Patent ID: 7036274

Claim:
A window opening and closing assembly comprising: a first member and a second member; a rack gear slidably mounted between said first member and said second member; a pinion gear operatively engaged with said rack gear; a handle having a handle shaft connected to said pinion gear whereby rotatable movement of said handle shaft will cause said pinion to move said rack gear; a pin mounted on one side of said pinion gear, said pin moving from a first position when said handle is in a fully open position to a second position when said handle is in a fully closed position; a resilient element mounted in the path of said pin proximate each of said first and second positions, the arrangement being such that as said pin approaches either of said first and second positions, said pin will contact one of said resilient elements to thereby cause said resilient element to temporarily deflect to permit passage of said pin, said resilient element returning to an original position after passage of the pin to thereby retain the pin in the desired position.