Drawing roller unit with scavenging means
US5324905A · kind A · utility
5Cited by
9References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1991 |
| Grant date | Jun 28, 1994 |
| Priority date | — |
| Expiry date | Apr 26, 2011 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD02J1/224
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A drawing roller unit is constructed with a godet and an electric motor mounted on a common shaft. A passage is provided throughout the unit to convey a non-flammable scavenging gas through the motor and the godet to reduce the risk of explosion due to sparking by the electric motor and/or other electrical parts of the drawing roller. The gas introduced can leave the unit only through a narrow gap. The pressure of the gas is consequently above atmosphere pressure and prevents the entrance of air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.