发明名称 Railroad classification yards
摘要 Two car retarders and an interposed means to push the cars are installed on a storage track. The upstream retarder slows the cars. The downstream retarder collects the cars released from the upstream retarder. The cars, coupled as a block, are pushed from the downstream retarder.
申请公布号 US4034677(A) 申请公布日期 1977.07.12
申请号 US19750615378 申请日期 1975.09.22
申请人 ABEX CORPORATION 发明人 FRANK, EARL E.
分类号 B61B1/00;(IPC1-7):B61B1/00 主分类号 B61B1/00
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