| 发明名称 |
Hole cutting apparatus utilizing a cylinder saw |
| 摘要 |
An apparatus for cutting a hole through the sidewall of a longitudinally extending pipe is disclosed herein. This apparatus includes a cylinder saw, i.e., a hole saw and a portable jig for supporting and guiding the saw during the hole cutting operation.
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| 申请公布号 |
US4152090(A) |
申请公布日期 |
1979.05.01 |
| 申请号 |
US19770835607 |
申请日期 |
1977.09.22 |
| 申请人 |
JOHNS-MANVILLE CORP |
发明人 |
HARRIS, ALLAN;HUFF, LEMUEL H |
| 分类号 |
B23B47/28;B25H1/00;(IPC1-7):B23B47/28;B23B41/00 |
主分类号 |
B23B47/28 |
| 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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