Patent Application
20100009609
The present description is directed to providing a surface modifying assemblage for use in combination with a surface modifying apparatus. More particularly, the present description is directed to providing a surface modifying assemblage and method that facilitates converting a surface modifying apparatus, such as a pole sander, with anyone of several different surface treating assemblages in an easy and reliable manner. Surface modifying devices, such as hand held tools, have been used for working or modifying a wide variety of surfaces. For example, when fabricating a structure, such as a wall or ceiling, it is sometimes necessary to utilize a sanding device to smooth the surface of the structure. For example, interior walls of office buildings and houses typically use drywall panels. The drywall panels may be attached to wood or metal frames to form interior walls and ceilings. Joints or seams are formed along edges where the different dry wall panels are juxtaposed to each other. Typically, the seams are covered with a compound and smoothed. This is to give the appearance that the seams do not exist and provide a wall that is otherwise seamless, smooth, and flat and for increased fire protection. Screw or nail holes are also filled with compound and sanded smooth. In some remodeling, the entire wall is coated to smooth the surface (often referred to as skim coating) and sanded.
Treating compounds are applied wet to the drywall to fill in the seams and any gaps between the drywall panels. Once dry, the compounds are typically sanded smooth. One known type of hand held tool assembly for sanding includes a pole sanding tool that comprises a generally rectangular sanding attachment head attached to a handle or pole through a pivoting structure. Pole sander attachment heads have a fixed size. An elongate sheet of sanding paper for treating the surface is attached to the fixed sized attachment head and usually some effort is required to properly secure the sanding paper to the attachment head due to attaching mechanisms of the latter. Usually the sanding paper is changed due to wear or tearing of paper. Accordingly, repeated efforts are required to replace these sanding papers during a typical drywall finishing operation. Sometimes replacement may take place because different sanding grades may be used.
Moreover, sanding steps generally are repeated several times until seams and gaps appear unnoticeable. The requirements for a smooth and flat finish are quite demanding. Even minor blemishes are usually found to be unacceptable. As such, repetitions of sanding tend to add to user fatigue as well as material and labor costs. Accordingly, the process is labor intensive and time consuming. As a consequence, there is an interest in making the sanding operations more efficient from a labor and time standpoint and less fatiguing in practice.
Moreover, some pole sanding tools when manipulated have a tendency for their attachment head to flip onto its elongate side and thereby gouge or otherwise damage the surface being treated. Clearly, the damage caused by flipping of pole sanders requires additional expenditures of time and labor.
In addition, some drywall finishing operations may require other surface modifying applications besides sanding, such as, cleaning, painting, and the like. Accordingly, costs for treating drywall increases due to different specialty tools and surface modifying assemblages being required before a wall may be wallpapered or painted. As a consequence, there is an interest in making such operations less expensive and time consuming. As such, there is continuing interest in seeking improvements in addressing the foregoing issues in an expeditious and cost effective manner.
The present description is directed to a conversion assemblage for use in converting a surface modifying mechanism having an attaching member. The conversion assemblage comprises: a substantially rigid body assembly including first and second major surfaces opposing each other, the first major surface is attachable to a supporting member of a surface modifying mechanism; the second surface is attachable to a surface modifying member.
The present description is directed to a conversion assemblage for converting a pole sander apparatus having a pivotally connected supporting member. The assemblage comprises: a substantially rigid body assembly including first and second major surfaces opposing each other, the first major surface is adapted for receiving the supporting member, and the second major surface is attachable to a surface modifying member.
The present description is directed to a method of converting a surface modifying mechanism having an attaching member. The method comprises: providing a conversion assemblage including a body assembly made of a relatively stiff material configured with at least a first major surface and a second major surface opposing the first major surface; an attaching layer connected to the second major surface; and a surface modifying layer releaseably connected to the attaching layer; and securing the surface treating assemblage to the attaching member.
The present description is directed to a conversion assemblage adapted for converting an abrading apparatus having a supporting member. The conversion assemblage comprises: a generally rigid body assembly including first and second major surfaces opposing each other, the first major surface is adapted for receiving the supporting member, and the second major surface is attachable to a surface modifying member.
