The present invention is directed toward a buffing and/or polishing pad, and more particularly, to a buffing and/or polishing pad that is more robust, provides for heat dissipation, and can be used with traditional rotating and/or orbiting devices.
Buffing refers to the application of a chemical or compound to a surface using a buffing pad. In the automotive detailing industry, for example, buffing is used to repair, refinish or polish the exterior surfaces of automobiles. Buffing can be done by hand. However, professionals and consumers alike prefer to use buffing pads with power buffers. A power buffer can be pneumatic, in which the power is supplied by an air compressor, or motorized, in which the power is supplied by an electric motor. A motorized power buffer is a hand-held tool having a buffing pad attached to a spindle that extends from the electric motor. The motor spins the buffing pad and thus results in faster performance, while reducing fatigue on the operator. It also allows the operator to get optimum finishing effects as compared to buffing by hand.
There are two types of motorized power buffers, including high-speed rotary buffers and dual-action or random orbital buffers. The main difference between the two relates to the direction of the rotation of the buffing pad assembly, which in turn produces different results. High-speed buffers provide a circular motion, spinning at very high continuous revolutions per minute (RPMs) and can have either one or two buffing pads attached to the motor. For example, a dual-head buffer is a high-speed rotary buffer having two buffing pads attached to the motor, adjacent to each other. Dual-action or random-orbital buffers turn in a combined circular and orbital motion, at varying speeds. The continuous revolutions of either type of buffer causes friction on contact with the surface producing heat, that when combined with a compound alters the surface of the automobile. Power buffers are used for various purposes, including repairing damages to surfaces or for different finishing effects. The buffing pads are usually circular, are made in varying sizes, and are made of various materials, such as natural wool, synthetic fibers, a blend of wool and synthetic fibers or open or closed cell synthetic foam.
One of the latest generations of known rotary and random orbital buffing devices include a buffing pad attached to a buffing device back plate as shown in
In
Typically, the back surface 104 and connection member 106 of the back plate 100 are constructed of a hard material such as metal, wood, plastic, epoxy resin, polyurethane, or other rigid materials. The optional connection rod 108 may be a threaded rod made of hard material that is capable of physically engaging the buffing device powered head-unit (not shown). If no optional connection rod 108 is utilized, the connection member 106 may include a threaded shaft (not shown) within the connection member 106 that is capable of physically engaging the buffing device powered head-unit with a threaded rod.
Generally, the outer surface 112 of the buffing pad 102 is constructed of soft or semi-soft material for use in polishing a surface. The material may include foam, polyurethane, wool, or other material used for polishing surfaces. The inner surface 116 and inner wall surface 118 of the buffing pad 102 define the surfaces of a cavity 124 within the buffing pad 102. The cavity 124 generally assists in roughly centering the back plate 100 to the buffing pad 102.
Such systems have several drawbacks. First, when the cavity 124 itself is being used to center the back plate 100 and prevent the back plate 100 from hitting any external surface, the violent motion associated with an orbital buffing device can result in the edge 110 of the back plate 100 cutting into the cavity 124, or the inner wall surface thereof 118. This can result in the buffing pad 102 being destroyed prematurely.
One solution is to add a plastic “cup” to the cavity 124, where the “cup” includes sides and a bottom that resides between the inner surface 116 of the buffing pad 102 and an attachment means (e.g., fabric hook-and-loop fasteners) (not shown). A problem with this solution is that the “cup” prevents the buffing pad 102 from breathing (due to the plastic residing between the attachment means and the inner surface of the buffing pad), which is problematic, especially when the buffing pad is used with a random orbital buffing device. And if the buffing pad does not “breath,” and excess heat is generated, the buffing pad (or elements thereof, e.g., fabric hook-and-loop fasteners) may start to melt, resulting in premature failure of the buffing pad and/or surfaces/components thereof.
And if a plastic “cup” is not used, the back plate 100 may cut into the cavity 124, or the inner wall surface thereof 118 (see discussion above), thereby resulting in unwanted vibration, which can cause operator fatigue and annoyance, undesirable buffing results, premature wear of the bearings of the powered head-unit, potential damage to the buffing pad 100, etc. In addition, objects moving with combined rotational and orbital motion experience violent forces that can significantly amplify the problems associated with uncentered spinning objects. This motion places heavy stress on the hook-and-loop fabric (not shown) holding the buffing pad 102 to the back plate 100. Typically, this motion is so violent that it can shear the loops on the inner surface 116 of the buffing pad 100 and create heat that is capable of loosening the adhesives that typically attach the hook-and-loop fabric on to the buffing pad 100.
