发明名称 |
Percussive augmenter of rotary drills for operating as a rotary-hammer drill |
摘要 |
A percussive augmenter bit includes a connection shaft for mounting the bit onto a rotary drill. In a first modality, an actuator percussively drives the bit, and an electric slip-ring provides power to the actuator while being rotated by the drill. Hammering action from the actuator and rotation from the drill are applied directly to material being drilled. In a second modality, a percussive augmenter includes an actuator that operates as a hammering mechanism that drives a free mass into the bit creating stress pulses that fracture material that is in contact with the bit. |
申请公布号 |
US8640786(B2) |
申请公布日期 |
2014.02.04 |
申请号 |
US20100909653 |
申请日期 |
2010.10.21 |
申请人 |
ALDRICH JACK BARRON;BAR-COHEN YOSEPH;SHERRIT STEWART;BADESCU MIRCEA;BAO XIAOQI;SCOTT JAMES SAMSON;CALIFORNIA INSTITUTE OF TECHNOLOGY |
发明人 |
ALDRICH JACK BARRON;BAR-COHEN YOSEPH;SHERRIT STEWART;BADESCU MIRCEA;BAO XIAOQI;SCOTT JAMES SAMSON |
分类号 |
B25D11/02 |
主分类号 |
B25D11/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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