The present description is directed to a conversion assemblage adapted for use in converting a surface modifying mechanism having an attaching member. The conversion assemblage comprises a generally semi-rigid rigid body assembly including first and second major surfaces opposing each other, the first major surface is attachable to a supporting member of a surface modifying mechanism; the second major surface is attachable to a surface modifying member.
The present description is directed to a conversion assemblage adapted for converting an abrading apparatus having a supporting member. The conversion assemblage comprises a generally rigid body assembly including first and second major surfaces opposing each other, the first major surface is adapted for receiving the supporting member, and the second major surface is attachable to a surface modifying member; wherein the generally rigid body assembly includes a molded member made of a relatively lightweight material; a force absorbing member attached to the second major surface; and a first attachment assemblage attached to the force absorbing member along a first major surface thereof, and the first attachment assemblage having a second major surface attachable to a surface modifying member; wherein the first attachment assemblage has longitudinal end portions secured to corresponding longitudinal end portions of the generally rigid body assembly so as to resist separation of the force absorbing member during removal of a surface modifying member.
The present description is directed to a conversion assemblage adapted for use in converting a assemblage adapted for converting an abrading apparatus having a supporting member, the conversion assemblage comprising: a generally rigid body assembly including first and second major surfaces opposing each other, the first major surface is adapted for receiving the supporting member, and the second major surface is attachable to a surface modifying member, wherein the generally rigid body assembly includes a molded member made of a relatively lightweight material, wherein a force absorbing member is molded in the second major surface of the rigid body assembly.
The present description is directed to a conversion assemblage adapted for use in converting a assemblage adapted for converting an abrading apparatus having a supporting member, the conversion assemblage comprising: a generally rigid body assembly including first and second major surfaces opposing each other, the first major surface is adapted for receiving the supporting member, and the second major surface is attachable to a surface modifying member, further including a first attachment assemblage molded to the rigid body assembly.
One aspect of the present description is for facilitating the conversion of a surface modifying mechanism, such as a pole sander or similar hand sander, with one or more conversion assemblages that enhance versatility of the pole sander through use of several different kinds of surface modifying articles.
Another aspect of the present description is for accomplishing the above in a manner that improves surface modifying efficiency and ease of worker manipulation of the surface modifying mechanism.
Another aspect of the present description is to accomplish the above by improving the efficiency of surface modification, through the use of relatively large and lightweight surface modifying assemblies in a manner that reduces user fatigue.
Another aspect of the present description is to minimize damage to surfaces, such as gouging or otherwise marring the surface finishes, when using surface modifying tools, such as pole sanders and other similar devices.
Another aspect of the present description is to accomplish the above by minimizing flipping of a pole sander during use.
Another aspect of the present description is to accomplish the above by minimizing the tearing of surface modifying sheets, such as abrasive sanding sheets during surface treating.
Another aspect of the present description is to facilitate conversions of surface modifying devices, such as pole sanders, using conversion assemblages of the kinds noted above that include restraining devices that enable secure, reliable, and quick couplings and decouplings.
Another aspect of the present description is to enhance versatility of its cooperation to a wide variety of pole sander devices.
Another aspect of the present description is to enhance the kinds of materials that may be used.
Another aspect of the present description is to accomplish the above in a manner that is cost effective to manufacture, assemble, and use.
The aspects described herein are merely a few of the several that can be achieved by using the present description. The foregoing descriptions thereof do not suggest that the present description must only be utilized in a specific manner to attain the foregoing aspects.
The present description is directed to a conversion assemblage and method that facilitates converting a surface modifying apparatus or tool so as to make the latter more versatile, especially in a manner for improving surface modifying efficiency as well as minimizing damage to the surface being treated and any surface modifying article being utilized.
The words “a,” “an,” and “the” are used interchangeably with “at least one” to mean one or more of the elements being described. By using words of orientation, such as “top,” “bottom,” “overlying,” “front,” and “back” and the like for the location of various elements in the disclosed articles, we refer to the relative position of an element with respect to a horizontally-disposed body portion.
In
In some sanding situations, the bottom surface 21 of the pole sander head 14 may be without any material added thereto. In the illustrated embodiment, the pole sander head 14 may have a backup pad 36, such as made of Neoprene™ or a foam secured to the bottom of the plate 20. Typically, with most pole sanders an abrasive sanding paper (not shown) is added to conform to the size and shape of the backup pad 36. During usage of known sanding pole sanders, as noted above, sanding papers tend to become easily damaged, such as when striking edges or the like. In addition, the relatively small size of the backup pad and thereby the surface area being sanded tends to limit the efficiency of the sanding operation. In addition, there is very little versatility with known pole sanders since they are primarily used as sanding devices and are not generally capable of performing other surface treating applications.