In light of the foregoing, there is a need for a system capable of solving the above-described problems with known buffing pads, and in particular, for a buffing and/or polishing pad assembly that is resilient, provides for heat dissipation, and can be used with traditional rotary and random orbital buffing devices. In addition, the buffing pad assembly should be relatively easy and cost effective to manufacture.
The present invention provides a buffing pad assembly that overcomes the aforementioned drawbacks in the prior art. In preferred embodiments of the present invention, the buffing pad assembly includes a buffing pad, an attachment means (e.g., Velcro™), and an insert (e.g., plastic ring) that can be heated and deformed to create a cavity on a backside of the buffing pad assembly.
In one embodiment of the present invention, the buffing pad has at least one edge, a front surface and a back surface having a cavity, where the cavity is configured to receive an attachment means (e.g., Velcro™) and an insert. In a preferred embodiment of the present invention, the insert functions to protect the inner wall surface of the buffing pad from the backing plate during violent forces generally associated with traditional rotary or orbital buffing devices. In one embodiment, the insert is an L-shaped “ring” that protects the cavity (or inner) wall surface, but is not continuous on the cavity bottom, thereby providing for heat dissipation.
In one embodiment, the insert is (at least partially) under the attachment means, or between at least a portion of the attachment means and the buffing pad (or the cavity provided therein). This prevents the backing plate from getting under the edge of the insert, which can result in the insert being “lifted” (or detached) from the buffing pad. In an alternate (preferred) embodiment, the insert is (at least partially) above the attachment means. In either embodiment, heat can be applied to the insert to affix the insert to the attachment means and/or buffing pad (e.g., by heating the insert to its melting point).
In one embodiment, heat is used to both affix the insert to the attachment means and/or buffing pad and to create a cavity on the backside of the buffing pad assembly. In particular, the insert (or plastic ring) may be heated to its melting point, thereby affixing (melting) the insert to the attachment means and/or buffing pad. The insert may then be heated (again) (or cooled) to its glass transition temperature (rendering it pliable), so that the insert can be deformed into a desired shape (e.g., a cavity).
In one embodiment, prior to heating/deforming the insert, a “channel” is cut into the side of the buffing pad, resulting in a first outer surface and a second outer surface, where the shape of the “channel” varies depending on the profile desired. After the channel has been cut into the side of the buffing pad (or prior, depending on the assembly process), the attachment means is affixed to the back surface of the buffing pad (e.g., using heat-resistant glue) and the insert is then centered (e.g., via a jig) on the upper surface of the attachment means. As discussed above, the insert should preferably be ring-shaped for heat dissipation, reduced pad distortion, etc.
A first tool having at least one heating element is then used to heat the insert to its melting point, thereby affixing the insert to the upper surface of the attachment means, which in turn is affixed to the back surface of the buffing pad. A second tool may then be used to deform (or shape) the insert into a cavity. And because the insert is affixed to the attachment means (or a portion thereof), and the attachment means is affixed to the buffing pad (or a portion thereof), deforming the insert results in deforming (a) edges of the attachment means and (b) edges of the buffing pad, thereby creating a “layered” cavity. And because of the channel, the front surface of the buffing pad can remain flat, while the back surface is deformed into a cavity. Not only does this provide a protective layer for the cavity sides, but it simplifies (and therefore reduces the cost of) the manufacturing process.
A more complete understanding of a buffing pad assembly will be afforded to those skilled in the art, as well as a realization of additional advantages and objects thereof, by a consideration of the following detailed description of the preferred embodiment. Reference will be made to the appended sheets of drawings that will first be described briefly.
The present invention provides a buffing pad assembly that includes a buffing pad, an attachment means, and an insert that can be heated and deformed to create a cavity on a backside of the buffing pad assembly. This invention addresses problems found in traditional buffing pad assemblies, including, heat dissipation, robustness, and difficulties and expenses in manufacturing. In the detailed description that follows, like element numerals are used to describe like elements shown in one or more of the figures.
