Patent Document

CROSS-REFERENCE TO RELATED APPLICATIONS  
       [0001]     This application is a continuation-in-part of application Ser. No. 11/726,154, filed Mar. 21, 2007, which is a continuation-in-part to PCT Application PCT/US/2006/043666 filed on Nov. 10, 2006 which claims benefit of priority to Provisional Application Ser. No. 60/735,580 filed Nov. 12, 2005. 
     
    
     BACKGROUND OF THE INVENTION  
       [0002]     The present invention relates to disposable cleaning tools. More particularly, the present invention describes an economical disposable cleaning pad with desired dust wiping and trapping capability, as well as a handle.  
         [0003]     Cleaning articles of the hand duster type are typically used in households for dusting furniture, decorative articles, and the like. These cleaning articles can either be as simple as a single dusting cloth or may have a fluffy cleaning pad or brush portion made of one or more sheets for wiping off the dust from the surface of the object to be cleaned. The cloth or pad is sometimes attached to a handle, allowing the user to clean places which are hard to reach.  
         [0004]     Different types of hand dusters are manufactured and are available in the market. One of the most commonly used hand dusters is one with a brush portion made of fibers. The fibers in the brush increase the dust trapping ability of the cleaning article.  
         [0005]     U.S. Pat. No. 4,145,787, issued to Bastian et al., discloses a hand duster comprising a relatively large fluffy spherical shaped head, a handle and a wire means to retain the head towards one end of the handle. The head consists of a very large number of fine, flexible, coextensively juxtaposed fibers extending from a central region of the head. However, since the head portion of the described duster has only fibers, it is not very durable. Fibers in the head portion may get entangled or curled during the cleaning process. As a result, the head portion gets compressed and the duster becomes less effective during continued use.  
         [0006]     In another type of a cleaning article, the brush portion is made up of twisted yarns of cotton or like materials. The twisted yarns trap dust more efficiently when an adhesive oil agent, such as liquid paraffin, is applied to their surface. Moreover, these yarns are costly and hence the cleaning articles made of twisted yarns are not an economical choice for cleaning articles which are to be disposed of after one use.  
         [0007]     Cleaning articles having laminated non-woven fabric sheets are also currently manufactured. In these cleaning articles, one or more such sheets are laminated and their peripheral portions are unattached to each other, keeping these portions loose to wipe the surface of the object to be cleaned.  
         [0008]     In another variation of these cleaning articles, the peripheral portions are cut to form a duster portion having long strips. Since non-woven fabrics are good for wiping dust and are also not very expensive, these fabrics are suitable raw materials for making disposable cleaning articles. However, the cleaning articles formed in such a manner are flat and hence the desired dust trapping capability is not optimized.  
         [0009]     U.S. Pat. No. 6,813,801, issued to Tanaka et al., discloses a cleaning article having a brush portion. The brush portion of the described cleaning article is provided with two or more non-woven sheets and fiber bundle layers. In some embodiments of the cleaning articles, the non-woven sheets are provided with strips which are described as increasing the rigidity of the brush portion and preventing entanglement of the fibers. However, the use of a large number of sheets as a constituent not only increases the manufacturing cost and inventory overhead of the cleaning article, but also complicates the manufacturing process.  
         [0010]     As mentioned above, various types of cleaning articles are currently being manufactured and sold. However, a need exists for a disposable cleaning article that is less expensive to manufacture and has optimal dust wiping and trapping capability.  
         [0011]     It is therefore desirable to make disposable cleaning articles using simplified manufacturing process steps, and hence to reduce the manufacturing cost and provide an economical and durable disposable cleaning article with the desired dust wiping and trapping capability.  
       SUMMARY OF THE INVENTION  
       [0012]     It is an object of the present invention to provide an economical and durable disposable cleaning tool.  
         [0013]     It is a further object of the invention to manufacture a cleaning tool using a reduced number of steps to simplify the manufacturing process.  
         [0014]     It is yet another object of the present invention to provide a cleaning tool with improved dust wiping and trapping capabilities.  
