USA As Represented by Secretary of the Navy

Joshua Bianchi

Timothy James Keenan

Yolanda Meriah Arias-Thode

Lewis Hsu

Samuel R Bona

Bart Chadwick

Ryan John Halonen

A self-burying microbial fuel cell can include a housing with conductive elements. An anode and cathode can be integrated into the housing at respective proximal and distal ends. A self-burying means for partially burying the microbial fuel cell in a submerged environment is included, so that the anode is buried but the cathode is exposed to the submerged environment can be included. The self-burying means can include omni-directional vibrating device located within the housing, a plurality of intake ports formed in the housing for a pump within the housing. The pump outputs into a longitudinal fluid conduit that extends through the housing and exits at the distal end of the housing. When the vibrating device activates at the same time as the pump, temporary slurry can be formed at the extreme distal end of the device, and the vibrating action causes the microbial fuel cell to become partially buried.

Self-burying sediment energy harvester

In one embodiment, the present invention provides a method for forming battery tray for holding cylindrical cell batteries. The method includes forming a battery try including a base support having a generally flat bottom surface and multiple adjacent cylindrical cavities are formed within the base support, using a circle packing algorithm to form the cylindrical cavities. The adjacent cavities each have at least some interstitial cylindrical riser wall structures formed with a predetermined height to hold the cylindrical cell batteries. In another embodiment, the present invention allows for packing maximum energy density per layer. This allows lifetime and power output of a battery powered device to be optimized and/or increased.

Method for maximizing packing density with cylindrical objects in cylindrical cavities

Deployment of a moored undersea device is achieved by fixing a mooring line to an anchor, and allowing the mooring line to unwind from a winding reel. A winding reel control mechanism is responsive to underwater hydrostatic pressure to release the mooring line when the hydrostatic pressure exceeds a predetermined level. When the hydrostatic pressure falls below the predetermined level, the winding reel control mechanism prevents further pay out of the mooring line.

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San Diego, CA, United States of America

Joshua Bianchi