Process of making tri-arc filaments
US8790556B2 · kind B2 · utility
35Cited by
14References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2012 |
| Grant date | Jul 29, 2014 |
| Priority date | — |
| Expiry date | Jul 25, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2973
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A spinneret having tri-arc holes may be used to produce tri-arc filaments. In some instances, tri-arc holes have a Y-shape with three prongs and each prong having an arc at the end of the prong that tapers from the end of the arc to a connection point of an adjacent arc, and tri-arc filaments have a generally-Y shape cross-section with bulbous or arcing tips. Further, tri-arc filaments may be useful in a plurality of applications including, but not limited to, filters, filters comprising particulate additives, and smoking device filters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.