         [0015]     It is a further object of the present invention to provide a cleaning tool that can be stored in a minimum amount of space.  
         [0016]     The present invention discloses a disposable cleaning tool comprising a an economical disposable cleaning pad with desired dust trapping and wiping ability and an implementing means. The disclosed cleaning pad may be prepared using simplified reduced manufacturing process steps and thus has a reduced manufacturing cost. The implementing means may comprise a foldable handle. The handle may be held within the cleaning pad by means of frictional engagement.  
         [0017]     According to an embodiment of the present invention, the cleaning pad is constructed with a top sheet and a fiber bundle. In the present cleaning pad, the top sheet is folded over, forming a cleaning portion and a back portion, while at the same time providing a pocket for attachment of a handle to the cleaning pad. Depending on the configuration of the pocket, a user may alternatively insert his or her hand into the pocket for using the cleaning pad. The handle may include a hinge, or may be of two-piece construction, for convenient folding and storage.  
         [0018]     The fiber bundle is disposed on the cleaning portion of the top sheet. The fiber bundle is preferably at least partially joined to the top sheet. In this way, disaggregation or entanglement of fibers forming the fiber bundle is suppressed. The cleaning pad may additionally be provided with a bottom sheet adjacent the fiber bundle opposite the top sheet, enhancing the contact between the cleaning pad and the object which is to be cleaned.  
         [0019]     In the cleaning pad according to a first embodiment of the invention, the cleaning portion and the back portion of the top sheet are joined together forming an empty space or pocket. The empty space thus constructed is configured to provide a pocket into which a handle, a users hand or other implementing means can be inserted. The fiber bundle is also at least partially attached to the cleaning portion of the top sheet. In the cleaning pad thus constructed, the fiber bundle is partially fixed during the cleaning operation, so that the cleaning pad is of durable construction.  
         [0020]     In this configuration, the fiber bundle appears on the outermost face of the cleaning pad and can thus conform to the irregular shape of the object to be cleaned. This improved contact enhances the fine dust wiping capability of the cleaning pad.  
         [0021]     According to a second embodiment of the invention, the cleaning pad is additionally provided with a second or bottom sheet. The bottom sheet may include a plurality of strips. The bottom sheet is disposed adjacent the fiber bundle and appears as the outermost surface of the cleaning pad. The bottom sheet increases the wiping ability of the cleaning tool. While the cleaning pad is in use, the cleaning sheet wipes the dust particles, which are then trapped by the fiber bundle.  
         [0022]     In a third embodiment of the invention, the cleaning pad comprises a top sheet and a third or middle sheet, either or both having a plurality of strips, and two fiber bundles. The top sheet and the first fiber bundle are configured in the same manner as previously described for the other embodiments. In this embodiment, the middle sheet may be disposed in between the two fiber bundles thus providing greater strength and durability to the fiber bundles of the cleaning pad. The second or bottom sheet may also be included.  
         [0023]     According to a fourth embodiment the present invention, the top sheet is folded over and bonded to form two outer surfaces and two inner surfaces and a sleeve into which an implementing means is inserted. The two inner surfaces thus formed are facing each other, and the two outer surfaces are facing opposite each other. A pair of fiber bundles are provided, one disposed on each of the outer surfaces, thereby forming dual cleaning surfaces for the cleaning tool. During cleaning operations, the first fiber bundle on a first cleaning surface is usually made to come in contact with the object to be cleaned. However, the back portion also exhibits dust wiping capabilities and may be used as and when required, such as when inserting the cleaning pad into narrow spaces. Also, the cleaning pad can either be removed from the implementing means and rotated to utilize the second cleaning surface, or the handle merely rotated depending upon the configuration of the handle. The handle may also include a rotating member to flip over the cleaning pad.  
         [0024]     In a fifth embodiment of the invention of the present invention, the top sheet is folded in a generally Z-shaped configuration along the longitudinal dimension. The Z-shaped fold creates at least two (2) pockets for insertion of a handle. The top sheet is longitudinally bonded, generally along the Z-shaped fold, with a fiber bundle operatively attached to the top sheet.  
