Method of making a balloon with flat film valve
US5378299A · kind A · utility
6Cited by
40References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1993 |
| Grant date | Jan 3, 1995 |
| Priority date | — |
| Expiry date | Apr 5, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/16
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of making a balloon includes providing two balloon films and providing two valve films. The two valve films are placed one on top of the other and then inserted between the two balloon films. Then a portion of each of the valve films is tack sealed to its respective adjacent balloon film. The valve films are then sealed together to form a valve passageway therein. During the valve sealing step, the balloon films are held in a fanned out manner. Finally, the balloon films are sealed together along the perimeter thereof to form the balloon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.