Abstract: The underwater electrical generator includes a stator core and counter-rotating turbine blades with permanent magnets in the hubs and windings in the core housing. When tethered by the nose of the housing, the water current rotates the turbine blades generating electrical current which is supplied for commercial use via the tether to a land-based utility. Ballast tanks are provided to maintain the generator at a predetermined depth. Small stator windings and permanent magnets are provided in the rotating hubs and core housing respectively to charge batteries in the hubs for altering the pitch of the blades such that the blades can be feathered for maintenance outages.

Abstract: The silo includes at least three hoppers, each formed by flat inclined plates along opposite sides and ends terminating in rectilinear discharge openings extending lengthwise transversely of a loading area for trucks below the discharge openings. Clam gates are movable between open and closed positions to discharge material into the truck bed. By using flat sided hoppers, the discharge area at the bottom of the silo is increased, facilitating faster loading of trucks with the particulate material.