IRON-CHROME-CO PERMANENT-MAGNET DAMPING DEVICE FOR WATT-HOUR METER

IRON-CHROME-CO PERMANENT-MAGNET DAMPING DEVICE FOR WATT-HOUR METER

  • CN 2,122,390 U
  • Filed: 08/12/1991
  • Issued: 11/18/1992
  • Est. Priority Date: 08/12/1991
  • Status: Active Grant
First Claim
Patent Images

1. , a kind of watt-hour meter permanent magnet damping unit, comprise permanent magnet ([11,12,13,14] or [21,22]), yoke [15] or extraction pole [27], regulate the branch magnetic screw ([19] or [23]) of damping torque, the geometric configuration that it is characterized in that permanent magnet is a cylinder (square-section or round section) with threaded hole.

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