Inflatable articles and method of making same
First Claim
1. An inflatable article made of air impervious thermoplastic sheet materials, comprising:
- at least one inflatable unit having an inflating valve provided thereon and having normally ruffled portions located outside of air enclosing seals wherein there is located on at least one selected portion a stabilizing seal adjacent to an air enclosing seal to provide an essentially flat and unruffled constant length seal which remains as such whether said article is inflated or deflated and which permits a center line through said inflatable unit to shorten and lengthen upon inflation and deflation, respectively, without causing said selected portion to ruffle upon inflation and which does not permit said article to lay flat upon deflation.
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Accused Products
Abstract
Inflatable article made of air impervious thermoplastic sheet materials including one or more inflatable units having one or more inflatable valves provided thereon respectively for injecting air into those one or more inflatable units, wherein at least two seals, with one of the seals being a stabilizing seal and being adjacent or touching one of the other seals, are located at selected inner and/or outer portions of the inflatable article with the stabilizing seals providing the selected portions with essentially flat and unruffled constant length seals which remain flat and constant length whether the inflatable article is inflated or deflated thereby permitting another article or articles with constant length portions to be joined to the selected stabilized constant length portions of the sealed inflatable article which would not have been possible if stabilizing had not been effected. A method for making inflatable articles having stabilizing seals that includes inflating the articles before providing the stabilizing seal or seals.
46 Citations
10 Claims
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1. An inflatable article made of air impervious thermoplastic sheet materials, comprising:
- at least one inflatable unit having an inflating valve provided thereon and having normally ruffled portions located outside of air enclosing seals wherein there is located on at least one selected portion a stabilizing seal adjacent to an air enclosing seal to provide an essentially flat and unruffled constant length seal which remains as such whether said article is inflated or deflated and which permits a center line through said inflatable unit to shorten and lengthen upon inflation and deflation, respectively, without causing said selected portion to ruffle upon inflation and which does not permit said article to lay flat upon deflation.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An inflatable article, rounded in shape made of air impervious thermoplastic sheet materials, comprising:
- at least one rounded inflatable unit formed by an outer seal and at least one inner concentric seal and having an inflating valve provided thereon, wherein there is located at an outer portion a stabilizing seal adjacent to said outer seal to provide an essentially flat and unruffled constant length seal which remains as such whether said article is inflated or deflated and does not permit the article to lay flat upon deflation and which permits the widths of said inflatable unit to shorten and lengthen upon inflation and deflation without causing said outer portion around said article to ruffle on inflation.
- View Dependent Claims (10)
Specification