US 6,186,716 B1 · Anchor bolt

Abstract

An anchor bolt is provided which includes a head, a drill portion, and an intermediate shank portion. The intermediate shank portion has a longitudinal cavity formed therein for receiving a mounting set screw. An external thread is formed on the shank portion for threading the anchor bolt into the wall. The shank portion is divided by a slit into at least one portion and the external thread on the shank portion is divided into a plurality of discrete thread segments by the slit. The drill portion has a cutting edge and at least one flute formed therein which also extends to a drill tip and to a sharpened point. The anchor bolt is driven into the wall portion with a screwdriver, and then a mounting set screw is inserted into the longitudinal cavity. When the mounting set screw is inserted into the cavity, the set screw causes a portion of the shank portion to separate from the shank portion to engage with the wall.

Claims14

Dependent claims

An anchor bolt comprising:

a head having a through-hole therein, the through-hole adapted to receive a screwdriver therein;
a shank having a first end and a second end, the shank extending from the head at said first end to a drill portion at said second end, the shank having at least one area of weakness wherein at least a portion of the shank is adapted to separate proximate the head, the shank having a longitudinal cavity therein, said longitudinal cavity adapted to receive a set screw therein;
an external helical thread on the shank extending between the head and the drill portion;
and
the drill portion having a cutting edge and at least one helical flute;
and
where the anchor bolt is adapted to be self-tapping.

4 more elements

Dependencies are inferred from the claim text.

Anchor bolt

Life of this patent

Anchor bolt

Life of this patent

Abstract

Claims14