Apparatus and method for forming inflated chambers
US7721781B2 · kind B2 · utility
15Cited by
58References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2006 |
| Grant date | May 25, 2010 |
| Priority date | — |
| Expiry date | Feb 26, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24744
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An inflatable web, and method and apparatus for inflating the web, which generally includes two sheets having inner surfaces sealed to each other in a pattern defining a series of inflatable chambers of predetermined length, each of the chambers having at least one change in width over their length; an inflation port located at a proximal end of each chamber, the inflation ports being formed by intermittent seals between the sheets; and longitudinal flanges formed by a portion of each of the sheets that extend beyond the inflation ports and intermittent seals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.