Title:
打撃装置
Document Type and Number:
Japanese Patent JP4898780
Kind Code:
B2
Abstract:
A method for controlling the operation of a pressure fluid operated percussion device and to a pressure fluid operated percussion device. The method includes influencing the shape of a stress wave by setting a suitable clearance between a transmission piston and a tool. The percussion device is provided with a device for setting the clearance between the transmission piston and the tool.
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Inventors:
Keskiniva, Maluk
Maki, Yoruma
Esco, Mauri
Ahora, Erikki
Maki, Yoruma
Esco, Mauri
Ahora, Erikki
Application Number:
JP2008502431A
Publication Date:
March 21, 2012
Filing Date:
March 22, 2006
Export Citation:
Assignee:
SANDVIK MINING AND CONSTRUCTION OY
International Classes:
B25D9/26; E21B1/32
Domestic Patent References:
| JPS6272074A | 1987-04-02 | |||
| JPS62218081A | 1987-09-25 | |||
| JPH02298475A | 1990-12-10 | |||
| JP2004533340A | 2004-11-04 |
Attorney, Agent or Firm:
Takao Katori