In general, the assembly comprises a buffing pad having at least one edge, a front surface and a back having a cavity, where the cavity is configured to receive an attachment means and an insert. In a preferred embodiment of the present invention, the insert functions to protect the inner wall surface of the buffing pad from the backing plate during violent forces generally associated with traditional rotary or orbital buffing devices. In alternate embodiments, the insert can also (or alternatively) function to substantially center the buffing pad on the backing plate (e.g., sized to receive a corresponding back plate).
In a preferred embodiment, as shown in
As shown in
An exemplary insert 212 is shown in
It should be appreciated that while
In one embodiment, the bottom 220 of the insert 212 is (at least partially) under the attachment means 214, or between at least a portion of the attachment means 214 and the bottom of the cavity 210. See, e.g.,
It should be appreciated that other means (e.g., heat-resistant glue, etc.) can also or alternatively be used to affix the insert 212 and/or attachment means 214 to the buffing pad. It should also be appreciated that the attachment means 214 is not limited to fabric hook-and-loop fasteners (e.g., Velcro™), and other fastening means are within the spirit and scope of the present invention. It should further be appreciated that the present invention is not limited to the arrangement of the insert 212 and attachment means 214 shown in
If the buffing pad is constructed as discussed above, several other benefits are achieved, including a buffing pad shape that is conducive to buffing in tight spots. As shown in
As stated above, the present invention is not limited to the foregoing embodiments, and other embodiments are within the spirit and scope of the present invention. For example, as shown in
It should be appreciated that the present invention is not limited to the embodiment shown in
In one embodiment of the present invention, the insert 212 is heated not only to affix the insert 212 to the attachment means 214 and/or cavity walls, but to render the insert 212 pliable (allowing it to be molded into a desired shape). It should be appreciated that the temperature necessary to melt and/or render the insert 212 pliable may vary depending on the type and thickness of plastic (the term plastic is used herein to include thermoplastics). It should also be appreciated that the temperature necessary to melt the insert 212 may be different from the pliability temperature (i.e., the temperature at which the plastic ring can be deformed). Thus, it may be necessary to first heat the insert 212 to its melting point (e.g., affixing it to the attachment means 214 and/or buffing pad 202) and then heat it (or let it cool) to just above its glass transition temperature, where the insert 212 can be deformed (or formed) to create the foregoing L-shape, or the like. Once the insert 212 has been deformed (or molded) into a desired shape, it should then be cooled to harden retain its desired shape (e.g., L-shape, etc.). It is this shape/hardness that protects the cavity walls of the buffing pad 202 from the edge 110 of the back plate 100 (see
Using heat and at least one tool (see below) to form the insert 212 can also simplify and reduce the cost of manufacturing. For example, the buffing pad 202 may be cut into the profile as shown in
A first tool 300, having at least one heating element 302A, 302B, is then used to heat the insert 212 to its melting point, thereby affixing the insert 212 to the upper surface of the attachment means 214, which in turn is affixed to the back surface of the buffing pad 202. As shown in
Not only does this provide a protective layer for the cavity sides, but it simplifies (and therefore reduces the cost of) the manufacturing process. For example, it is much easier (and reduces waste) to cut a channel in the side of the buffing pad than to cut a cavity into the back surface of the buffing pad. And by deforming the insert (e.g., into an L-shape) after the insert has been affixed to the attachment means and/or buffing pad, a “standard” buffing pad (i.e., flat front surface, flat back surface) with a channel cut into the side can be transformed into a flat-faced buffing pad having a cavity on its backside, as shown in
A method of manufacturing a buffing pad assembly is accordance with one embodiment of the present invention is provided in
Examples of a buffing pad 202 after step 1702 (after the “channel” has been cut) are provided in
It should be appreciated that the present invention is not limited to the manufacturing method described in
Having thus described a preferred embodiment for a buffing pad assembly, it should be apparent to those skilled in the art that certain advantages have been achieved. It should also be appreciated that various modifications, adaptations, and alternative embodiments thereof may be made within the scope and spirit of the present invention. The invention is further defined by the following claims.
Number | Date | Country | |
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Parent | 29808610 | Sep 2021 | US |
Child | 17949918 | US | |
Parent | 29847822 | Jul 2022 | US |
Child | 17949918 | US |