IP Library Granted Patent US 12667949
Granted Patent B2
US 12667949 · App. 18/072,893 · Granted Jun 30, 2026

Sound suppressing device attachment for tools

Inventors: Zachary Coulson (Oklahoma City, OK); Bradley Sullivan (Shawnee, OK)
Assignee: United States of America as represented by the Secretary of the Air Force
B25D17/11B25D9/04B25D2250/365B33Y80/00
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Quick Facts
Patent No.
US 12667949
App. No.
18/072,893
Granted
Jun 30, 2026
Kind
B2
Abstract

A sound suppressing device for reducing the sound made when using a piece of equipment or tool is disclosed. The sound suppressing device includes: an outer shell, a window in the top of the outer shell, a filler inside the outer shell, and a containment seal for the filler. The sound suppressing device has an opening extending between its top and bottom that is sized and configured to fit around a portion of the body of the tool that will be adjacent the work piece when the tool is in use.

Claims (13)

1 . A sound suppressing device for reducing the sound made when using a tool, which tool has a body and a functional part for interacting with a work surface, said device comprising:

a three-dimensional shell having an upper surface, a lower surface, an interior, and an outer wall, wherein the shell has an opening therein that extends between its upper surface and its lower surface, wherein the opening is sized and configured to fit around a portion of the body of the tool that will be adjacent the work surface when the tool is in use, wherein the upper surface of the shell is configured to be oriented further from the work surface than the lower surface;

a set of window layers in its upper surface that surrounds said opening so that a person using the sound suppressing device can see the work surface through said window layers, wherein said set of window layers comprises three transparent material layers comprising a top window layer, a middle window layer, and a bottom window layer, wherein said middle window layer is positioned between said top window layer and said bottom window layer and is unsecured to any portion of the sound suppressing device so that it is allowed to move freely between said top window layer and said bottom window layer;

at least one compartment located in the interior of said shell, wherein one compartment is located between the outer wall of said shell and at least one inner wall joined to the interior of said shell;

a filler material inside said at least one compartment; and

a containment seal joined to the lower surface of said shell,

wherein the sound suppressing device is configured so that the containment seal is positioned against the work surface when the sound suppressing device is in use so that said sound suppressing device suppresses noise generated between the functional part of a tool and the work surface.

2 . A sound suppressing device for reducing the sound made when using a tool, which tool has a body and a functional part for interacting with a work surface, said device comprising:

an inverted bowl-shaped, three-dimensional shell having an upper surface, a lower surface, an interior, and an outer wall, wherein the shell has an opening therein that extends between its upper surface and its lower surface, wherein the opening is sized and configured to fit around a portion of the body of the tool that will be adjacent the work surface when the tool is in use, wherein the upper surface of the shell is configured to be oriented further from the work surface than the lower surface;

a set of window layers in the upper surface of said shell that surrounds the opening in said shell so that a person using the sound suppressing device can see the work surface through said window, wherein said set of window layers comprises three layers comprising: a top window layer, a middle window layer, and a bottom window layer, wherein said middle window layer is positioned between said top window layer and said bottom window layer and is unsecured to any portion of the sound suppressing device so that it is allowed to move freely between said top window layer and said bottom window layer;

a plurality of compartments located in the interior of said shell, said compartments comprising a first compartment that is located between the outer wall of said shell and a first inner wall and a second compartment that is located between the first inner wall and a second inner wall, wherein said first and second inner walls are joined to the underside of the upper portion of the shell on the interior of the shell, wherein said first and second inner walls have a configuration similar to the exterior wall of the shell, wherein at least a portion of said shell comprises a 3D printed structure with a gyroid infill, wherein said at least a portion of said shell that comprises a 3D printed structure with a gyroid infill comprises at least a portion of said second inner wall and an upper portion of the shell that is disposed above said compartments when said device is place on a work surface, wherein said gyroid infill is a non-typically spaced gyroid infill which comprises a plurality of spaced apart walls therein with convoluted channels therebetween, which is configured to increase the convolution of the channels inside the gyroid structure while still keeping the walls of the gyroid structure relatively separate;

a filler material inside said compartments, wherein said filler is an energy-absorbing material; and

a containment seal that is joined to the lower surface of said shell, wherein the containment seal comprises a ring-like disk having an inner surface, an outer surface, a central opening therein, and a plurality of spaced-apart upwardly-oriented walls extending along the inner surface of the containment seal, wherein said first and second inner walls of said shell have ends that fit into the spaces between the upwardly-oriented walls of the containment seal, wherein the containment seal is comprised of an elastomeric material, wherein the containment seal is a 3D printed structure that comprises a node-beam lattice oriented at a 45 degree angle, wherein the sound suppressing device is configured so that the containment seal is positioned against the work surface when the sound suppressing device is in use so that said sound suppressing device suppresses noise generated between the functional part of a tool and the work surface.