Self drilling anchor

A self-drilling one-piece anchor installable in a wall by means of torque-producing tool and adapted, after being installed in the wall, to receive and engage a fastener to hold an object adjacent the wall, said anchor comprising:

• (a) an externally-threaded shank section adapted to receive the tool for turning the anchor into a wall in which the anchor is to be installed, the shank having a longitudinal bore for receiving and engaging said fastener to hold said object;
• and
• (b) a core drill section integral with the shank section and extending therefrom for drilling an annular opening in the wall in which the anchor is to be installed surrounding a removable core of wall material to define a hole which is tapped by the shank section to secure the anchor to the wall, the core drill section having a longitudinal passage therein generally aligned with the bore of the shank section to permit said fastener to advance beyond said shank into and out of said passage.

A self-drilling, one-piece anchor installable in a wall by means of torque-producing tool and adapted, after being installed in the wall, to receive and engage a fastener to hold an object adjacent the wall, said anchor comprising:

• (a) an externally-threaded shank section adapted to receive the tool for turning the anchor into a wall in which the anchor is to be installed, the shank having a longitudinal bore for receiving and engaging said fastener to hold said object;
• and
• (b) at least two cutting teeth in spaced relation integral with the shank section and extending therefrom to drill a hole in the wall which is tapped by the shank section to secure an anchor to the wall in which the anchor is to be installed, and a longitudinal passage extending axially between the teeth and generally aligned with the bore of the shank section to permit said fastener to advance beyond the shank section into and out of said passage.

A self-drilling, one-piece anchor installable in a wall by means of a torque-producing tool in combination with a fastener, said anchor being adapted, after being installed in the wall, to receive and engage said fastener to hold an object adjacent the wall, said anchor comprising:

• (a) an externally-threaded shank section adapted to receive the tool for turning the anchor into a wall in which the anchor is to be installed, the shank having a longitudinal bore for receiving and engaging said fastener to hold said object adjacent said wall;
• and
• (b) drill means extending from the shank section for drilling a hole in the wall in which the anchor is to be installed which is tapped by the shank section to secure the anchor to the wall, said drill means having a passage therein having a leading portion provided with an opening communicating with the bore of the shank section to permit said fastener to advance beyond said shank section into and out of said passage.

The combination of a self-drilling anchor installable in a hollow wall by means of a torque-producing tool and a threaded fastener received in the anchor and engaged thereby to hold an object adjacent the wall, said anchor comprising:

• (a) an externally-threaded shank section adapted to receive the tool for turning the anchor into a wall in which the anchor is to be installed, the shank section having a longitudinal bore receiving the threaded fastener and tapped thereby to engage the fastener holding said object;
• and
• (b) drilling means integral with the shank section and extending therefrom for drilling a hole of uniform diameter in the wall in which the anchor is to be installed which is tapped by the shank section to secure the anchor to the wall, said drilling means having a passage therein having a leading portion provided with an opening communicating with the bore in said shank section to permit said fastener received in the shank section to advance therebeyond into said passage.