Patent Publication Number: US-2021170319-A1

Title: Filtering device for use with a ceiling fan

Description:
TECHNICAL FIELD 
     The presently disclosed subject matter relates generally to an air filter device for use with a ceiling fan. 
     BACKGROUND 
     Many homes and offices utilize one or more ceiling fans to provide a desired level of cooling and/or air circulation. Specifically, a ceiling fan functions to circulate air in a room to avoid warm air rising to the ceiling and to prevent cooler air from remaining at a lower level of the room. The ceiling fan also improves air flow to more effectively cool or warm people present within the room. Therefore, the ceiling fan comes into contact with a large volume of air while in use. However, the air in homes or businesses typically includes a mixture of plant pollens, mold spores, dust particles, soot, smoke, industrial residue, and other undesirable particulates. For example, pollen and mold spores are common allergens that can cause sinusitis, hay fever, or other respiratory ailments. Similarly, dust suspended in the air may be harmful to people that have emphysema or asthma. Additionally, airborne dust and smoke tend to discolor fabrics, such as curtains and furniture. As the particulates accumulate in a home or office, they are drawn into the ceiling fan and are circulated throughout the room. It would therefore be beneficial to provide an air filter device that effectively reduces or eliminates accumulated dust and particulates in the surrounding air. 
     SUMMARY 
     In some embodiments, the presently disclosed subject matter is directed to an air filtering device. Particularly, the device comprises a longitudinally extending support comprising a top surface and a foundation operably connected to the support. The foundation is defined by a pair of outer arms, each comprising a first end and a second end and a length therebetween, wherein the first ends of the outer arms are rotatably joined together. The term “rotatably joined” refers to the characteristic of being joined together at one end, but still being able to move an arm second end relative to the second end of the opposing arm. The foundation further includes a pair of interior arms, each comprising a first end and a second end, wherein the first ends of the outer arms are rotatably joined together, and wherein the second end of each interior arm is rotatably joined to the length of an outer arm. The foundation comprises an adaptor positioned between the second end of each outer arm, wherein the adaptor can increase or decrease the distance between the second ends of each outer arm. 
     In some embodiments, the device further comprises an air filter sized and shaped to be releasably attached to the top surface of the support. 
     In some embodiments, the air filter is attached to the support through the use of hook and loop closure, magnets, pressure-fit attachment, snap fit attachment, screws, bolts, clips, ties, fasteners, or combinations thereof. 
     In some embodiments, the adaptor includes a first segment and a second segment that cooperate via a telescoping arrangement. 
     In some embodiments, the device further comprises a gripping segment that facilitates movement of the first and second segments. 
     In some embodiments, the first ends of the outer arms are rotatably joined at an acute angle. 
     In some embodiments, the first segment comprises a series of teeth that releasably fit into grooves positioned on the second segment. 
     In some embodiments, the device further comprises a plurality of L-shaped braces. 
     In some embodiments, the presently disclosed subject matter is directed to a kit. Specifically, the kit comprises at least one air filter and at least one device. Each device comprises a longitudinally extending support comprising a top surface, and a foundation operably connected to the support. The foundation is defined by a pair of outer arms, each comprising a first end and a second end and a length therebetween, wherein the first ends of the outer arms are rotatably joined together. The foundation includes a pair of interior arms, each comprising a first end and a second end, wherein the first ends of the outer arms are rotatably joined together, and wherein the second end of each interior arm is rotatably joined to the length of an outer arm. The foundation includes an adaptor positioned between the second end of each outer arm, wherein the adaptor can increase or decrease the distance between the second ends of each outer arm. The at least one air filter releasably attaches to the at least one device. 
     In some embodiments, the air filter comprises fiberglass, paper, fiberglass, paper, foam, woven fabric, activated charcoal, carbon, zeolite, or combinations thereof. 
     In some embodiments, the air filter is electrostatic. 
     In some embodiments, the air filter comprises one or more antimicrobial materials. 
     In some embodiments, the adaptor includes a first segment and a second segment that cooperate via a telescoping arrangement. 
