Hollow filament cross-sections containing four continuous voids
US5190821A · kind A · utility
26Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1991 |
| Grant date | Mar 2, 1993 |
| Priority date | — |
| Expiry date | Jul 24, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2975
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Continuous synthetic filaments having a four sided cross-sectional contour and four substantially equispaced continuous voids are disclosed. The voids have a substantially round or nonround shape, and each void is substantially centered on a side of the filament's contour.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.