Patent ID: 6996879

Claim:
A closure device, comprising: first and second interlocking fastening strips arranged to be interlocked over a predetermined longitudinal x axis between first and second ends, the fastening strips being secured together at the first and second ends, said fastening strips having a transverse y axis and a vertical z axis, said transverse y axis being perpendicular to said longitudinal x axis, said vertical z axis being perpendicular to said longitudinal x axis, said vertical z axis being perpendicular to said transverse y axis; a slider slidably disposed on the fastening strips for movement between the first and second ends, the slider facilitating occlusion of the fastening strips when moved towards the first end, the slider including a separator for facilitating the deocclusion of the fastening strips when the slider is moved towards the second end; the first fastening strip includes a first upper flange portion having a first length which extends upward generally along said vertical z axis and a second length which extends inward generally along said transverse y axis toward the second fastening strip, said first length of said first upper flange portion is a constant length while being continuous and spanning the entire longitudinal x axis of said first fastening strip, said second length of said first upper flange portion includes a first altered flange portion of reduced inward extension disposed near the first end of the first fastening strip.