发明名称 Aligning bracket for underground sectional precast concrete structures and method of assembly
摘要 An alignment bracket used in combination with an extendible pole having a hooked end provides lateral and rotational alignment for the interengagement of precast concrete sections of underground concrete structures during their construction, eliminating the need for workmen to enter an excavation for this purpose. The bracket is moved by the pole after each section is positioned to provide alignment for the next section. During alignment the sections can be moved both rotationally and laterally by workmen applying force on the bracket with the pole.
申请公布号 US4021979(A) 申请公布日期 1977.05.10
申请号 US19760698460 申请日期 1976.06.21
申请人 ASSOCIATED CONCRETE PRODUCTS, INC. 发明人 REZ, DONALD H.
分类号 E02D27/00;E04G21/16;E04G21/26;(IPC1-7):E02D35/00;E04B1/35 主分类号 E02D27/00
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