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Methods and apparatus for identifying hooks of electric motors

  • US 5,552,572 A
  • Filed: 10/12/1995
  • Issued: 09/03/1996
  • Est. Priority Date: 11/30/1989
  • Status: Expired due to Fees
First Claim
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1. The method of making electric motor armatures using a deforming member to deform a first portion of a workpiece and using an electronic circuit to recognize said first portion, the method comprising the steps of:

  • moving said deforming member relative to said workpiece in order to cause said deforming member to contact and apply force to said first portion, to deform said first portion and thereby distinguish said first portion from a second portion of said workpiece;

    contacting a contact member against said workpiece;

    applying a predetermined voltage signal between a sensing electrode and said contact member;

    moving said sensing electrode along an axis, and simultaneously monitoring displacement of said sensing electrode movement, until said electrode reaches a predetermined displacement;

    determining whether said sensing electrode is in contact with an individual portion of said workpiece at said predetermined displacement, thereby establishing a circuit path for said voltage signal;

    identifying said individual portion as a first portion or a second portion based upon whether a circuit path is established; and

    fusing said individual portion using a fusing operation which varies depending on whether said portion is identified as a first portion or a second portion.

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