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Marine jet drive with impeller-end and engine-end flexible couplings

  • US 6,358,107 B1
  • Filed: 03/31/2000
  • Issued: 03/19/2002
  • Est. Priority Date: 05/13/1991
  • Status: Expired due to Fees
First Claim
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1. In a vessel-propelling marine jet drive having forward and rearward ends, a rotatable impeller, an impeller housing around the impeller, an intake duct forward of the impeller housing, a diffusor housing rearward of the impeller housing, an engine, and a drive shaft extending from the engine to the impeller, the improvement comprising:

  • a rear flexible coupling flexibly connecting the drive shaft to the impeller;

    a front flexible coupling flexibly connecting the drive shaft to the engine; and

    the drive shaft being substantially unsupported between the front and rear flexible couplings.

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