Patent ID: 7197772

Claim:
A closure assembly comprising: a flexible substrate having an opening therein, the opening extending in a first direction, wherein the substrate has portions forming a first side flap on one side of the opening, and a second side flap on an opposite side of the opening; a resealable closure having portions affixed to the first side flap, and portions affixed to the second side flap, the closure being operable between a first closed position, in which the opening is closed, and a second open position, in which the opening is revealed; and a resilient spring member first arm which engages the first side flap and a resilient spring member second arm which engages the second side flap, the spring member first arm being positioned in a second direction across the opening from the second arm, wherein a first plane is defined by the first direction and the second direction, and wherein the spring member is formed such that portions of the first arm are spaced from portions of the second arm in a direction perpendicular to the first plane when the spring member is undeformed, and when the closure is in the closed position, the first arm is brought into approximately the same plane as the second arm, such that in the second open position, the spring member urges portions of the first flap away from portions of the second flap in a direction perpendicular to the first plane to thereby enlarge the area of the opening.