A joint having a plurality of bars inserted through apertures into a metal casing adapted to be filled with a grout is disclosed. The casing has projecting members that taper in stepwise fashion from an enlarged portion covering the apertures.
申请公布号
US4902159(A)
申请公布日期
1990.02.20
申请号
US19870002901
申请日期
1987.01.13
申请人
DIPL.-ING. MANFRED BEER
发明人
FRANTL, ERICH;HOFSTAETTER, PETER;ZEMLER, WILLIBALD;RAUNICHER, ALBERT P.;FRANTL, WERNER