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Shovel

  • US 6,789,335 B1
  • Filed: 11/30/2000
  • Issued: 09/14/2004
  • Est. Priority Date: 03/31/1999
  • Status: Expired due to Fees
First Claim
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1. An excavator in which an upper turning body is mounted on a lower traveling body, and an excavation attachment is provided on the upper turning body, comprising an engine as a power source, a generator driven by the engine, and a plurality of electric motors rotated by electric power supplied from the generator, wherein the electric motors as a driving source operate the lower traveling body, and the upper turning body and each operating part of the excavation attachment, wherein in the operating part provided with a hydraulic actuator, a hydraulic pump is driven by the electric motor, and said hydraulic actuator is operated by oil from said hydraulic pump.

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