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Patent Searching and Data


Title:
HYDRAULIC BREAKER PISTON
Document Type and Number:
WIPO Patent Application WO/2021/015364
Kind Code:
A1
Abstract:
The present invention provides a hydraulic breaker piston that is installed in a cylinder of a hydraulic breaker, ascends and descends by hydraulic pressure, and hits a chisel, the hydraulic breaker piston comprising: a connection shaft part extending along the central axis of an upper end of the piston; a plurality of absorption blade plates radially coupled and installed around the outer circumference of the connection shaft so as to be spaced apart from each other at regular intervals, and extending in a direction perpendicular to the piston so as to convert vibration and impact repulsive force transmitted to the piston when the piston hits the chisel into a vertical bending motion and absorb same; a plurality of bending extension parts extending vertically from an outer end of each of the absorption blade plates, and increasing the vertical bending motion of the absorption blade plates when hitting the chisel; and an absorption connection part inserted and installed outside the bending extension parts so as to interconnect the plurality of bending extension parts, and having an elastic force in the form of a ring that absorbs expansion energy during the bending motion of the absorption blade plates.

More Like This:
WO/2022/055219HYDRAULIC BREAKER CHISEL
Inventors:
JEONG MUN GYO (KR)
JUNG YOUNG JAE (KR)
Application Number:
PCT/KR2019/014464
Publication Date:
January 28, 2021
Filing Date:
October 30, 2019
Export Citation:
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Assignee:
MAPP CO LTD (KR)
International Classes:
E02F3/96; E02F9/22
Foreign References:
KR20120005908A2012-01-17
KR20090119614A2009-11-19
KR19980045584U1998-09-25
US20130255245A12013-10-03
KR102031090B12019-10-11
Attorney, Agent or Firm:
TAEBAEK INTELLECTUAL PROPERTY LAW FIRM (KR)
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