Method and apparatus for making conductive yarn
AssigneeCoats & Clark, Inc.
InventorJohn J. M. Rees
Life of this patent
Estimating the term…
Abstract
A conductive yarn includes a continuous non-conductive carrier thread having a relatively low modulus of elasticity; a continuous metal thread; and the carrier thread being wrapped around the metal thread. A process for making such conductive yarn includes the steps of pulling the continuous metal thread off a first package; pulling the continuous carrier thread off a second package; applying a relatively high tension to the carrier thread with respect to the tension on the metal thread as both threads are being pulled off their respective packages; and wrapping the tensioned carrier thread around the pulled metal thread. Apparatus for performing the method is also provided.
Claims14
A process of making a conductive yarn, comprising the steps of:
- pulling a continuous metal thread off a first package;
- pulling a continuous carrier thread having a relatively low modulus of elasticity off a second package;
- applying a relatively high tension to said carrier thread with respect to the tension on said metal thread as both threads are being pulled off their respective packages;
- and
- wrapping the tensioned carrier thread around said pulled metal thread.
Apparatus for making a conductive yarn, said apparatus comprising:
- means for pulling a continuous metal thread off a first package and for pulling a continuous carrier thread having a relatively low modulus of elasticity off a second package;
- means for applying a relatively high tension to said carrier thread with respect to the tension on said metal thread as both threads are being pulled off their respective packages;
- and
- means for wrapping the tensioned carrier thread around said pulled metal thread.
Dependencies are inferred from the claim text.