         [0025]     In a sixth embodiment of the present invention, the top sheet is bonded to the fiber bundle by two pairs of bond lines to create two separate and distinct pockets adapted to frictionally engage a handle therein.  
         [0026]     In any of the above configurations of the cleaning pad, a pocket may be formed by folding over of the top sheet. In this pocket, a user may insert his or her hand or a handle may be inserted.  
         [0027]     It is preferred that the fiber bundle is partially joined to the top sheet so that the fiber bundle moves together with the top sheet and hence the individual fibers can be prevented from being entangled or massed. The use of the second or bottom sheet can also help reduce deformation of the individual fibers of the fiber bundle.  
         [0028]     It is preferred that the top sheet, bottom sheet and the middle sheet are made of either a non-woven fabric comprising thermoplastic fibers or a thermoplastic resin film. Preferably, the fiber bundle comprises heat-fusible thermoplastic fibers. All these elements (i.e., top sheet, bottom sheet, middle sheet and the fiber bundle) can be joined to each other easily and quickly by heat fusing. If continuous thermoplastic fibers are used for forming the sheets, the non-woven fabric can be manufactured by a point bonding process, referred to as “spun bond”, to have high rigidity and elasticity. If staple thermoplastic fibers are used for forming the sheets the non-woven fabric can be manufactured by a point bonding  
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0029]     Various other objects, features and advantages of the invention will become more apparent by reading the following detailed description in conjunction with the drawings, which are shown by way of example only, wherein:  
         [0030]      FIG. 1  is a perspective view of a cleaning tool according to a first embodiment of the present invention.  
         [0031]      FIG. 2  is a side view of the cleaning pad of  FIG. 1 .  
         [0032]      FIG. 3  is a perspective view of a cleaning tool according to a second embodiment of the present invention.  
         [0033]      FIG. 4  is a side view of the cleaning pad of  FIG. 3 .  
         [0034]      FIG. 5  is a perspective view of a cleaning tool according to a third embodiment of the present invention.  
         [0035]      FIG. 6  is a side view of the cleaning pad of  FIG. 5 .  
         [0036]      FIG. 7  is a perspective view of a cleaning tool according to a fourth embodiment of the present invention.  
         [0037]      FIG. 8  is a side view of the cleaning pad of  FIG. 7 .  
         [0038]      FIG. 9  is a perspective view of a cleaning pad according to a fifth embodiment of the present invention.  
         [0039]      FIG. 10  is an end view of the cleaning pad of  FIG. 9 .  
         [0040]      FIG. 11  is a perspective view of a cleaning tool according to a sixth embodiment of the present invention.  
         [0041]      FIG. 12  is a top view of a handle that may be used to hold a cleaning pad in accordance with various embodiments of the invention.  
         [0042]      FIG. 13 , consisting of  FIGS. 13A, 13B ,  13 C,  13 D,  13 E and  13 F, shows various embodiments of a handle for the cleaning tool of the present invention. 
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0043]     The following terms have the following meanings as used in the context of the present invention, unless expressly indicated to the contrary:  
         [0044]     “Cleaning tool” refers to devices comprising a cleaning pad and an implementing means, which is intended to be used for cleaning, wiping or sweeping purposes.  
         [0045]     “Cleaning pad” defines the component performing cleaning, wiping or sweeping, and is made of one or more sheets and a fiber bundle.  
         [0046]     “Cleaning face/side/surface” refers to faces/sides/surfaces which are intended to be directed to the surface of the object to be cleaned or swept.  
         [0047]     “Fiber bundle” refers to a loosely bonded sheet of fibers. Examples of fibers include filaments, flat yarns, split yarns and the like. Unless otherwise noted, these fibers are not heat-fused to one another in the fiber bundle.  
         [0048]     “Folded over” refers to folding a sheet in a generally Z- or C-shape such that a space is created between the folds of the sheet.  
         [0049]     “Longitudinal centerline” refers to the axis or direction in the plane of a sheet which generally separates the sheet into left and right transverse portions.  
