YIELDING ROOF BOLTING S u m m a r y The yielding roof bolting contains a strut in the shape of a pipe forming a capacity (2) liable to expanding with an axial crease in the cavity of which there is a metallic rod (1).
申请公布号
CA2132536(A1)
申请公布日期
1994.07.27
申请号
CA19942132536
申请日期
1994.01.25
申请人
LOGASHKIN, SERGEI A.
发明人
LOGASHKIN, SERGEI A.;BASHKEEV, GENNADY E.;MALYSHEV, JURY N.;MOREVA, ANGELINA G.
