Title:
削岩機用の伸縮式送りビーム
Document Type and Number:
Japanese Patent JP4307504
Kind Code:
B2
Abstract:
A telescopic feed beam for a rock drill includes a lower beam and an upper beam arranged to move with respect to each other in the longitudinal direction. The cross section of the lower beam is such that there is a groove-like open space at the bottom of the lower beam and a transfer cylinder between the lower beam and the upper beam is mounted in the groove.
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Inventors:
Bormannen, Janne
Piipponen, Juha
Piipponen, Juha
Application Number:
JP2007513988A
Publication Date:
August 05, 2009
Filing Date:
May 30, 2005
Export Citation:
Assignee:
SANDVIK MINING AND CONSTRUCTION OY
International Classes:
E21B19/086; E21B7/02; E21B15/04; E21B
Domestic Patent References:
| JP8284578A | ||||
| JP7233691A |
Foreign References:
| US4251046 |
Attorney, Agent or Firm:
Takao Katori
Koichi Kushida
Koichi Kushida