         [0050]     Strip” refers to a long, relatively narrow piece of a sheet.  
         [0051]     The present invention will now be described with reference to the accompanying drawings, wherein like numerals refer to similar components throughout the various drawings. The drawings are being used to illustrate the inventive concept, and are not intended to limit the invention to the particular embodiments illustrated.  
         [0052]      FIGS. 1 and 2  show a cleaning pad  10  according a first embodiment of the present invention comprising a top sheet  13  and a fiber bundle  16 . As shown in  FIGS. 1 and 2 , the top sheet  13  comprises a cleaning portion  19  and a back portion  22  separated by a fold line  25 ; the fold line  25  having a generally C-shaped configuration. The C-shaped fold of the top sheet  13  forms a pocket  28  between the cleaning portion  19  and the back portion  22 . The fiber bundle  16  is disposed adjacent to the cleaning portion  19 . As shown in  FIG. 2 , the overall length of the top sheet  13  is chosen such that, when folded, the longitudinal end  31   a  of the back portion  22  opposite to the fold line  25  is not coterminous with the longitudinal end  31   b  of the cleaning portion  19  (see also  FIG. 4 ). It will be understood by those skilled in the art that the length of the top sheet  13  can chosen such that the edges are coterminous (see, for example, the embodiment shown in  FIGS. 7 and 8 ) and that the longitudinal end  31   a  can be of any length. Preferably the longitudinal end  31   a  of the back portion  22  extends at least 20%, and preferably at least 50%, along the longitudinal dimension of the cleaning portion  19  as measured from the fold line  25 .  
         [0053]     Preferably, the top sheet  13  and the fiber bundle  16  are bonded together along one or more bond lines  34 . In the embodiment shown in  FIG. 1 , a pair of generally parallel bond lines  34  extends along the longitudinal dimension L-L of the cleaning pad  10 , and may be comprised of either continuous or intermittent bond point(s). In this manner, the pocket  28  can be dimensioned to receive a handle  37  in a snug or interference fit to prevent slippage of the cleaning pad  10  with respect to the handle  37  during use. It will be understood by those skilled in the art that the bond line  34  can be a continuous unbroken line or comprise intermittent bond points along a generally continuous line or line segment.  
         [0054]     The embodiment of  FIG. 1  also includes an optional second fold line  40  to create a flap portion  43 . The flap portion  43  may also include a segmented transverse bond line  46  along transverse direction T-T, which preferably includes an opening  49  for the handle  37 .  
         [0055]     In manufacturing the cleaning pad  10  shown in  FIG. 1 , preferably the folded top sheet  13  is disposed adjacent the fiber bundle  16 , which are then joined together along the longitudinal bond line(s)  34 . Alternatively, the top sheet  13  can be disposed adjacent the fiber bundle  16  with an adhesive material or layer  52  ( FIG. 2 ) therebetween. The adhesive material  52  bonds the fiber bundle  16  to the top sheet  13 . The top sheet  13  can then be folded along the fold line  25  to create the cleaning portion  19  and the back portion  22 . The longitudinal bond lines  34  and/or the transverse bond line  46  can be provided to create the pocket  28  and/or opening  49  for the handle  37 . In addition, preferably a further bond line  55  can be placed along the longitudinal centerline to join the top sheet  13  to the fiber bundle  16 , thereby creating two (2) pockets  28  for the handle  37 .  
         [0056]     Various types of materials used to make the top sheet  13  and the fiber bundle  16  are known to a person of ordinarily skill in the art. For example, the top sheet  13  may be formed of a non-woven fabric which may include thermoplastic fibers (i.e., heat-fusible fibers). Examples of the thermoplastic fibers include: fibers of PE (polyethylene), PP (polypropylene) or PET (polyethylene terephthalate); and conjugated fibers of PE/PET or PE/PP (e.g., conjugated fibers of a core/sheath structure having a core of PP or PET and a sheath of PE). Also, the individual fibers may be constructed of two or more polymer strands co-extruded in a generally side by side configuration. The non-woven fabric may be a thermal bonded non-woven fabric, a spun-bonded non-woven fabrics or a spun-laced non-woven fabric. Alternatively, the top sheet may be formed of a thermoplastic resin film such as a PE film or a PP film. It may also be possible to form the top sheet from a laminated sheet of a non-woven fabric and a resin film.  
