Sealing zipper
OwnerAlexander M. Browninventor
Life of this patent
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Abstract
A pressure sealing zipper comprising a gasket assembled to an interdigitating zipper chain which uses a slider without a diamond to penetrate between the interlocking portions of the elements. On one side of the zipper chain, a single plate slider tracks in slots adjacent the zipper tape and maintains the elements in coplanar relationship by contacting the elements both directly and indirectly through the zipper tape. The sealing gasket is carried by the elements on the side opposite the slider. This construction permits the slider to terminate above the gasket opening in a closed end sealing zipper.
Claims13
A sealing zipper comprising a separable interdigitating chain composed of two interlocking halves having elements attached to flexible tapes and interlocked by a slider moving in one direction along said chain and separated by moving said slider in the opposite direction, said chain carrying a separable, impermeable gasket on one side, wherein the improvement comprises:
- said slider being of single plate construction and having dependent flanges which engage said elements on the side opposite said gasket but do not penetrate between the interlocking portions of said elements, two of said depending flanges extending outwardly of said elements to force them together and one of said depending flanges extending downwardly sufficiently to engage upwardly projecting walls on said elements to retain said elements in co-planar relationship during interlocking.
A sealing zipper comprising a separable interdigitating chain composed of two interlocking halves having elements attached to flexible tapes and interlocked by a slider moving in one direction along said chain and separated by moving said slider in the opposite direction, said chain carrying a separable, impermeable gasket on one side, wherein the improvement comprises:
- said slider being of single plate construction and having dependent flanges which engage said elements on the side opposite said gasket but do not penetrate between the interlocking portions of said elements, two of said depending flanges extending outwardly of said elements to force them together and each of said elements having an extended leg on the side opposite said slider which cooperates with said depending flanges to retain said elements in co-planar relationship during interlocking.
Dependencies are inferred from the claim text.