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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2019/004651
Kind Code:
According to the present invention, a main body housing is divided into two spaces provided with first and second pistons, respectively, wherein the first piston is provided, between driving parts, in an upper space inside the main body housing, and the second piston is provided in a lower space inside the main body housing. The first and second pistons are connected by a main shaft such that a blade can be lifted or lowered by even a small amount of pressure, and thus driving efficiency is enhanced and the energy required for driving can be reduced.

KIM, Bae Jin (70 Deogyeong-daero 639beon-gil, Jangan-gu,Suwon-si, Gyeonggi-do, 16318, KR)
CHOI, Ki Sun (201 ho, 2nd Floor 26-10, Dongtanbansong 1-gil,,Hwaseong-si, Gyeonggi-do, 18434, KR)
LEE, Su Yeon (201 ho, Na dong 3, Beolteo-ro 14beon-gil, Gwonseon-gu,,Suwon-si, Gyeonggi-do, 16619, KR)
Application Number:
Publication Date:
January 03, 2019
Filing Date:
June 21, 2018
Export Citation:
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PRESYS.CO., LTD (1433-64, Seobu-ro Gwonseon-gu,Suwon-si, Gyeonggi-do, 16643, KR)
International Classes:
F16K31/122; F16K3/02; F16K3/314; F16K51/02
Attorney, Agent or Firm:
STYP PATENT LAW FIRM (B-201, Woolim Lions Valley 168, Gasan digital 1-ro,Geumcheon-gu, Seoul, 08507, KR)
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