         [0057]     Preferably, in order to increase elasticity while still providing a durable construction, the top sheet is formed of a point bonded non-woven material referred to as “spun bond”. Alternatively a through-air bonded non-woven fabric in which the thermoplastic fibers are bonded by using heated air may be used, or a point bonded non-woven fabric made of thermoplastic staple fibers.  
         [0058]     The material of the top sheet preferably should be soft in texture and strong in tensile strength. One particularly suitable material is a spunbond-meltblow-spunbond (SMS) web, available from AVGOL Nonwoven Industries LTD., Holon, Israel. The spunbond layer is made of polypropylene fibers. Such composites provide the advantage of a fabric texture. The non-woven top sheet can also be made of other suitable cloth-like materials, e.g., spun-bond or thermal-bond non-woven web made of either polypropylene, polyethylene, polyester, bi-component fibers (polyethylene/polypropylene or polyethylene/polyester), or any combinations of these fibers. Various multiple layer configurations or fiber denier variations may be used. Another example includes hydro-entangled non-woven webs, which may contain some cotton and/or rayon fibers blending in with thermal-plastic fibers. Cellulose fibers can also be blended in at small percentages to reduce cost. Other materials for forming the top sheet  13  may include polypropylene films, co-extruded films (polyethylene and ethylene vinyl acetate), co-polymer films (polyethylene/polypropylene), and polylaminates (polypropylene non-woven and polyethylene film).  
         [0059]     The fiber bundle is preferably made of a synthetic material, such as polypropylene or polyester, manufactured of numerous individual strands into a tow. The individual fibers of the tow are generally positioned in a direction perpendicular to the longitudinal dimension of the cleaning pad. The bonding of the top sheet  13  to the fiber bundle  16  helps prevent disaggregation or entanglement of the individual fiber strands. The individual fiber strands comprising the tow may be made of any suitable materials such as PE, PP, PET, Ne (nylon), rayon, or combinations thereof. The individual fiber strands of the fiber bundles may contain fibers of different finenesses.  
         [0060]     However, the fibers forming the fiber bundle of the present invention may not be limited to individual strands or filaments. The fiber bundle may also be made of a flat yarns or split yarns. Additionally, the fibers forming the fiber bundle may be crimped. In crimped fibers, the fiber bundle becomes relatively bulky so as to form a structure capable of capturing dust easily by the crimped portions. The individual strands forming the fiber bundle  16  may be joined to the top sheet  13  in any arrangement such that the motion of the individual strands can be restrained to prevent the strands from being excessively separated or entangled, while at the same time permitting the strands to move over the top sheet  13  relatively freely, thereby exhibiting an excellent dust collecting effect.  
         [0061]     Referring now to  FIGS. 3 and 4 , in a second embodiment of the present invention, the cleaning pad  10  comprises the top sheet  13  and the fiber bundle  16 . The top sheet  13  is folded over thus forming the cleaning portion  19  and the back portion  22 . The fold line  25  therebetween results in the formation of an empty space, which creates a pocket  28  along with bond lines  34 . The pocket  28  allows insertion of the handle  37 , or a users hand depending upon the transverse spacing of the longitudinally directed bond lines  31 . In this embodiment, in contrast to that shown in  FIG. 1 , the flap portion is not included. Also shown in  FIG. 3 , a second or bottom sheet  63  is disposed adjacent to the fiber bundle  16  opposite the top sheet  13 . The bottom sheet  63  is preferably made of the same material as the top sheet  13 , thereby simplifying the manufacturing process. In this embodiment, the fiber bundle  16  can first be integrally bonded to the bottom sheet  63 , prior to its mating with the top sheet  13 . Also shown in this embodiment, either or both of the top sheet  13  and the bottom sheet  63  may have a plurality of longitudinally spaced, transverse cuts  66  to form strips  69  (which are shown exaggerated in  FIG. 4  for clarity). The cuts  66  can have any configuration, thus imparting a similar configuration to the strips  69 , such as straight, serrated, curved, elliptical, etc.  