According to the present description, conversion of a pole sander head 14 to accommodate the conversion assemblage 12 may commence with adding an attaching member 42. This may be done prior to adding the conversion assemblage 12 to the pole sander device 10. The attaching member 42 may be shaped and sized to generally match the size and shape of the pole sander head 14. The attaching member 42 may be provided with opposing first and second major surfaces 43, 44, respectively. The major surface 43 may be attached to the bottom surface 21 permanently as by an adhesive. Alternatively, the major surface 43 may be releasably attached to the bottom surface 21 by a pressure sensitive adhesive. While not illustrated, the present description envisions that the surfaces 21 and 43 may be joined by a releasable mechanical fastening device. In this exemplary embodiment, the attaching member 42 may be at least one strip that encompasses the surface area of the backup pad 36. The major surface 44 may include one or more strips of a hook and loop system element 46, such as hook members 46.
The conversion assemblage 12 in the illustrated exemplary embodiment is defined as a relatively rigid and lightweight body assembly 50. The body assembly 50 defines a first and second major surface 52, 54, respectively. It will be appreciated that the body assembly 50 may have a variety of shapes and sizes. To facilitate the sanding operation, the second major surface 54 has an area that is significantly larger than the area of the attachment head 14. In the exemplary embodiment, the body assembly 50 has a generally rectangular shape that is significantly larger than the attachment head, such as in the order of about 50% to about 150% larger. Of course, the present description is not limited to any such increases in size. A recess 56 in the body assembly 50 that, in part, defines the first major surface is sized to accommodate therein the pole sander head 14 including the attaching member 42, much in the manner that is illustrated in the drawings. The recess may be sized and shaped to receive the supporting member so that its center of gravity is close to a center of gravity of the body assembly, whereby flipping over of the body assembly during use is inhibited. Because the attachment makes the surface modifying mechanism wider, it tends to flatten the angle between the pivot point 32 and the edge of the surface modifying mechanism.
The body assembly 50 is made of a molded lightweight, low density, relatively strong, and stiff thermoplastic, thermosetting, or cast metal material. The rigidity is useful from a standpoint of enabling a user to apply pressure more uniformly to a surface modifying article being carried thereby. A rigid backing for abrasives tends to make for a flatter finish provided by the abrasives. The low density and generally lightweight construction allows the molded body assembly 50 to be relatively easily handled by a user. This tends to lower fatigue during use. In addition, the rigid and lightweight construction enables formation of relatively larger surface abrading areas without drawbacks of additional weight. Also, the low density and relatively rigid construction enables formation of a relatively stiff raised edge, compared to conventional pole sander attachment head backup pad. This is particularly useful for abrading in comers, such as between ceilings and wall surfaces. The raised edge of the attachment provides stiffness thereby keeping the surface modifying mechanism generally flat. The relatively raised edge tends to lessen the likelihood of abrasive surfaces, such as paper type abrasives articles, being torn or otherwise damaged. Also, the material of the present description is intended to be reusable, thereby enhancing overall versatility of the conversion assembly, since many different surface modifying articles may be added thereto. Accordingly, the body assembly 50 may dispense with the need for requiring different tools that carried different surface modifying articles.
In the exemplary embodiment, the present description envisions use of a molded polystyrene foam material that has a relatively low density. For example, the density may be in the order of about 2.50 pounds/ft.3 to about 6.00 pounds/ft.3. The molded polystyrene foam may be open or closed cell although in the exemplary embodiment it is a closed cell type. Other suitable materials may be used, such as but not limited to polymeric foams, such as, polystyrenes, polyurethanes, polyolefins, polyesters, and combinations thereof.
Referring back to the recess 56, it includes an attachment assemblage that may include a plurality of pads 60 having exposed loop type fastening elements (not shown) that are adapted to releasably and engage and attach to the hook elements on the attaching member 42. While a plurality of pads 60 are disclosed, a single pad may be used instead. In addition, the present description envisions use of other releasable attachment mechanisms including a smooth surface that could cooperate with a pressure sensitive adhesive attaching member.
