Rotation unit, rock drilling unit and method for rock drilling

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United States of America Patent

PATENT NO 9951559
SERIAL NO

14879289

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A rotation unit includes a main shaft that is rotated around its longitudinal axis by a rotating motor. The main shaft includes a tubular outer shaft and an inner shaft arranged inside the outer shaft. The outer shaft is supported by a body of the rotation unit and is arranged to transmit axial forces, whereas the inner shaft is arranged to transmit rotation and torque. A rock drilling unit and method for rock drilling is also provided.

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Patent Owner(s)

Patent OwnerAddress
SANDVIK MINING AND CONSTRUCTION OYPIHTISULUNKATU 9 TAMPERE 33330

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ukonjärvi, Tapio Tampere, FI 1 2

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