发明名称 |
Apparatus for screening and trowelling concrete |
摘要 |
Disclosed is an apparatus for screeding or trowelling concrete or similar materials. The apparatus has a turret, mounted on a mobile frame. A telescopic boom is mounted in cantilevered fashion on the turret. A machine head, mounted on the distal end of the boom, is rotatable about a vertical axis. An attachment, such as a screed or a trowel, is attached to the machine head. The level and angle of the frame can be set to a selected elevation relative to a rotating laser beam by raising or lowering three hydraulic legs. The machine head can raise or lower the attachment to set the attachment at a selected elevation.
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申请公布号 |
US5039249(A) |
申请公布日期 |
1991.08.13 |
申请号 |
US19890395599 |
申请日期 |
1989.08.18 |
申请人 |
HANSEN, JOEL D.;HANSEN, MELOY F. |
发明人 |
HANSEN, JOEL D.;HANSEN, MELOY F. |
分类号 |
E01C19/40;E04F21/24 |
主分类号 |
E01C19/40 |
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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