Screw-type anchor
AssigneePowers Fasteners, Inc.
InventorsJeffrey R. Powers, Paul Gaudron
Life of this patent
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Abstract
A self-tapping masonry anchor includes an axial bore that is formed at one end and extends through a portion of the anchor.
Claims20
An integrally formed, self tapping masonry anchor having a length extending between a first end and second end of the anchor, the anchor being insertable in a masonry hole using a tool, comprising:
- a helical thread of the type suited for tapping masonry, the thread extending from the first end to a first intermediate station disposed between the first and second ends;
- an axial bore adapted for releasably engaging an anchor inserting tool, the bore being formed at the second end, extending into the anchor and terminating at a second intermediate station that is one of approximately coincident with the first intermediate station and between the first intermediate station and the first end.
A method for forming a self-tapping masonry anchor from a cylindrical blank, the blank having a first and second end defining a longitudinal extent of the blank, comprising the steps of:
- forming an axial bore extending from the first end and terminating at a first intermediate station disposed between the first and second ends;
- and
- forming a thread by rolling, the thread extending from the second end to a second intermediate station, the second intermediate station being one of approximately coincident with the first intermediate station and between the first intermediate station and the first end.
A method for inserting a self tapping masonry anchor in a masonry hole having a hole opening, the masonry anchor having formed thereon a helical threading of the type suited for tapping masonry, the anchor having first and second ends defining the longitudinal extent of the anchor, and an axial bore is formed in the anchor, comprising the steps of:
- engaging an anchor inserting tool with the bore;
- driving the anchor into the masonry hole until the second end is one of approximately flush with the hole opening and disposed below the hole opening;
- and
- removing the tool from the bore including pulling the tool out of the bore.
A masonry anchor that is embedded in a hole, comprising:
- a first anchor portion including a helical threading formed thereon, the thread being embedded in a helical groove of the hole formed by the thread as the anchor is driven into the hole by the tool;
- and
- a second anchor portion extending from the first portion to a location that is one of approximately flush with and recessed within the masonry hole, the second portion having formed therein an axial bore including a plurality of axially extending, opposed planar walls for releasably engaging a tool.
An anchor for coupling a mounting structure to masonry by engagement of a fastener of the mounting structure to the anchor, the anchor having first and second ends defining a longitudinal extent of the anchor, comprising:
- a solid portion extending from the first end and terminating at an intermediate station located between the first and second ends;
- a hollow portion defined by an axial bore extending from the second end to the intermediate station, wherein a first bore portion defines a tool engagement for releasably engaging an anchor inserting tool, and a second bore portion for releasably securing a structure to the anchor;
- and
- a helical thread of the type suited for tapping masonry, the thread extending over a length that is no less than approximately the longitudinal extent of the solid portion.
Dependencies are inferred from the claim text.