Soft-commutated direct current motor

  • US 5,929,579 A
  • Filed: 06/19/1998
  • Issued: 07/27/1999
  • Est. Priority Date: 03/30/1998
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method for soft commutation of a brush-type DC machine, having a plurality of armature coils, having a commutator and having at least two main brushes, the method comprising:

  • making an electrical connection between two additional brushes and one of the armature coils before said one of the armature coils is disconnected from at least one of the main brushes; and

    receiving and dissipating current from said one of the armature coils before said one of the armature coils is electrically disconnected from at least one of the main brushes.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×