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Payload delivery units for pressure protecting and delivering a submerged payload and methods for using the same

  • US 8,408,956 B1
  • Filed: 06/29/2009
  • Issued: 04/02/2013
  • Est. Priority Date: 07/08/2008
  • Status: Expired due to Fees
First Claim
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1. A payload delivery unit for protecting and delivering a payload submerged in a submersion medium, the payload delivery unit comprising:

  • an unmanned buoy including a container, the container including a pressure-resistant shell defining a sealed containment chamber;

    a drop weight member mounted on the shell and having a negative buoyancy with respect to the submersion medium; and

    a retention system operative to retain the drop weight member on the buoy and selectively release the drop weight member from the buoy;

    wherein the drop weight member includes a cap mounted on a portion of and in close proximity to the shell and having a shape generally conformal to an exterior surface of the portion of the shell.

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