Title:
HYDRAULIC BREAKER WITHOUT BACK HEAD
Document Type and Number:
WIPO Patent Application WO/2023/277470
Kind Code:
A1
Abstract:
The present invention pertains to an assembly structure without a back head, the structure having a block built as a polyhedron. To this end, the present invention, pertaining to an assembly structure without a back head, fills a compressed gas in a space inside the polyhedral block. The present invention pertains to a hydraulic breaker without a back head, comprising a main control valve, to which fluid is supplied from the outside of the polyhedron, and accommodating a pilot valve for controlling the main control valve, in the interior space of the polyhedron, and in which impact force is obtained by double-acting cylinders, operated by the main control valve, moving modules that are connected to piston rods backwards and forwards, thus moving an integrated impact ram and ram block module forward, and filled compressed gas rapidly pulling back the integrated impact ram and ram block module.
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Inventors:
CHOI EOM JI (KR)
CHOI SEONG GYU (KR)
CHOI SEONG GYU (KR)
Application Number:
PCT/KR2022/009091
Publication Date:
January 05, 2023
Filing Date:
June 27, 2022
Export Citation:
Assignee:
CHOI EOM JI (KR)
International Classes:
E02F3/96; E02F5/30; E02F9/22; F15B13/02
Foreign References:
| JPH0624422Y2 | 1994-06-29 | |||
| JPS605916A | 1985-01-12 | |||
| JPH0136987Y2 | 1989-11-09 | |||
| JPS6147932B2 | 1986-10-22 | |||
| KR100931812B1 | 2009-12-14 | |||
| KR100820644B1 | 2008-04-08 |
Attorney, Agent or Firm:
HAEDAM IP GROUP (KR)
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