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Counterbalance enabled power generator for horizontal directional drilling systems

  • US 7,810,582 B2
  • Filed: 11/17/2008
  • Issued: 10/12/2010
  • Est. Priority Date: 11/19/2007
  • Status: Expired due to Fees
First Claim
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1. An electrical generating system for use in a horizontal directional drilling system, the drilling system having a generally horizontal drill stem that rotates, comprising:

  • a) a generator having a first component coupled to rotate with the drill stem, and a second component capable of relative rotation with respect to the first component, one of the first and second components comprising an armature and the other of the first and second components comprising a field;

    b) an eccentric mass mounted inside of the drill stem and rotatably mounted with respect to the drill stem so that as the drill stem rotates, the eccentric mass can remain stationary;

    c) the eccentric mass coupled to the second component, wherein when the drill stem rotates, relative rotational motion is produced between the first and second components and the generator produces electrical power.

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