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Lemofouet Sylvain, Rufer Alfred: Multistage hydraulic gas compression/expansion systems and methods. Ecole Polytechnique Fédérale de Lausanne, Lemofouet Sylvain, Rufer Alfred, CRONIN Brian, March 19, 2009: WO/2009/034548 (71 worldwide citation)

Multistage hydraulic systems and methods for converting the potential energy of a pressurized gas, particularly air, into mechanical work operating in motor, and for producing compressed gas from the mechanical work of the rotating shaft (A1.1 ) when rotating when operating in compressor mode, by pe ...


2
McAlister Roy E: Vapor pressurized hydrostatic drive. March 14, 1972: US3648458 (71 worldwide citation)

A hydrostatic drive system generally of the type wherein vapor is alternately directed into one of two reservoir tanks so that working fluid in that tank is forced out of the tank by pressure of the vapor and through a fluidic motor to generate a mechanical output before it returns to refill the oth ...


3
Verschuur Eke: Energy storage and recovery.. Shell Int Research, October 8, 1986: EP0196690-A1 (57 worldwide citation)

During off-peak hours, mechanical energy is stored by pumping liquid from a first cavern into a second cavern containing a gas. In this way the gas in the second cavern is compressed. The stored energy is recovered by allowing the gas in the second cavern to expand, which causes liquid to flow-back ...


4
Straumsnes O Robert: Water current power generator system. Spellman Jr Martin J, December 23, 1975: US3928771 (43 worldwide citation)

A water current power generator system comprises one or more generator ships firmly anchored to the water bottom to generate power from sea currents or the tidal flow of rivers. The hull of a typical ship includes an inlet where the moving water enters and drives blades hinged to a toothed belt whic ...


5
Haanen Martin I: Wind operated power generating apparatus. Gregory Leo, April 23, 1974: US3806733 (41 worldwide citation)

A wind operated electric power generating apparatus providing a pressurized supply of air to inflate air cells carried by an endless belt, said air cells rising in a tank of fluid to drive said belt, said belt operating an electric current generator.


6
Troy O McBride, Robert Cook, Benjamin R Bollinger, Lee Doyle, Andrew Shang, Timothy Wilson, Michael Neil Scott, Patrick Magari, Benjamin Cameron, Dimitri Deserranno: Energy storage and generation systems and methods using coupled cylinder assemblies. SustainX, Bingham McCutchen, October 18, 2011: US08037678 (38 worldwide citation)

In various embodiments, pneumatic cylinder assemblies are coupled in series pneumatically, thereby reducing a range of force produced by or acting on the pneumatic cylinder assemblies during expansion or compression of a gas.


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Lesser Jerome M: Submarine electrical energy generating apparatus. Pennie & Edmonds, October 14, 1975: US3912937 (32 worldwide citation)

This invention relates to a submarine electrical energy generating apparatus for utilizing the currents of oceans and seas to generate electricity comprising an electrical generator in a waterproof compartment, a turbine comprising a rotatable shaft having dual pitched wheel vanes extending therefro ...


9
Anderson Peter James: Turbine means to generate energy from wind and water on a sailing vessel. Eclectic Energy, September 4, 2002: GB2372783-A (30 worldwide citation)

A generator has interchangeable wind (10, Figure 1) and water 14 turbine assemblies, and drive means 15 selectively connected to a drive shaft 2 that transmits torque to a generator 3 or other energy conversion device which is pivotably mounted 13 on a sailboat for immersion of the turbine in wind o ...


10
Troy O McBride, Robert Cook, Benjamin R Bollinger, Lee Doyle, Andrew Shang, Timothy Wilson, Micheal Neil Scott, Patrick Magari, Benjamin Cameron, Dimitri Deserranno: Energy storage and generation systems and methods using coupled cylinder assemblies. SustainX, Bingham McCutchen, February 7, 2012: US08109085 (28 worldwide citation)

In various embodiments, pneumatic cylinder assemblies are coupled in series pneumatically, thereby reducing a range of force produced by or acting on the pneumatic cylinder assemblies during expansion or compression of a gas.