Sonic sealed bias seam
US6228195A · kind A · utility
5Cited by
20References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1999 |
| Grant date | May 8, 2001 |
| Priority date | — |
| Expiry date | Feb 8, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/108
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for forming an ultrasonic bias seam includes a rotary anvil disposed within a housing for rotation with the fabric being sealed. A selvage puller separates the selvage from the fabric. After sealing the fabric with the ultrasonic sealing head, the fabric is then cut in a spiral pattern at a predetermined angle. The resulting single-ply bias seam eliminates bulk, has a clean finished look and provides a completely sealed seam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.