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Adjustable pitch propeller

  • US 5,997,253 A
  • Filed: 07/09/1998
  • Issued: 12/07/1999
  • Est. Priority Date: 07/09/1998
  • Status: Expired due to Fees
First Claim
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1. An adjustable propeller, comprising:

  • a hub portion which is attachable to a rotatable shaft of a marine propulsion device, said hub portion having a first propeller receptacle formed thereon;

    a first propeller blade having a base portion which is attachable to said first propeller receptacle, said first propeller receptacle having a first plurality of alignment devices, said base portion having a second plurality of alignment devices, a first one of said second plurality of alignment devices being alignable with a first one of said first plurality of alignment devices to define a first pitch position of said first propeller blade, a second one of said second plurality of alignment devices being alignable with a second one of said first plurality of alignment devices to define a second pitch position of said first propeller blade, said first and second pitch positions being distinct from each other;

    an opening formed through a thickness of said hub portion; and

    said base portion of said first propeller blade comprises an extension which is shaped to be received in said opening; and

    a protuberance attached to said extension to limit removal of said first propeller blade from said hub portion and require the relative position of said propeller blade and said hub portion to match one or more alternative configurations.

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