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Browse by Category: Main > Electrical & Energy
Class Information
Number: 60/398
Name: Power plants > Pressure fluid source and motor > Utilizing natural energy or having a geographic feature
Description: Apparatus physically related to some feature of the earth or in which pressure or kinetic energy of nature energizes motive fluid.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8667786 Converter and method for converting mechanical energy into electrical energy Mar. 11, 2014
8661807 Potential energy regenerating system and method and electricity regenerating system and method Mar. 4, 2014
8661806 Adaptive, low-impact vehicle energy harvester Mar. 4, 2014
8650869 Automatic hydraulic/pneumatic flow rectifier for bi-directional pumps Feb. 18, 2014
8646265 Hydraulic power apparatus Feb. 11, 2014
8629571 Power generation hydraulic system Jan. 14, 2014
8621856 Hydraulic drive train with energy dissipation for electricity generation Jan. 7, 2014
8614522 Energy converting device Dec. 24, 2013
8601805 Power generating apparatus of renewable energy type Dec. 10, 2013
8601804 Power generating apparatus of renewable energy type Dec. 10, 2013
8598729 Wave power plant Dec. 3, 2013
8587145 Vertical axis hydro kinetic wind turbine Nov. 19, 2013
8578708 Fluid-flow control in energy storage and recovery systems Nov. 12, 2013
8561398 Fluid-based power generation system Oct. 22, 2013
8561399 Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange Oct. 22, 2013
8564152 Dual intake wave energy converter Oct. 22, 2013
8534057 Electrical generator for waterway Sep. 17, 2013
8534364 Assembly and method for production of gas or gas and condensate/oil Sep. 17, 2013
8525364 Apparatus for converting wave energy Sep. 3, 2013
8511078 Hybrid wave energy plant for electricity generation Aug. 20, 2013
8511079 Piecewise variable displacement power transmission Aug. 20, 2013
8474253 Pressure accumulator to establish sufficient power to handle and operate external equipment and use thereof Jul. 2, 2013
8464525 Subsea power fluid recovery systems Jun. 18, 2013
8438844 Floatable wave energy converter and a method for improving the efficiency of a floatable wave energy converter May. 14, 2013
8432054 Wind turbine with hydrostatic transmission Apr. 30, 2013
8424300 Sea electricity energy production unit Apr. 23, 2013
8393149 Wind powered energy amplification system and method Mar. 12, 2013
8356480 Energy recovery device Jan. 22, 2013
8333534 Method and apparatus for improved hydropower system Dec. 18, 2012
8307640 Apparatus for generating power Nov. 13, 2012
8297052 Hydraulic electricity generator Oct. 30, 2012
8291701 System for generating electrical power and potable water from sea waves Oct. 23, 2012
8286425 Energy conversion system with duplex radial flow turbine Oct. 16, 2012
8286659 Compressor and/or expander device Oct. 16, 2012
8272211 Tide operated energy system Sep. 25, 2012
8234861 Free flow hydro-powered hydraulic ram Aug. 7, 2012
8215104 Energy from subterranean reservoir fluid Jul. 10, 2012
8209973 Wave responsive electrical generator Jul. 3, 2012
8196396 Compact design of using instream river flow and/or pump discharge flow technology added to differentials between head water and turbine location Jun. 12, 2012
8188611 Flow deflection devices and method for energy capture machines May. 29, 2012
8181455 Power generating apparatus of renewable energy type and method for installing hydraulic pump May. 22, 2012
8127542 Portable hydroelectric generating system Mar. 6, 2012
8102065 Wave energy converter Jan. 24, 2012
8096116 Mooring of multiple arrays of buoy-like WECs Jan. 17, 2012
8093743 Plant for the production of electric power from the movement of waves Jan. 10, 2012
8080888 Hydraulic generator drive system Dec. 20, 2011
8080895 Energy generation from compressed fluids Dec. 20, 2011
8074450 Wind energy system with fluid-working machine with non-symmetric actuation Dec. 13, 2011
8072088 Fluid power generator for extracting energy from a fluid flow Dec. 6, 2011
8043047 Compressor casing for an exhaust gas turbocharger Oct. 25, 2011

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