| 摘要 |
PROBLEM TO BE SOLVED: To provide a grating simple in the shape of a necessary mold for production and inexpensive in production cost and its production method. SOLUTION: An end bar 1 has a fitting hole 1a perforated according to the pitch. In both ends of respective bearing bars 2, contact faces 2d, 2e coming into contact with the inside of the end bar 1 and a contact part 2a protruding from the contact face and fitting to the fitting hole 1a is formed. In the contact part 2a, original protrusions 2a, 2c that the bearing bar 2 can be fixed to the end bar 1 are formed. The original protrusions 2b, 2c are caulked from the outside face side of the end bar 1. COPYRIGHT: (C)2003,JPO
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