Press bobbin for yarn treatment
US4720057A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 1987 |
| Grant date | Jan 19, 1988 |
| Priority date | — |
| Expiry date | May 15, 2007 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06B23/042
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A press bobbin for yarn treatment formed of a cylindrical wall which is fabricated by blow molding of a synthetic plastic and comprises relatively thin-gage zones and relatively thick-gage zones extending circumferentially and alternately arranged in the axial direction of the bobbin. The cylindrical wall defines an indentation configuration along the axial direction wherein the thin-gage zones correspond to projecting portions and the thick-gage zones to recessed portions. The thick-gage zones are defined with holes for passage of liquid and the thin-gage zones are, when pressed axially, bendable in a U-form to protrude outwardly, thereby to be axially compressible. The relatively thick-gage zones may be provided with reinforcing members which serve to suppress compression of the bobbin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.