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Wire tensioner with program controlled bidirectional pulley wheel

  • US 5,310,124 A
  • Filed: 04/29/1992
  • Issued: 05/10/1994
  • Est. Priority Date: 04/29/1992
  • Status: Expired due to Fees
First Claim
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1. A wire tensioner for maintaining wire at a substantially constant tension in a machine that winds wire around a workpiece, comprising:

  • a frame;

    means mounted on the frame for receiving the wire from a wire supply;

    a pulley wheel that engages the wire and accepts the wire from the means for receiving; and

    a drive unit mounted on the frame and connected to the pulley wheel for rotating the pulley wheel in a first direction such that wire is fed toward the workpiece, the wire between the pulley wheel and the workpiece accordingly having a lower tension than the wire between the pulley wheel and the workpiece would otherwise have, and a second direction such that wire is drawn back from the workpiece, the wire between the pulley wheel and the workpiece accordingly having a higher tension than the wire between the pulley wheel and the workpiece would otherwise have, the drive unit receiving and being responsive to drive signals that control torques applied by the drive unit.

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