Patent ID: 7739835

Claim:
An opening mechanism comprising a base mounting plate, a cover, a lever member and a tension spring, a first end of said spring being connected to said cover and a second end of said spring being connected to a tension arm mounted to and rotatable with an axle of said lever member, said lever member having a first lever arm and a second lever arm, said first and second lever arms being attached to and rotatable with said axle, said axle being pivotally mounted to said cover, said lever arms adapted to rotate from a first position to a second position, the movement of said lever arms from said first position to said second position causing said tension arm mounted to said axle to rotate with said axle, thereby causing said spring to extend from a first position to a second position, said spring causing said lever arms to return to said lever arm first position when said spring returns to said spring first position, said movement of said lever arms from said lever arm first position to said lever arm second position causing one of said lever arms to cause a closure to move from a closed position to an open position, said spring and said tension arm are disposed within said cover when said lever arms are in said first lever arm position and when said lever arms are in said second lever arm position, and said cover is partially disposed within an opening defined by one of said lever arms.