发明名称 |
A DEVICE FOR LIFTING AND LOWERING |
摘要 |
Power unit that can be telescopically lengthened/shortened and performs linear movement which power unit comprises cylindrical parts (1-3) moving telescopically within each other in which case the mentioned parts are equipped with at least external or internal threads in such a way that the mentioned parts form a power unit that can be lengthened/shortened when the parts are being rotated in relation to each other and that at least one part (3) of the mentioned parts (1-3) is locked to be non-rotating or locked to rotate in a different way than the part (1) of the mentioned parts (1-3) to which part a rotating producing movement to the power unit is arranged. In order to reduce the construction weight of the power unit the mentioned parts (1-3) are made of plastic and of the mentioned parts the inner diameter (d) of the part (3) having the smallest diameter is over 25% of the useful height (H) produced by the mentioned smallest part. |
申请公布号 |
EP2531436(A1) |
申请公布日期 |
2012.12.12 |
申请号 |
EP20110739431 |
申请日期 |
2011.02.04 |
申请人 |
VELVISION OY |
发明人 |
JUSSILA, VELI-MATTI ILARI |
分类号 |
B66F7/14;B66F3/10;B66F11/04 |
主分类号 |
B66F7/14 |
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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