Hollow wall fastener
OwnerGreg M. Crowinventor
Life of this patent
Estimating the term…
Abstract
Improvements in a hollow wall fastener that uses a cylindrical outer casing with an outer lip to distribute vertical load stress to the wall more efficiently by reducing high-load stress points and centering mass nearer the wall. The fastener uses arms that deploy and install in a reaching and spreading motion that allows the center of tension and load to remain closer to the wall. The housing uses channeled grooves that align the arms with the cylindrical outer casing. The fastener is adjustable prior to installation to set the thickness of the wall for an optimal grip. The arms secure the fastener by direct pressure applied from opposite directions along the z-axis, perpendicular to the interior wall. The arms can be retracted back into the cylindrical outer housing for removal of the fastener from the wall, ceiling, or floor.
Claims13
A hollow wall fastener comprising:
- a hollow body having a flange at a first end;
- said hollow body having a second end that is configured to pass into a hollow wall;
- an anvil that is configured to pass into said second end of said hollow body;
- an arm base having a plurality of articulating arms that are configured to pass at least partially through corresponding holes in said hollow body,
- wherein said anvil and said arm base with said plurality of articulating arms are configured to push said articulating arms out to spread said plurality of articulating arms out through said corresponding holes in said hollow body to clamp said hollow body onto said hollow wall;
- at least one screw-nut that is securable to said arm base;
- wherein said anvil has a body recess for each articulating arm that clamps each articulating arm into said arm base;
- and
- wherein each articulating arm and said base are driven together by said at least one screw-nut.
Dependencies are inferred from the claim text.