Connected to the second major surface is an attachment assemblage or layer 70 for use in releasable connection to a surface modifying member 80. In the exemplary embodiment, the attachment layer 70 may be a pad 72 having openings 73 that reduce weight and have projecting hooks 74 on a bottom major surface thereof, whereas the upper major surface may have a pressure sensitive adhesive layer 76 for releasable attachment to the second major surface 54. The hooks 74 are adapted to releasably engage the surface modifying member 80. In the exemplary embodiment, the surface modifying member 80 may be a foam backed abrasive article 80. The foam backed abrasive article 80 includes a foam back attachment layer 82 that has a working surface 84 which includes abrasive particles 84 coated thereto. The foam attachment layer 82 may be made of a relatively thin and lightweight material. The abrasives may be made of any suitable material. Because of the versatility of the present description, different abrasive grades for sanding may be used, such as 100, 120 and 150. These examples are merely illustrative and are not considered limiting. In one exemplary embodiment, the foam back attachment layer 82 may be lightweight polyurethane, such as molded open cell polyurethane. In other embodiments, synthetic polymer foams, such as, polyurethanes, Neoprene™, styrenebutadiene rubber, polyethylenes, acrylic foams, and combinations thereof may be used. The thickness of the foam back attachment layer 82 may be in the order of about 1-5 mm. Other exemplary examples may include sanding pads that are commercially available from 3M Company, St. Paul, Minn. and typically have thickness of about 5 mm (or 0.127 inches or 127 mils). Another example includes an abrasive foam backup of about 2-3 mm or 50 to 75 mils up to the about 5 mm. Backup pads on pole sander may have a thickness in a range of about ⅛ inch to about ¼ inch. It will be appreciated that if the foam back attachment layer 82 extends beyond the edges of the body assembly 50, there will be less of a likelihood of damage ( e.g., grooves) occurring to a wall at a corner that is engaged by the surface modifying apparatus because of initial engagement by the relatively soft foam against such a wall. Similarly, if one or more edges of the body assembly 50 is offset relative to the foam back attachment layer or sanding paper layer, the body assembly will not cause damage to a wall at a corner wall.
In another one exemplary embodiment, such a foam backed abrasive article may be commercially available from 3M Company, St. Paul, Minn. under the trade name Sandblaster™. While foam backed abrasive article may be used, other coupling mechanisms for coupling a surface modifying abrasive mechanisms may be used. For example, the present description envisions all kinds of releasable attachment mechanisms, including, but not limited, to a wide variety of hook and loop fastening elements or mechanisms or the like. Some fastening elements include solid protrusions including a stem and an expanded region or head that may take a variety of shapes. Exemplary patents describing this latter type of a fastener include: U.S. Pat. Nos. 3,192,589 and 5,097,570. Another type of fastening element including a multiplicity of intermeshing solid protrusions is described in U.S. Pat. No. 4,875,259. An example of a suitable hook and loop mechanism is commercially available from 3M Company, St. Paul, Minn. under the trade name designations Hookit™ and Hookit™ II. Other suitable configurations of hook and loop attachments are within the scope of the present disclosure. Also, any suitable adhesive system including any kind of pressure-sensitive adhesive may be used instead of the hook and loop arrangements.
Reference is now made to
In this exemplary embodiment, the conversion assemblage 612 provides for side loading of the pole sander attachment head 614. The conversion assemblage 612 includes a body assembly 620 similar to that described above in
In this exemplary embodiment, provision is made for a versatile attaching member 642 that may be a single member and acts to not only secure the conversions assemblage 612 to the pole sander 610, but also serves to secure a surface modifying member(not shown), such as an abrasive pad (not shown). The surface modifying member may be similar to that described in the embodiment depicted in
As in the previous embodiments, the body assembly 850 defines a first and second major surface 852, 854, respectively. The molded body assembly 850 may have a variety of shapes and sizes. The body assembly 850 may have a generally rectangular shape that is significantly larger than the generally rectangular shape attachment head of a pole sander. To facilitate sanding operations, for example, the second major surface 854 also has an area that may be significantly larger than the area of the attachment head (not shown) of a pole sander. The increase in size may be in the order of about 50% to about 150% larger. Of course, the present embodiment is not limited to any such increases in size.
