Title:
衝撃装置
Document Type and Number:
Japanese Patent JP4202248
Kind Code:
B2
Abstract:
An impact device for a rock drill. The rock drill includes a tool and a mechanism for delivering a stress pulse to the tool. That mechanism includes an impact element supported to a frame of the drill, and a mechanism for subjecting the impact element to stress and thereafter releasing the impact element suddenly from the stress, whereupon stored stress energy in the impact element is discharged in the form of a stress pulse directed at the tool.
Inventors:
Keskiniva, Maluk
Maki, Yoruma
Ahora, Elkki
Lantala, bait
Maki, Yoruma
Ahora, Elkki
Lantala, bait
Application Number:
JP2003510566A
Publication Date:
December 24, 2008
Filing Date:
July 01, 2002
Export Citation:
Assignee:
SANDVIK TAMROCK OY
International Classes:
B25D9/14; B25D9/00; E21B1/02; E21B1/36
Domestic Patent References:
| JP53137509A | ||||
| JP11182170A | ||||
| JP64087165A |
Foreign References:
| GB2328342A | ||||
| WO1997026090A1 |
Attorney, Agent or Firm:
Takao Katori
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