         [0062]     In a third embodiment of the present invention, as shown in  FIGS. 5 and 6 , a cleaning pad  80  comprises a top sheet  83  and two (2) fiber bundles  86   a  and  86   b . Disposed between each of the fiber bundles  86   a  and  86   b  is a third or middle sheet  89 . Preferably, the middle sheet is made of the same material as the top sheet  83 . In this embodiment, the top sheet  83  includes the C-shaped fold line  92 .  
         [0063]     A fourth embodiment of a cleaning pad  100  according to the present invention is show in  FIGS. 7 and 8 . As shown, the top sheet  103  has a length that allows it to be folded along C-shaped fold line  106 , generally at a middle portion to form two outer surfaces  109   a  and  109   b , and two inner surfaces  112   a  and  112   b . In this manner the longitudinal ends  115   a ,  115   b  of each half of the top sheet  103  are generally coterminous. The two inner surfaces  112   a ,  112   b  are in a face-to-face relationship and the outer surfaces  109   a ,  109   b  are oppositely disposed. A pocket  118  is also formed between the inner surfaces  112   a ,  112   b . A pair of fiber bundles  121   a  and  121   b  are disposed adjacent to each of the outer surfaces  109   a ,  109   b . Thus the cleaning pad  100  has two cleaning surfaces. In this way, both surfaces of the cleaning pad  100  exhibit dust wiping capabilities and may be used when cleaning narrow spaces, for example, or the cleaning pad  100  rotated to effectively double the dust cleaning capacity. Each of the cleaning surfaces may also include second sheets, which may or may not include transverse cuts and strips (not shown—see  FIGS. 3 and 4 ).  
         [0064]     Referring now to  FIGS. 9 and 10 , an alternative folding scheme for the top sheet in a fifth embodiment of the cleaning pad  130  according to the present invention is shown. The top sheet  133  is folded over along the longitudinal direction in a generally Z-shaped manner. Similar to the other embodiments, the top sheet  133  includes a cleaning portion  136  and back portion  139 . The Z-shaped top sheet  133  has a central region  142  formed by generally parallel bond lines  145 . The bond lines  145  also preferably bonds the fiber bundle  148  to the cleaning portion  136  of the top sheet  133 . Because bond lines  145  are preferably placed adjacent to the edges of the Z-shaped fold in the central region  142 , a plurality of pockets  151  are formed. A handle  154  having a generally U-shaped portion  157  is inserted into two of the pockets  151  in order to affix the handle  154  to the cleaning pad  130 . This is more clearly shown in  FIG. 10  (which is a view taken along line X-X of  FIG. 9 ). This configuration also more readily allows the handle  154  to be inserted into the pockets  151  of the top sheet  133  from either end. It will be appreciated by those skilled in the art that this fifth embodiment may include multiple fiber bundles  148 , as well as a bottom sheet and/or a middle sheet, as described in reference to embodiments shown in any of the prior embodiments, for example those shown in  FIGS. 3-7 . Moreover, either or all of the top sheet  133  and any other bottom or middle sheet may have strips similar to those shown in  FIGS. 3 and 4 .  
         [0065]     As shown in  FIG. 11 , the cleaning pad  160  comprises a top sheet  163  bonded to the fiber bundle  166  by two (2) pairs of generally parallel bond lines  169  which creates to separate and distinct pockets  172  for receiving a pair of tines  175  of a fork-shaped handle  178 . In this way, the size of the pockets  172  can be more closely controlled so as to more tightly frictionally engage the handle  178 . Moreover, the area between the pockets  172  may be slit, such as along dotted line  181 , to allow the cleaning pad  160  to pass around obstructions, such as the spindles or other supports, and for more effective cleaning of relatively confined areas.  
