Thread clamp for a rapier head
US7543610B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2007 |
| Grant date | Jun 9, 2009 |
| Priority date | — |
| Expiry date | Jun 11, 2027 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD03D47/23
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A thread clamp for a rapier head (1) is presented which contains a clamping part (4) for firmly clamping a weft thread (3) and an actuator (5) for moving the clamping part (4). The actuator (5) includes a ferromagnetic core (12), an armature (11) and at least one winding (13) which is arranged on the core or armature in order to produce a magnetic field in the latter and to move the armature and the clamping part, which is operatively connected to the latter, with the core (12) having two limbs (12.1, 12.2) between which the armature (11) is movably arranged, and with each limb being provided with a permanent magnet (14.1, 14.2) in order to hold the armature at one of the two rest positions in the current-free state of the winding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.