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公开(公告)号：US11551661B2
公开(公告)日：2023-01-10
申请号：US16978879
申请日：2019-02-19
发明人： Kyungjun Song , Shin Hur , Duck Gyu Lee , Eun Joong Lee
摘要： A directional sound apparatus includes a planar shape plate and a sound wave generator. The planar shape plate has a plurality of grooves formed on a surface of the planar shape plate. The sound wave generator is configured to radiate a sound wave to outside from the surface of the planar shape plate. A width of each of the grooves and a distance between the grooves adjacent to each other are smaller than a wavelength of the sound wave. The planar shape plate has a plurality of cell areas in which at least one groove is included. A structure of the groove included in a first cell area is different from that of the groove included in a second cell area adjacent to the first cell area, so that surface admittance in the first cell area is different from that in the second cell area.
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公开(公告)号：US12023923B2
公开(公告)日：2024-07-02
申请号：US17632031
申请日：2020-12-09
发明人： Shin Hur , Duck Gyu Lee , Bo-Yeon Lee
CPC分类号： B41J2/14008 , B41J2/14088 , B41J2/14201 , B41J2/04
摘要： In a droplet ejection apparatus and a droplet ejection method using the droplet ejection apparatus, the droplet ejection apparatus includes a liquid supply unit, a nozzle and a standing wave generating unit. The liquid supply unit is configured to provide a pressure to a liquid. The nozzle is connected to the liquid supply unit through a connecting conduit, to eject the liquid with a droplet. The standing wave generating unit is configured to generate a standing wave around the nozzle at which the droplet is formed, to detach the droplet from the nozzle.
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公开(公告)号：US12128623B2
公开(公告)日：2024-10-29
申请号：US17260035
申请日：2019-07-11
发明人： Duck Gyu Lee , Sang Hyun Ahn , Jun Hee Lee , Sua Park , Wan-Doo Kim
IPC分类号： B41J2/175 , B29C64/10 , B29C64/209 , B29C64/227 , B29C64/321 , B29C64/386 , B33Y10/00 , B33Y30/00 , B33Y40/00 , B67D7/16 , B41J2/14
CPC分类号： B29C64/321 , B29C64/10 , B29C64/209 , B29C64/227 , B29C64/386 , B33Y10/00 , B33Y30/00 , B33Y40/00 , B67D7/16 , B41J2/14 , B41J2/17506 , Y10T137/86863
摘要： An embodiment of the present invention provides a single-particle dispensing device, including: a first syringe containing particles and fluid therein; a particle separating body connected to an outlet end of the first syringe and separating the particles from the fluid; and a container connected to the particle separating body and containing the fluid separated in the particle separating body, wherein the particle separating body includes a rotating body provided with a particle collector collecting the particle and a fluid flow path formed therein, and a fixing body provided with a nozzle discharging the particle and rotatably accommodating the rotating body therein.
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