Friction disc for driving twist tubes rotating at high revolution speeds
US3949618A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 19, 1975 |
| Grant date | Apr 13, 1976 |
| Priority date | — |
| Expiry date | Mar 19, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L21/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A friction disc is described for very quietly driving twist tubes at several hundred thousand revolutions per minute in a false-twist device for texturing synthetic filaments. The disc has a titanium alloy support flange having a specific electrical resistance of between 1 and 2 .OMEGA./mm.sup.2 /m, a modulus of elasticity of at least 6500 kg/mm.sup.2 and an ultimate tensile strength of at least 25 kg/mm.sup.2. The support flange has a circular cylindrical circumferential surface which fits and is rigidly fixed to the internal surface of a polyurethane friction ring, the external cylindrical surface of which frictionally drives the twist tube. A twist tube driving roller has two such discs spaced apart on a steel driving shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.