| 摘要 |
PROBLEM TO BE SOLVED: To provide a rail for a door roller which is easy to be laid while avoiding transmission of a sound produced by a door roller rolling on the door-roller rail directly to a floor or a doorsill. SOLUTION: The rail, having a door-roller rolling groove on the top face and a shock absorbing material such as rubber integrated at the lower part, is stored in a casing. COPYRIGHT: (C)2006,JPO&NCIPI
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