| 摘要 |
PROBLEM TO BE SOLVED: To simply and easily repair an established foldable indoor fire hydrant using a canvas hose into an easily-operable fire hydrant type 1 using a shape retaining hose in a short period of time at a low cost. SOLUTION: This twin roller unit A comprises a pair of rotatable cylindrical guide rollers having roller shafts 1 inserted therein, a lower-part frame 3 mounted on a bottom board 5a of a storage box 5 of the indoor fire hydrant, and an upper-part frame to be fixed to a hose hanger mounting base 6 fixed to the back board 5b of the storage box 5, and is rotatably supports the pair of guide rollers 2 having the roller shafts 1 inserted therein in line at a fixed interval between the lower-frame 3 and the upper frame 4. This twin roller unit repairs the established indoor fire hydrant. COPYRIGHT: (C)2006,JPO&NCIPI
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