Twist tube for false-twisting devices
US4040242A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 29, 1976 |
| Grant date | Aug 9, 1977 |
| Priority date | — |
| Expiry date | Nov 29, 1996 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD02G1/06
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A twist tube for a false-twisting device for texturing textile yarns has an enlarged end in which the bore has an oblong cross-section with both the major and minor axes substantially longer than the bore of the main portion of the tube. The thread guide pin extends in the direction of the minor axis between flat sides of the bore which are joined at each end by arcuate sides. Two circular, coaxial openings extend from outside the enlarged end to the arcuate sides. The oblong shape and these openings assist the threading of the twist tube. The thread guide pin is displaced laterally with respect to the longitudinal axis of the main portion of the tube by a fraction of the pin diameter. The axis of the openings, which is perpendicular to the pin axis, is displaced from the pin axis by a similar fraction, towards the main portion of the tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.