Patent ID: 8104147

Claim:
A fluid tight slide fastener comprising: two flanking strips, each of said flanking strips having a row of closure elements; a slider slidably associated with opposite edges of said two flanking strips to provide for their closure; and an upper end stop with which said slider is removably engaged upon closure, wherein said upper end stop has at least one section with a first tilted surface having a slope with reference to a horizontal symmetry plane with respect to the upper end stop; wherein said slider has at least one section with a second tilted surface having a slope with reference to said horizontal symmetry plane; and wherein said first tilted surface of the upper end stop matches said second tilted surface of the slider, such that said first and second tilted surfaces are complementary to each other, providing a clearance-recovery wedge coupling between the slider and the upper end stop upon closure of the slide fastener and engagement of said slider with said upper end stop.