Balloon with flat film valve and method of manufacture
US5248275A · kind A · utility
70Cited by
20References
54Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 1991 |
| Grant date | Sep 28, 1993 |
| Priority date | — |
| Expiry date | May 20, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/16
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A balloon includes a pair of overlying valve film strips disposed between a pair of overlying balloon films, which include neck and body portions. The valve film strips extend at an angle to a central axis of the neck portions, and valve seals formed in the valve film strips direct incoming gas from an inlet adjacent the neck, to an outlet between the body portions. Methods of assembling the balloons by forming the valve seams and neck seams without moving the balloon films or valve film strips is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.