| 摘要 |
PROBLEM TO BE SOLVED: To provide shutter equipment manufactured with a simple structure at a low cost. SOLUTION: The shutter equipment is so constituted that a shutter curtain take-up spring 37 forming a multiple winding ring in a free state is mounted on a flexible shutter curtain 26 and that the winding starting end of the shutter curtain is fixed on a rotatable take-up shaft 23. COPYRIGHT: (C)2004,JPO
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