TOOL DUST CONTROL ATTACHMENT
A tool accessory is disclosed comprising a tube and capable of attachment to the body of a tool (for example, a rotary grinder) by means of a mounting tab. The tube has a first end with an opening positioned proximate to the source of dust created by the tool. The second end of the tube is adapted for connection to a vacuum source. The opening collects substantially all of the dust from the tool, but does not obstruct the view of the grinding bit.
Latest M.D.C. Romani, Inc. Patents:
- Hose adapter and assembly incorporating the same
- Swivelable vacuum hose coupler of a grooming clipper vacuum attachment
- Vacuum attachment and method of converting hair grooming clipper to mount vacuum attachment
- Variable vacuum attachment for hair grooming clipper having adjustable auxiliary vacuum relief mechanism
- Conforming vacuum attachment for mounting to hair grooming clippers
This application claims the benefit under 35 U.S.C. §119 of U.S. Provisional Application Ser. No. 61/922,966, filed Jan. 2, 2014, which is incorporated by reference herein in its entirety.
FIELD OF INVENTIONThe present invention relates to hand held tool accessories, specifically to accessories that collect air born particles created when abrasive stones or bits are used to grind softer materials.
BACKGROUND OF THE INVENTIONHand held tools create dust and debris. Rotary grinders, in particular, create large amounts of fine dust. The dust is inhaled and deposited in the eyes and on the skin of people and animals in the immediate area of the grinding operation. The dust created can be a health hazard.
In recent years the use of rotary grinders has become a preferred method of trimming and buffing nails. Particularly in the pet grooming industry, groomers are using rotary grinders in increasing numbers. There is a concern about the consequences of breathing the particles that are created when the nails are ground. The dust created is irritating to the lungs and eyes of people and animals and can trigger asthma attacks. Operators can also be exposed to biohazards such as bacteria and protozoa contained in the dust.
When using a rotary grinder on people and animals, it is also important to have a clear sight of the grinding bit and its contact point as contact with soft tissue would cause injury. It would therefore be advantageous to develop an apparatus for reducing the dangers of using rotary grinders by collecting the grinding dust while allowing the operator a clear view of the object being grinded.
BRIEF SUMMARY OF THE INVENTIONOne object of the present invention is to collect the dust created when using a rotary grinding tool and evacuate it by positioning a properly proportioned nozzle and vacuum source near the grinding bit, cutting wheel, sander, or other source of the dust.
Another object of the present invention is to allow the operator full visibility of the grinding bit. This is achieved by not employing a shroud around the bit. This also allows the bit of the grinder to be replaced without detaching the dust collection attachment from the grinder.
Still another object of the present invention is to provide uniform airflow around the full girth of the grinding bit by utilizing a minimally restrictive air flow path.
Briefly stated, yet another aspect of the present invention provides a device that is easily attached to a portable handheld rotary grinder. Dust removal is accomplished by operably connecting the device to a vacuum source. The device is comprised of a singular tube that is positioned along a portion of the length of the grinder body, extending towards the rear of the grinder where it connects to the vacuum source. In one embodiment, the tube conforms to the general shape of the grinder's body, sweeping gradually toward the end positioned adjacent to the grinding bit. The end proximate the grinding bit is terminated in such a way that the side walls of the opening of the tube are parallel to the grinding surface of the grinding bit. In one embodiment, the size of the opening is substantially the size of the grinding bit. Preferably, the opening is slightly longer and wider than the bit. The path of the rotating bit can extend slightly into the plane created by the opening at the end of the tube near the grinding bit. Alternatively, the path of the bit can be adjacent to the plane of the opening. The tube is attached to the grinder utilizing a thin plate with a hole that is adapted to engage the body of the grinder. A band strap can be added to steady the end of the tube connected to the vacuum source.
The tool dust control attachment 1 is comprised of a tube 10 having a first end 15 and a second end 20. There are openings 18 and 19 at each end of tube 10 to allow passage of dust through the tube. The attachment 1 further has a mounting tab 7, which is used to secure the too dust control attachment 1 to grinder 2. At the first end 15 of the attachment 1 is an opening 18 adapted to collect dust dispersed by the grinding bit 5 of the rotary tool 2. The second end 20 of the tube 10 is adapted to connect to a source of vacuum, embodied as an electric vacuum cleaner 3 as shown in
Though the invention is described being assembled to a rotary grinder 2, it is not to be limited to only being compatible with a rotary grinder 2. The tool dust control attachment can be adapted to routers, oscillating multi-tools, or any other tool that creates dust. In addition, the tool dust control attachment 1 can be constructed of metal, plastic, or any material capable of retaining its shape under vacuum pressure.
