发明名称 SCRAPER CHAIN CONVEYOR ETC.
摘要 The furnishing (13) comprises a wall (25) extending upwardly from an inner edge (26) of the upper flange (22) The wall (25) is formed integrally with a pair of spaced-apart outwardly directed ribs (27,28), which between them define a trapping gap constituting one half of a trapp for an associated haulage rack arrangement (14).
申请公布号 AU6221490(A) 申请公布日期 1991.12.12
申请号 AU19900062214 申请日期 1990.09.06
申请人 PITCRAFT SUMMIT LIMITED 发明人 RICHARD COCKSEDGE
分类号 E21C29/02;E21C35/12 主分类号 E21C29/02
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