Apparatus for the controlled moving of a warp thread
US6189576A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 22, 1999 |
| Grant date | Feb 20, 2001 |
| Priority date | — |
| Expiry date | Nov 22, 2019 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD03C11/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An apparatus moves a warp thread in a controlled manner by a punctuate compulsory guidance between three positions, namely a middle, an upper and a lower position. It comprises a pendulum which is pivotal about an axis and into which an electrical coil is integrated and stationary permanent magnets. The named positions are given by equilibrium positions of the pendulum, with forces which act on the pendulum in these positions being in each case in an equilibrium. The equilibrium positions for the upper or the lower position respectively can be produced by forces between the permanent magnets and the currently carrying coil; the equilibrium position for the middle position is given by the pendulum with a current-less coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.