The grinder 2 shown in
Tool dust control attachment 1 is capable of being attached to the body of the grinder 2 by a mounting tab 7. As shown in
In one embodiment, end 15 of tube 10 is bent at an angle β towards the grinding bit 5 when assembled to grinder 2. As shown in
Angle β is about 25 to 35 degrees in the embodiment shown in
The radial distance L1 from the center of hole 12 in the mounting plate 7 to the outer wall of the tube 10 is dependent on the size of the body of grinder 2, and is nearly equal to the radius of the body of grinder 2 at its largest point when the tube 10 runs parallel along the length of the grinder 2, as shown in
Tube 10 has an opening 18, forming nozzle 11, at the end 15 adjacent to the grinding bit 5. At the opposite end, or distal end 20, is a vacuum tube connection 21. In the preferred embodiment, the vacuum connection 21 is an area at the end of the tube 10 that receives a hose 4 from the vacuum source 3. The hose 4 can be held to the tube 10 by a friction fit, gasket, set screw, or other means typically used for securing a vacuum to an attachment. For example, a common connection means is providing the attachment with an outer diameter that is substantially the inside diameter of the hose, so that the hose 4 slides over the attachment. A taper on either the hose 4 or attachment secures the connection. Alternatively,
Referring again to
Now turning to
Referring again to
Although
In an alternative embodiment, as shown in
While the disclosure has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the embodiments. Thus, it is intended that the present disclosure cover the modifications and variations of this disclosure provided they come within the scope of the appended claims and their equivalents.
Claims
1. An attachment for collecting dust from a tool having a body and a source of dust, wherein the attachment comprises:
- a tube having a first end and a second end, wherein the first end has an opening and the second end is adapted to connect to a vacuum source;
- a mounting tab connected to the tube between the first end and the second end, wherein the mounting tab has a hole sized to receive the tool; and
- wherein a plane defined by the opening of the first end is oriented at angle α relative to a line extending along the length of the tool.
2. The attachment of claim 1:
- wherein the first end of the tube is bent at an angle β relative to the axis of the tube; and
- wherein the mounting tab is substantially perpendicular to the axis of the tube.
3. The attachment of claim 1, wherein the mounting tab is connected at an angle φ relative to the axis of the tube.
4. The attachment of claim 1, further comprising a strap capable of stabilizing the tube relative to the body of the tool.
5. The attachment of claim 2, wherein the angle β is about 25 to 35 degrees.
6. The attachment of claim 1, wherein the angle a ranges from −30 degrees to +30 degrees.
7. The attachment of claim 6, wherein the angle a is substantially 0 degrees.
8. The attachment of claim 1, wherein the center of the hole aligns with the axis of rotation of the tool when attached to the tool.
9. The attachment of claim 1, wherein the mounting tab is a flat plate.
10. The attachment of claim 1, wherein an area of the opening of the first end is greater than an area of the source of dust.
11. The attachment of claim 1, wherein the source of dust is adjacent to the opening.
12. The attachment of claim 1, wherein the source of dust penetrates the plane defined by the opening.
13. The attachment of claim 1, wherein the opening is oval-shaped.
14. An attachment for collecting dust from a tool having a body, a collet, a collet retaining nut, and a source of dust, wherein the attachment comprises:
- a tube having a first end and a second end, wherein the first end has an opening and the second end is adapted to connect to a vacuum source;
- a mounting tab connected to the tube between the first end and the second end, wherein the mounting tab is adapted to be retained on the tool near the collet by the collet retaining nut; and
- wherein a plane defined by the opening of the first end is oriented at angle α relative to a line extending along the length of the tool.
Type: Application
Filed: Jan 2, 2015
Publication Date: Jul 2, 2015
Applicant: M.D.C. Romani, Inc. (Indiana, PA)
Inventor: Frank Douglas Romani (Saltsburg, PA)
Application Number: 14/588,612