A recess 856 in the body assembly 850 that, in part, defines the first major surface 852 is sized to accommodate therein the pole sander head (not shown) including any attaching member. The pole sander head may be of the type similar to those illustrated and described herein. Because the conversion assemblage 812 makes the surface modifying mechanism wider, it tends to flatten the angle between a pivot point of the tool and the edge of a surface modifying mechanism 894. The body assembly 850 may be comprised of top portion 850a and a mating bottom portion 850b. The bottom portion 850b may have a generally flat major surface. The body assembly 850 may made of the materials noted above in regard to the other exemplary embodiments. As such, the body assembly 850 maybe made of a molded lightweight, low density, relatively strong and stiff thermoplastic, thermosetting or cast materials. In the present exemplary embodiment, a relatively high impact polystyrene material, such as molded acrylonitrile butadiene styrene (ABS) material may be used. ABS is lightweight, has a relatively low density provides stiffness consistent with the teachings of the present description, as well as provides for shock absorbance of the type occasioned by a user impacting a walled surface during use. The ABS body assembly 850 may have density in the range of about 0.35 lb/in3 to 0.65 lb/in3 More typically, the density may range from 0.40 lb/in3 to 0.60 lb/in3. In one embodiment, the body assembly 850 may be injection molded, but other molding processes are envisioned as well, such as thermoforming, milling, and casting. The injection molded ABS body assembly 850 may have a flexural modulus may range from 30,000 lb/in2 to 40,000 lb/in2. Readings that are more typical may range from about 32,500 lb/in2 to about 37,500 lb/in2. Other suitable materials may be used, such as but not limited to polymeric foams, such as, polystyrenes, polyurethanes, polyolefins, polyesters, and combinations thereof It will be appreciated that these other suitable materials will have a flexural modulus similar to the above values.
Opposing pairs of openings 851 are formed in the recess 856, as illustrated in
End portions of each strap may have a plastic loop member 866 attached thereto through the opposite free end portion may pass. The free end portion of the restraining straps 860 and 862 may have a folded over hook portion 868 so that it passes through the loop member 866 and is adapted to engage the type material 860b, 862b extending on an opposite side of each strap. The folded over hook portion 868 after passing through the loop member 866 may be pulled to cinch the restraining straps 860 and 862 over a pole sander attachment head to secure it the conversion assemblage 812. This provides a simple manner of releaseably securing the conversion assemblage 812 to the pole sander. After the restraining straps 860 and 862 have been attached, the mating bottom portion 850b may be secured to the top portion 850a. The bottom portion 850b may be secured, as by ultrasonic welding, adhesives, or other similar approaches. The bottom portion 850b may be provided with a generally flat major surface 872.
It will be appreciated that the restraining straps 860 and 862 may also be made of any suitable materials, such as cloth, plastic, leather, and combinations thereof. While a hook-and-loop releasable fastener arrangement is illustrated for the releasable securing mechanism 864, the present description envisions that any other suitable approaches. Other approaches include, but are not limited to, buckle arrangements, sliding engaging fasteners, locking pawls, latches, snap-fitting devices, pressure sensitive adhesive tapes, magnetic devices, slidable or pivoting members on the conversion assemblage that slide or pivot over the attachment head to restrain the latter to the former. The restraining assembly 858 may include, but not be limited to, buckle arrangements, sliding engaging fasteners, locking pawls, latches, snap-fitting devices, pressure sensitive adhesive tapes, magnetic devices, slidable or pivoting members on the conversion assemblage that slide or pivot over the attachment head to restrain the latter to the former.
The present embodiment envisions the use of a force absorbing adapter assembly 876 that may include a force absorbing back-up pad 880, layer 880 or element 880 for providing a cushioning effect as the surface modifying article, such as an abrasive article abrades a surface. Cushioning is effective in many situations wherein the surface to be treated is hard. In the present exemplary embodiment, the force absorbing layer may be a generally rectangular back-up pad 880 that is sized and shaped to be secured to match the major surface 872 of the bottom housing portion 851b for supporting the abrasive article. The back-up pad 880 provides some cushioning or resiliency to minimize tearing of an abrasive pad during surface modification. An adhesive layer 881 may be applied to a top major surface of the back-up pad 880 to act as an interface with the molded housing assembly 850. The adhesive layer 881 may be a suitable type, such as styrene butadiene rubber (SBR) that is applied to the major surface 872 or similar adhesive materials including rubber-based adhesives, acrylics, silicones, permanent type pressure adhesive materials and combinations thereof that are commercially available may be used.
