Indirect fastening of rails by using tie-plates or chairs; Fastening of rails on the tie-plates or in the chairs

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Fastening rails on sleepers, or the like (fastening rails to bridges E01D19/12) > Indirect fastening of rails by using tie-plates or chairs; Fastening of rails on the tie-plates or in the chairs

Child Classifications

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• E01B 9/40 Tie-plates for flat-bottom rails (manufacture B21)
• E01B 9/44 Fastening the rail on the tie-plate
• E01B 9/54 Rail chairs
• E01B 9/58 Fastening the rail in the chair