| 摘要 |
PCT No. PCT/JP82/00224 Sec. 371 Date Feb. 14, 1983 Sec. 102(e) Date Feb. 14, 1983 PCT Filed Jun. 10, 1982.The disclosure describes a lifting apparatus used to raise and lower a device such as a water quality detector installed outdoor. It comprises a cylindrical body in which main elements are contained, a slit formed in the cylindrical body along the axial direction, a movable body having a guide plate which is fitted into the slit and is connected with both ends of a chain, the chain being wound between a sprocket placed at the upper inner portion of the cylindrical body and the sprocket of a driving means so as to be driven to raise or lower to guide plate and the movable body connected to the guide plate.
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