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Pub. No.:    WO/2018/012682    International Application No.:    PCT/KR2016/013123
Publication Date: Fri Jan 19 00:59:59 CET 2018 International Filing Date: Wed Nov 16 00:59:59 CET 2016
IPC: A47J 31/00
A47J 31/36
A47J 31/44
A47J 31/46
Applicants: HUGHKIM INC.
주식회사 휴김
Inventors: KIM, Hyun Soo
A hand-operated espresso machine of the present invention may comprise: a water container for receiving therein water which is used for espresso extraction; a cylinder detachably coupled to a lower part of the water container; a piston unit, disposed inside the cylinder in such a way as to slidingly move up and down along the cylinder, for allowing water received in the water container to flow down in the direction of the cylinder, and preventing water located in a lower part thereof from ascending in the direction of the water container even when the piston unit slidingly moves down along the cylinder; a portafilter which is detachably connected to a lower part of the cylinder in such a way that the portafilter is disposed on a lower part of a piston and in which ground coffee beans are loaded; and a pair of lever units, rotatably installed to the water container and rotatably connected to the piston, for pushing down the piston unit at a high pressure in the direction of the portafilter on the principle of lever, whereby water between the piston unit and the portafilter is pressurized at a high pressure to pass through the portafilter having ground coffee beans loaded therein, thus extracting espresso.