm end pivotably attached to a lever arm at a lever arm pivot;
• the lever arm comprising a first lever arm end and a second lever arm end, the lever arm pivot being between the first lever arm end and the second lever arm end, the first lever arm end pivotably attached to a fulcrum at a fulcrum connection, the second lever arm end at least one of:
• attaching to a lever handle, and
• integrating with the lever handle;
• and
• the fulcrum connection rotatably or slidably attaching the lever directly to the base.

A method for unlocking, opening, closing and locking a vent sash, the method comprising:

• pivoting a lever substantially ninety degrees in a first direction to move a locking mechanism interface located at the vent sash to an unlocked position, wherein the locking mechanism interface engages a locking mechanism at the vent sash to unlock the vent sash;
• pushing the lever forward in a second direction to push the locking mechanism interface and thereby the vent sash to a fully open position;
• pulling the lever backward in a third direction to pull the locking mechanism interface and thereby the vent sash to a fully closed position;
• and
• pivoting the lever substantially ninety degrees in a fourth direction to move the locking mechanism interface to a locked position, wherein the locking mechanism interface engages the locking mechanism at the vent sash to lock the vent sash,
• wherein the lever comprises a first end and a second end, the lever having one or more of an integrated or attached lever handle at the first end, the lever rotatably or slidably attached directly to the base between the first end and the second end, and the lever pivotably attached at the second end to the vent sash via a locking mechanism interface located at the vent sash, and
• wherein the base is directly attached to at least one of a window frame or a vent stop.