Title:
LOW-NOISE HYDRAULIC HAMMER
Document Type and Number:
WIPO Patent Application WO/2015/080439
Kind Code:
A1
Abstract:
The present invention relates to a hydraulic hammer, and more specifically, to a low-noise hydraulic hammer, wherein an impact bar that is accommodated inside of a piston is inclined so as not to contact the inside of the piston thereby preventing cracks, and a noise insulating material or a heat sink is installed inside the piston or outside the impact bar, thereby reducing noise and improving heat radiation performance.
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Inventors:
KIM SUNG KEW (KR)
Application Number:
PCT/KR2014/011293
Publication Date:
June 04, 2015
Filing Date:
November 21, 2014
Export Citation:
Assignee:
S M METAL CO LTD (KR)
International Classes:
E21B1/24; E21B1/36
Domestic Patent References:
| WO2013085394A1 | 2013-06-13 |
Foreign References:
| KR100906468B1 | 2009-07-08 | |||
| KR101179956B1 | 2012-09-07 | |||
| KR20090022475A | 2009-03-04 |
Other References:
See also references of EP 3075945A4
Attorney, Agent or Firm:
MIN, DONG SIK (KR)
민동식 (KR)
민동식 (KR)
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