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Patent Searching and Data


Title:
HYDRAULIC-PNEUMATIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/190274
Kind Code:
A1
Abstract:
A hydraulic-pneumatic device according to one embodiment of the present invention comprises: an outer cylinder; an inner cylinder; a piston which has a fixed mode and a motion mode and can thus reciprocate relative to the inner cylinder in the motion mode; and a free piston which divides a space between the outer cylinder and the inner cylinder into a first chamber and a second chamber and can reciprocate in the space between the outer cylinder and the inner cylinder, wherein a third chamber, namely an inner space of the inner cylinder, is filled with a liquid and when the piston moves toward one end of the inner cylinder in the motion mode, at least some of the liquid received in the third chamber moves to the first chamber or the second chamber.

Inventors:
AN, Jin Hyung (402-1901, 34 Nongogae-ro 68beon-gil,Namdong-gu, Incheon, 21667, KR)
Application Number:
KR2019/003729
Publication Date:
October 03, 2019
Filing Date:
March 29, 2019
Export Citation:
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Assignee:
SAMHONGSA CO., LTD. (Rm. 1201, 14 Gasan digital 2-ro,Geumcheon-gu, Seoul, 08592, KR)
International Classes:
F16F9/06; A47B91/00; A47C7/00
Foreign References:
KR20150088439A2015-08-03
JP2980616B21999-11-22
KR20170050067A2017-05-11
KR20070113701A2007-11-29
JP2009156348A2009-07-16
Attorney, Agent or Firm:
Y.P.LEE, MOCK & PARTNERS (12F Daelim Acrotel, 13 Eonju-ro 30-gilGangnam-gu, Seoul, 06292, KR)
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