Anchor member with electrical insulation jacket

Anchor member securable in a hardenable mass in an axially extending borehole in a receiving material, comprising an axially extending metal core member having a leading end in the direction said anchor member is inserted into the borehole and a trailing end, said core member having an axially extending connecting thread, a jacket enclosing said core member in the axial direction thereof from the leading end at least for an axially extending section toward the trailing end, said jacket is formed of an electrically non-conductive plastics material at least in an axially extending section of said jacket to be located within the receiving material, wherein the improvement comprises a stop centerd at the leading end of said jacket on an extension of the axis of said core member and said stop arranged to abut at the base of the borehole approximately along the axis of the borehole, said stop is in the form of a lug-like projection extending from the leading end of said jacket and located along the projection of the axis of said core member.

Anchor member securable in a hardenable mass in an axially extending borehole in a receiving material, comprising an axially extending metal core member having a leading end in the direction said anchor member is inserted into the borehole and a trailing end, said core member having an axially extending connecting thread, a jacket enclosing said core member in the axial direction thereof from the leading end at least for an axially extending section toward the trailing end, said jacket is formed of an electrically non-conductive plastics material at least in an axially extending section of said jacket to be located within the receiving material, wherein the improvement comprises a stop centered at the leading end of said jacket on an extension of the axis of said core member and said stop arranged to abut at the base of the borehole approximately along the axis of the borehole, said core member is a threaded sleeve with a closed leading end and said connecting thread is an internal thread located within said sleeve.

Anchor member securable in a hardenable mass in an axially extending borehole in a receiving material, comprising an axially extending metal core member having a leading end in the direction said anchor member is inserted into the borehole and a trailing end, said core member having an axially extending connecting thread, a jacket enclosing said core member in the axial direction thereof from the leading end at least for an axially extending section toward the trailing end, said jacket is formed of an electrically non-conductive plastics material at least in an axially extending section of said jacket to be located within the receiving material, wherein the improvement comprises a stop centered at the leading end of said jacket on an extension of the axis of said core member and said stop arranged to abut at the base of the borehole approximately along the axis of the borehole, said jacket has a plurality of axially spaced circumferentially extending ridge-like ribs on the radially outer surface of said jacket with said ribs having an arrow-head-like configuration directed towards the leading end thereof.

Anchor member securable in a hardenable mass in an axially extending borehole in a receiving material, comprising an axially extending metal core member having a leading end in the direction said anchor member is inserted into the borehole and a trailing end, said core member having an axially extending connecting thread, a jacket enclosing said core member in the axial direction thereof from the leading end at least for an axially extending section toward the trailing end, said jacket is formed of an electrically non-conductive plastics material at least in an axially extending section of said jacket to be located within the receiving material, wherein the improvement comprises a stop centered at the leading end of said jacket on an extension of the axis of said core member and said stop arranged to abut at the base of the borehole approximately along the axis of the borehole, the leading end of said jacket has a pyramidally-shaped surface with the apex of said pyramidally-shaped surface located approximately on the projection of the axis of said core member.