发明名称 |
Shock absorbing bit retaining ring |
摘要 |
A percussion tool assembly, such as a rock drill assembly, with a new and useful split retaining ring for maintaining the drill bit in the drill assembly. The split retaining ring has a Belleville spring-like profile to enable the split retaining ring to deflect resiliently when the drill bit is driven into engagement with the split retaining ring. The split retaining ring functions as a conventional retaining ring and also as a shock absorber to absorb surplus energy not completely used in the drilling of rock or other strata.
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申请公布号 |
US4924948(A) |
申请公布日期 |
1990.05.15 |
申请号 |
US19880271293 |
申请日期 |
1988.11.15 |
申请人 |
SANDVIK ROCK TOOLS, INC. |
发明人 |
CHUANG, JO-YU;FRITSCH, EDWARD V. |
分类号 |
B25D17/24;E21B4/14;E21B10/36;E21B17/07 |
主分类号 |
B25D17/24 |
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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