Other

John L Grimes

Ross A Hewitt

Jackson I Ito

Felix F Chen

Randall L Peeters

Kenneth P Klaas

Joseph P Maceda

Svein Hestevik

An aquatic weed harvester includes an open frame and a tubular mesh harvesting material that is secured to the open frame via a series of hooks disposed about the harvesting frame. The frame can be secured to a bow of a floatable structure or vessel via a variety of configurations, such as a pair of mounting channels or a rotating frame assembly. The rotating frame assembly allows the user to rotate the harvester between an in use orientation and a stored orientation. When placed in a stored orientation, the harvester opening is rotated upwards aiding the user in sealing the harvesting bag. The vessel preferably is designed having a split bow, where the weed harvester is positioned between the two bow extensions.

Aquatic weed harvester

The present invention provides heat exchanging elements for use in Stirling engines. According to the present invention, the heat exchanging elements are made from muliple platelets that are stacked and joined together. The use of platelets to make heat exchanging elements permits Stirling engines to run more effiecient because the heat transfer and combustion processes are improved. In one embodiment, multi-stage combustion can be introduced with platlets, along with the flexibility to use different types of fuels. In another embodiment, a single component constructed from platelets can provide the heat transfer requirements between the combustion gas/working gas, working gas in the regenerator and the working gas/coolant fluid of a Stirling engine. In another embodiment, the platelet heat exchanging element can recieve solar energy to heat the Stirling engine's working gas. Also, this invention provides a heat exchanging method that allows for multiple fluids to flow in opposing or same direction.

Stirling engine having platelet heat exchanging elements

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El Dorado Hills, CA, United States of America

John L Grimes