Invention Grant
US08640786B2 Percussive augmenter of rotary drills for operating as a rotary-hammer drill
有权
旋转钻机的冲击增强器作为旋转锤钻机操作
- Patent Title: Percussive augmenter of rotary drills for operating as a rotary-hammer drill
- Patent Title (中): 旋转钻机的冲击增强器作为旋转锤钻机操作
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Application No.: US12909653Application Date: 2010-10-21
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Publication No.: US08640786B2Publication Date: 2014-02-04
- Inventor: Jack Barron Aldrich , Yoseph Bar-Cohen , Stewart Sherrit , Mircea Badescu , Xiaoqi Bao , James Samson Scott
- Applicant: Jack Barron Aldrich , Yoseph Bar-Cohen , Stewart Sherrit , Mircea Badescu , Xiaoqi Bao , James Samson Scott
- Applicant Address: US CA Pasadena
- Assignee: California Institute of Technology
- Current Assignee: California Institute of Technology
- Current Assignee Address: US CA Pasadena
- Agency: Gates & Cooper LLP
- Main IPC: B25D11/02
- IPC: B25D11/02

Abstract:
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.
Public/Granted literature
- US20110094765A1 PERCUSSIVE AUGMENTER OF ROTARY DRILLS FOR OPERATING AS A ROTARY-HAMMER DRILL Public/Granted day:2011-04-28
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