Vassilios I Vamvas

20210285415, Sep 16, 2021

Feb 6, 2021

17/169412

Vassilios Vamvas - Bedford MA, US

F03B 13/22
F03B 13/20
F03G 7/08
B63B 35/44
H02S 10/10
H02S 10/40
H02K 7/18

A turbine comprises a shaft (), a mass () eccentrically mounted for rotation about shaft (), having its center of gravity at a distance from the shaft () and a motion base (). Motion base () rigidly supports the shaft (), and is configured for moving the shaft () in any direction of at least two degrees of movement freedom, except for heave.A floating vessel-turbine (), encloses entirely the eccentrically rotating mass () and the motion base (). The turbine converts ocean wave energy into useful energy, very efficiently.

20200109694, Apr 9, 2020

Nov 19, 2019

16/689075

Vassilios Vamvas - Bedford MA, US

F03B 13/18
F03B 13/20
H02K 7/18

A turbine comprises a shaft (), a mass () eccentrically mounted for rotation about shaft (), having its center of gravity at a distance from the shaft () and a motion base (). Motion base () rigidly supports the shaft (), and is configured for moving the shaft () in any direction of at least two degrees of movement freedom, except for heave.A floating vessel-turbine (), encloses entirely the eccentrically rotating mass () and the motion base (). The turbine converts ocean wave energy into useful energy, very efficiently.

20190254380, Aug 22, 2019

Feb 20, 2018

15/900746

Vassilios Vamvas - Bedford MA, US

A43B 3/00
H02N 2/18

A pneumatic energy conversion mechanism for use with footwear generates electricity from foot-strikes. The mechanism comprises: at least one air-chamber with an outlet disposed to be compressed on foot strikes and decompressed when the foot is lifted; a micro-electrical generator supported within a support air tube pneumatically connected with the at least one air-chamber's outlet, at its one end, while having its other end open; at least one unidirectional axial-flow micro-turbine, such as the wells turbine, having all its blades exposed to the airflow, thus providing a powerful torque the same micro-electrical generator.

20180372061, Dec 27, 2018

Jul 10, 2018

16/032045

Vassilios Vamvas - Bedford MA, US

F03B 13/22
F03B 13/20
H02K 7/18
B63B 35/44

A turbine comprises a shaft (), a mass () eccentrically mounted for rotation about shaft (), having its center of gravity at a distance from the shaft () and a motion base (). Motion base ()rigidly supports the shaft (), and is configured for moving the shaft () in any direction of at least two degrees of movement freedom, except for heave.A floating vessel-turbine (),encloses entirely the eccentrically rotating mass () and the motion base (). The turbine converts ocean wave energy into useful energy, very efficiently.

20170009734, Jan 12, 2017

Jun 26, 2016

15/193104

Vassilios Vamvas - Bedford MA, US

F03B 13/22
B63B 35/44
H02K 7/18
F03B 13/16

A turbine comprises a shaft (), a mass () eccentrically mounted for rotation about shaft (), having its center of gravity at a distance from the shaft () and a motion base (). Motion base () rigidly supports the shaft (), and is configured for moving the shaft () in any direction of at least two degrees of movement freedom, except for heave.A floating vessel-turbine (), encloses entirely the eccentrically rotating mass () and the motion base (). The turbine converts ocean wave energy into useful energy, very efficiently.

20150267566, Sep 24, 2015

Mar 16, 2015

14/659366

Vassilios Vamvas - Bedford MA, US

F01K 3/18
F28D 20/02
F01K 13/02
F01K 7/16
F01K 23/18
F01K 23/10

A combined cycle power plant for frequent stops and startups comprises at least one gas turbine, a heat recovery steam generator, at least one steam turbine and a thermal energy storage and retrieval system utilizing latent heat of fusion. Phase change materials receive thermal charge from two sources: (a) renewable energy generation plants, when their production exceeds demand and (b) gas turbine exhaust heat. The thermal energy storage and retrieval system, discharges efficiently thermal energy for steam production, which keeps the at least one steam turbine preheated and ready for fast startups, thus increasing the plant's flexibility and efficiency.A novel two stage latent thermal energy storage system provides at least supercritical steam.

20140327338, Nov 6, 2014

Apr 24, 2014

14/261418

Vassilios Vamvas - Bedford MA, US

F03B 13/14
F28D 20/02
H02N 11/00

310306, 60497

A float operated lever device for wave energy conversion comprising at least one force amplifying lever, a pivot secured on a secured platform, a buoyant float attached to said lever and a latch means secured in position for obstructing the motion of said force amplifying lever for a fraction of half wave's period, when said float is nearly at its highest and lowest positions whereby said force amplifying lever travels downward or upward respectively, at a greater velocity and for a greater distance than in the case of free floating thus producing an amplified output force, pivoting speed and angular displacement.A method for thermal energy storage and retrieval of electricity in phase change material.