Fluid-tight slide fastener

Abstract

The present invention regards a fluid tight slide fastener (10) of the type comprising a slider (15) slidably associated with opposite edges (12a) of two flanking strips (12) to provide for their closure, and an upper end stop (16) with which said slider (15) is removably engaged upon closure, characterised in that in said upper stop (16) and in said slider (15) respective means (19,21) and counter-means (46,47) are provided for and adapted to make, upon upper stop (16)-slider (15) engagement, a clearance-recovery taper fit, so-called clearance-recovery wedge. The present invention also regards an upper stop and a slider for a slide fastener of the aforesaid type.

Description

technical field [0001] The invention in its most general aspect relates to a fluid-tight zipper in which an indicator is removably engaged in an upper end stop when closed, the indicator being slidably coupled to two edges provided for its closure. opposite edges of the strip. [0002] Specifically, the present invention relates to a so-called fluid-tight type zipper, which can ensure basic impermeability relative to fluid, especially relative to water and air, and can also be sealed under a certain pressure when it is closed. The relative fluid ensures substantial impermeability, especially impermeability to water and air. [0003] The invention also relates to an upper stop and a slider for a zipper of the type described above. [0004] In the following description, the term "fluid-tight" or "waterproof" refers to the ability of the zipper or its parts to prevent the passage of liquid and / or gas, especially water and air, even if the zipper is subjected to a certain pressu...

AI Technical Summary

Problems solved by technology

[0014] However, this material is easily removed during use of the zipper, so that the required fluid tightness decreases gradually and rapidly, and moreover, it may stain the zipper or the garment to which it is applied, as well as the storage device

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