| 发明名称 |
Hole saw |
| 摘要 |
A new and improved hole saw construction providing a low cost hole saw mandrel with improved driving capability. A unique drive washer cooperates with radial stiffening ribs on a hole saw blade to effect the improved driving capability.
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| 申请公布号 |
US4422811(A) |
申请公布日期 |
1983.12.27 |
| 申请号 |
US19810225849 |
申请日期 |
1981.01.16 |
| 申请人 |
INGERSOLL-RAND COMPANY |
发明人 |
ELLISON, BRUCE;DECARTERET, JAMES A. |
| 分类号 |
B23B51/04;(IPC1-7):B23B51/04 |
主分类号 |
B23B51/04 |
| 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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