Patent ID: 6457922
Filing Date: 2002-10-01
Classification: F16B

Abstract:
An expansion bolt assembly adapted to be installed on a wall that is formed with a bore, comprising:an elongated bolt body formed with an externally threaded shank portion that is adapted to be inserted into the bore, and a head portion that extends from said shank portion and that is adapted to extend out of the bore and to project from the wall, said head portion being formed with an internally threaded hole; a tubular expansion sleeve sleeved on said shank portion and having a proximate section adjacent to said head portion, and a distal section opposite to said proximate section and formed with a plurality of axially extending slits, said sleeve cooperating with said shank portion to confine an annular expansion chamber therebetween; a nut engaging threadedly said shank portion adjacent to said distal section of said sleeve, said nut being formed with a taper section that extends into said expansion chamber when said bolt body is driven to rotate relative to said nut, thereby forcing said distal section of said sleeve to expand so as to be adapted to frictionally engage a bore-defining surface of the wall; a washer sleeved on said shank portion and further adapted to be clamped between said head portion and said wall; and a hook member threadedly engaging said hole.