发明名称 |
UNIVERSAL TAP JACK |
摘要 |
A drilling device comprises a tubular body portion having annular collar slidably mounted thereon so that the body can freely rotate within the collar and a drill rod is secured to one end of the body. A universal connection at the other end of the body is provided for attachment thereof to drill rotating means and a handle member is pivotally secured to the anular collar for manually directing the device.
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申请公布号 |
US3700347(A) |
申请公布日期 |
1972.10.24 |
申请号 |
USD3700347 |
申请日期 |
1970.12.07 |
申请人 |
ALGAMA STEEL CORP. LTD.:THE |
发明人 |
SILVIO EDWARD NANNE;RENVILLE O. MOODY |
分类号 |
B23Q5/04;B23Q5/54;C21B7/12 |
主分类号 |
B23Q5/04 |
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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