         [0066]      FIG. 12  illustrates a top view of a handle  1104  that may be used to hold a cleaning pad in accordance with various embodiments of the present invention. Handle  1104  includes at least one support region  1122 , a clip  1124 , a hinge  1126 , and a grip region  1128 . A cleaning pad may be placed on the support region  1122  and can be held to the handle with clip  1124 . Alternatively support region  1122  may be inserted into the holding space of a cleaning pad. The cleaning pad can then be held together with the pad using clip  1124 . Once the cleaning is done, cleaning pad may be disposed and handle  1104  may be reused with another cleaning pad.  
         [0067]     Hinge  1126  helps handle  1104  to be folded so as to reduce the storage space. The handle can then be re-extended from its storage position when it is desired to use the cleaning tool. Grip region  1128  helps a user to hold handle  1104 . Further, handle  1104  may be sized and shaped to enable a user wipe the inside of a car window. Handle  1104  may also be sized and shaped to enable a user wipe the dashboard of a car.  
         [0068]     It is possible to adopt a variety of handle structures to permit the handle to be properly secured by the pocket of the pad while cleaning.  FIGS. 13A-13E  illustrate various embodiments of a handle that may be used to hold a cleaning pad in accordance with various embodiment of the present invention.  
         [0069]      FIG. 13A  illustrates a handle  150  with two arms  153 . Each of the two arms has multiple frictional extensions  156  that are triangular in shape. When the arms are inserted into the holding space of a cleaning pad, the frictional extensions help the handle to hold the cleaning pad by means of frictional engagement. With this type of handle it is preferred that the center bond line discussed above be included to enhance the frictional engagement of the arms  153 .  
         [0070]      FIG. 13B  illustrates a handle  160  with two arms  163 . Each of the two arms has one frictional extension. The extension is triangular in shape  166 .  
         [0071]      FIG. 13C  illustrates a handle  170  with one arm  173 . The arm has multiple frictional extensions that are triangular in shape  176 .  
         [0072]     In  FIG. 13D  there is shown a handle  180  a generally U-shaped insertion portion  183  having a plurality, in this example six (6), of resilient loops  186  for frictional engagement with the interior spaces of the pockets.  
         [0073]     In the configuration of  FIG. 13E  a handle  190  has a grip portion  193  and an insert portion  196 . The insert portion  196  includes at least one, and preferably two, resilient loops  199 . When inserted into a pocket (see  FIG. 7  for example) the resilient loops  199  have a slight interference fit with the interior of the pocket, helping to prevent accidental disengagement of the handle  190  from the cleaning pad.  
         [0074]     These configurations allow the handles to accommodate a wide variety of pocket sizes, thus providing manufacturing flexibility for the cleaning pads such as in the spacing and/or positioning of the bond lines.  
         [0075]     It may be desirable to increase the dust holding capability of the cleaning pad of the present invention, such as by providing an additive to either or both of the cleaning sheet or the fiber bundle. If the cleaning pad is also comprised of the middle or bottom sheets, they too can be provided with the additive. This additive can take many forms which will tend to increase the tackiness of the various components of the cleaning pad. For example, the additive may be a chemical pretreatment in which a paraffin or oil based product is applied to the sheets and/or the fiber bundle. Alternatively, or in addition thereto, the fiber bundle strands may be exposed to a corona treatment to impose and electrical charge to the fiber bundles to impart a static electrical charge which “attracts” dust and dirt particles to the cleaning pad.  
         [0076]     Various other embodiments are possible and are within the spirit of the invention. The aforementioned embodiments are simply provided for explanatory purposes, and are in no way intended to restrict the scope of the invention in any manner. The cleaning pad may be made from various kinds of materials available in the field and known to a person skilled in the art. While specific embodiments of the invention have been described in detail, it will be appreciated by those skilled in the art that various modifications and alterations would be developed in light of the overall teachings of the disclosure. Accordingly, particular arrangements described are meant to be illustrative only and not limiting as to the scope of the invention, which is to be given the full breadth of the appended claims and in any and all equivalents thereof.

Technology Category: a