Invention Grant
- Patent Title: Percussion device with a transmission element compressing an elastic energy storing material
- Patent Title (中): 具有压缩弹性储能材料的传动元件的冲击装置
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Application No.: US11819304Application Date: 2007-06-26
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Publication No.: US07441608B2Publication Date: 2008-10-28
- Inventor: Markku Keskiniva , Erkki Ahola , Ari Kotala
- Applicant: Markku Keskiniva , Erkki Ahola , Ari Kotala
- Applicant Address: FI Tampere
- Assignee: Sandvik Mining and Construction Oy
- Current Assignee: Sandvik Mining and Construction Oy
- Current Assignee Address: FI Tampere
- Agency: Drinker Biddle & Reath LLP
- Priority: FI20020881 20020508; WOPCT/FI03/00354 20030507
- Main IPC: B25D9/00
- IPC: B25D9/00
Abstract:
A percussion device for a rock drilling machine or the like, which includes providing an impact, i.e. a stress pulse, to a tool connected to the percussion device. The the stress pulse is provided by way of a stress element of liquid, which is supported to a body of the percussion device. The stress element is subjected to pressure and correspondingly the stress element is released abruptly, whereby the stress energy is discharged as a stress pulse to the tool in direct or indirect contact with the stress element.
Public/Granted literature
- US20070246236A1 Percussion device with a transmission element compressing an elastic energy storing material Public/Granted day:2007-10-25
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