发明名称 |
MAINTENANCE AND EXTRACTION OF POLES |
摘要 |
An apparatus for excavation of earth around a pole embedded in an earth surface comprises a hollow auger (19) in the form of a cylindrical drum (21) with a helical flight (22) about the outer wall thereof. The hollow auger (19) is constructed in two halves to enable movement between an open position and a closed position embracing the pole. The hollow auger (19) is rotatably journalled in a support frame (15) and is driven by a drive motor (20) engaging a spur gear (26) around the upper position of the auger (19). The support frame (15) is slidably mounted on a frame (10) to enable extension and retraction of the auger (19). |
申请公布号 |
WO9218705(A1) |
申请公布日期 |
1992.10.29 |
申请号 |
WO1992AU00169 |
申请日期 |
1992.04.16 |
申请人 |
POLEMATE PTY. LTD. |
发明人 |
CAHILL, GAVIN, JOHN;LOUSICK, RONALD, WILLIAM;FALKENHAGEN, ERIC, ALAN |
分类号 |
E04H12/22;E04H12/34;E04H17/26;E21B7/00;E21B7/28;E21B10/44 |
主分类号 |
E04H12/22 |
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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