Title:
騒音を減衰するためのデバイス及び削岩リグ
Document Type and Number:
Japanese Patent JP7324080
Kind Code:
B2
Abstract:
A noise dampening device (12) for a rock drilling rig comprise a skin structure (14) and a frame (20) to be attached to the feed beam of the drilling rig. The skin structure comprises several noise dampening panels (13) which are mounted to the frame in a removable manner.
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Inventors:
Luoma, Lassi
Shivra, Sampo
Shivra, Sampo
Application Number:
JP2019140494A
Publication Date:
August 09, 2023
Filing Date:
July 31, 2019
Export Citation:
Assignee:
Sandvik Mining and Construction Owai
International Classes:
E21B6/00
Domestic Patent References:
| JP5295978A | ||||
| JP51089699U | ||||
| JP51136505U | ||||
| JP6085055A | ||||
| JP2013503990A |
Attorney, Agent or Firm:
Sonoda & Kobayashi Patent Attorneys Corporation