Inductively heated drawroll
US4005302A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 1974 |
| Grant date | Jan 25, 1977 |
| Priority date | — |
| Expiry date | Oct 24, 1994 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD02J13/005
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A heatable drawroll for drawtwisting, draw-winding and spin-draw winding machines includes a stationary induction heating coil having a core and mounted within rotatable metal jacket. A sleeve of heat and electrical insulating material is stationarily disposed inside the jacket in radially spaced relation to the jacket and the coil to circumferentially surround the coil and form an intermediate space therewith for receiving a coolant for cooling the coil. Means are provided for supplying coolant to and removing coolant from the intermediate space. A second coolant space can also be formed between the coil and the core and be connected with the first space via coolant ducts through the coil. The sleeve may be porous so as to allow some of the coolant to flow therethrough and impinge on the inner surface of the jacket.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.