Patent ID: 9359992
Filing Date: 2016-06-07
CPC Classification: A43B,F03B,F03G

Claim Text:
1. A hydraulic system for a footwear, comprising: a first chamber having an elastic cover and a first elastic membrane, the first elastic membrane dividing the first chamber into a first and second compartments; a second chamber having a second elastic membrane dividing the second chamber into a third and fourth compartments, wherein the first and third compartments are filled with gas, and the second and fourth compartments are filled with liquid; a generator having a turbine; a first passage to fluidly couple the second compartment to the turbine; and a second passage to fluidly couple the fourth compartment to the turbine, wherein the liquid of the second compartment flows to the fourth compartment and turn the turbine when the elastic cover of the first chamber is pressed and wherein the liquid of the fourth compartment flows to the second compartment and turn the turbine when the elastic cover of the second chamber is pressed and wherein the first passage has a first nozzle to eject the fluid to the turbine when the elastic cover of the first chamber is pressed, the second passage has a second nozzle to eject the fluid to the turbine when the elastic cover of the second chamber is pressed, and the turbine has a drain that drains the fluid into a first opening on the second passage when the fluid is flowing from the first chamber to the second chamber and drains the fluid into a second opening on the first passage when the fluid is flowing from the second chamber to the first chamber, the first and second openings each has a check valve that blocks the first and second openings when the fluid in the respective passage is flowing toward the turbine.