B - Operations – Transporting – 21 – B
Patent
B - Operations, Transporting
21
B
242/9
B21B 39/08 (2006.01) B21C 47/00 (2006.01) B21C 47/02 (2006.01) B65H 23/10 (2006.01)
Patent
CA 1272175
A B S T R A C T A method of inducing back tension in a longitudinally moving magnetiseable strip by positioning a stationary electro-magnet adjacent one side of the strip, interposing a layer of friction material between the magnet and the strip and energising the magnet to effect pressure contact between the strip and the layer. Also disclosed is a drag pad having an electro-magnet providing an array of parallel elongate pole faces each of opposite polarity to its neighbouring face or faces and a layer of friction material covering the array.
473951
John Lysaght (australia) Limited
Morrison Bruce R.
Rolston George A.
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