The back-up pad 880 may made from several materials, such as, but not limited to lightweight polyurethane, such as molded open or close cell polyurethane, synthetic polymer foams, such as polyurethanes, Neoprene™, styrene butadiene rubber, polyethylene, acrylic foams, and combinations thereof. The back-up pad 880 may have a thickness, such as about 1 mm to about 5 mm. More typically, the thickness may range from about 2 mm to about 4 mm. Alternatively, the thickness may range from about 1/16 inch (e.g., 62.5 mils) to about ¼ (e.g., 250 mils) inch. Thicknesses in these ranges provide advantages of minimizing flipping while providing cushioning and to soften the scratch to the abrasive. In the exemplary embodiment, the back-up pad 880 may have a density of about 2 lb/ft3 to about 5 lb/ft3. More typical density ranges may be from about 2 lb/ft3 to about 3 lb/ft3. The back-up pad may have a Shore A hardness at 72 degrees F. that is in a range of about 30 A to about 60 A, and, more typically, in a range of from about 30 A to 50 A, and even more typically in a range of from about 25 A to 50 A. As such, this serves to not concentrate the sanding force in one spot and yet apply more pressure to the high areas needing to be reduced. The material of the back-up pad should be relatively stiff to retain its shape if set down.
In this exemplary embodiment, the provision is made for an attaching member 882 or assemblage 882 for attaching the conversion assemblage 812 to the surface modifying member 894. The attaching member 882 may be an integral member that is secured to the back-up pad 880642 (
The attaching member 882 may be provided with opposing first and second major surfaces 884, 886, respectively. In the present illustrated exemplary embodiment, the first major surface 884 may be attached permanently to a bottom surface of the back-up pad 880 by any suitable approach that includes, but is not limited to adhesives, clamps or the like. In the present exemplary embodiment, the attaching member 882 includes an adhesive layer 888 defining the first major surface 884 and a strip of a releasable mechanical connection mechanism 890 defining the second major surface 886. The releasable mechanical connection mechanism 890 may have a hook and loop system 891 defining the second major surface 886. The hook and loop system 891 is adapted to be releaseably secured to a matable and complementary portion of a hook and loop system 896 on a first major surface of the surface modifying mechanism 894, article 894.
The adhesive layer 888 may be made of one of a variety of suitable adhesives used with hook and loop systems and may include, but not be limited to, rubber-based adhesives, hot melts, acrylics, silicones, and combinations thereof. In the illustrated exemplary embodiment, the adhesive layer 888 is a rubber-based adhesive that is adaptable for securing a strip of the hook and loop system 891. Many kinds of such suitable adhesives are commercially available.
As depicted in
The surface modifying member 894 may be similar to that described in the exemplary embodiments depicted in
This present description may take on various modifications and alterations without departing from the spirit and scope. Accordingly, this present description is not limited to the above-described embodiments, but is to be controlled by limitations set forth in the following claims and any equivalents thereof. This present description also may be suitably practiced in the absence of any element not specifically disclosed herein. All patents and publications noted above, including any in the Background section are incorporated by reference into this document in total.
The present application is a continuation-in-part of copending and commonly assigned U.S. patent application entitled “Conversion Assemblage Adaptable For Use In Combination With A Surface Modifying Apparatus And Method Thereof” filed in the United States Patent and Trademark Office on Oct. 27, 2008, and having U.S. Ser. No. 12/258,901; and copending and commonly assigned U.S. patent application entitled “Conversion Assemblage Adaptable For Use In Combination With A Surface Modifying Apparatus And Method Thereof” filed in the United States Patent and Trademark Office on Jul. 10, 2008, and having U.S. Ser. No. 12/170,949 which are incorporated herein and made a part hereof
| Number | Date | Country | |
|---|---|---|---|
| Parent | 12258901 | Oct 2008 | US |
| Child | 12411817 | US | |
| Parent | 12170949 | Jul 2008 | US |
| Child | 12258901 | US |