     In some embodiments, the first ends of the outer arms are rotatably joined at an acute angle. 
     In some embodiments, the first segment comprises a series of teeth that releasably fit into grooves positioned on the second segment. 
     In some embodiments, the presently disclosed subject matter is directed to a method of reducing the number of particulates in the air. Specifically, the method comprises attaching a device to at least one blade of a ceiling fan. The device comprises a longitudinally extending support comprising a top surface and a foundation operably connected to the support. The foundation is defined by a pair of outer arms, each comprising a first end and a second end and a length therebetween, wherein the first ends of the outer arms are rotatably joined together. The foundation includes a pair of interior arms, each comprising a first end and a second end, wherein the first ends of the outer arms are rotatably joined together, and wherein the second end of each interior arm is rotatably joined to the length of an outer arm. The foundation comprises an adaptor positioned between the second end of each outer arm, wherein the adaptor can increase or decrease the distance between the second ends of each outer arm. The method comprises releasably attaching an air filter to the support of the device and initiating movement of the ceiling fan blades such that air passes through the air filter. The number of particulates in the air is thereby reduced. 
     In some embodiments, the device is positioned on a top surface of a ceiling fan blade. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The previous summary and the following detailed descriptions are to be read in view of the drawings, which illustrate some (but not all) embodiments of the presently disclosed subject matter. 
         FIG. 1  is a top plan view of a filtration system in accordance with some embodiments of the presently disclosed subject matter. 
         FIG. 2 a    is a top plan view of a filtration device in accordance with some embodiments of the presently disclosed subject matter. 
         FIG. 2 b    is a bottom plan view of the filtration device of  FIG. 2   a.    
         FIG. 3 a    is a top plan view of a device foundation in accordance with some embodiments of the presently disclosed subject matter. 
         FIGS. 3 b -3 d    are fragmentary top plan views illustrating various joint angles in accordance with some embodiments of the presently disclosed subject matter. 
         FIG. 4 a    is a top plan view of a device outer arm in accordance with some embodiments of the presently disclosed subject matter. 
         FIG. 4 b    is a top plan view of a pair of device outer arms attached to device adaptors in accordance with some embodiments of the presently disclosed subject matter. 
         FIG. 5 a    is a top plan view of a device adaptor in accordance with some embodiments of the presently disclosed subject matter. 
         FIG. 5 b    is a top plan view of a device adaptor in accordance with some embodiments of the presently disclosed subject matter. 
         FIG. 5 c    is a side plan view of a device actuator in accordance with some embodiments of the presently disclosed subject matter. 
         FIG. 5 d    is a side plan view of adaptor teeth and grooves in accordance with some embodiments of the presently disclosed subject matter. 
         FIG. 6 a    is a top plan view of a device inner arm in accordance with some embodiments of the presently disclosed subject matter. 
         FIG. 6 b    is a top plan view of a pair of device inner arms attached to outer arms in accordance with some embodiments of the presently disclosed subject matter. 
         FIGS. 6 c  and 6 d    illustrate one embodiment of a pair of device inner arms in use in accordance with some embodiments of the presently disclosed subject matter. 
         FIG. 7 a    is a top plan view of a device support in accordance with some embodiments of the presently disclosed subject matter. 
         FIG. 7 b    is a side plan view of a device support in accordance with some embodiments of the presently disclosed subject matter. 
         FIG. 7 c    is a side plan view of a device support comprising a mount in accordance with some embodiments of the presently disclosed subject matter. 
         FIG. 7 d    is a side plan view of a device support comprising a mount in accordance with some embodiments of the presently disclosed subject matter. 
         FIG. 8 a    is a top plan view of a device support comprising an aperture in accordance with some embodiments of the presently disclosed subject matter. 
         FIG. 8 b    is a top plan view of an assembled device support in accordance with some embodiments of the presently disclosed subject matter. 
         FIG. 8 c    is a top plan view of an assembled device support in accordance with some embodiments of the presently disclosed subject matter. 
         FIG. 9  is a side plan view of a device brace in accordance with some embodiments of the presently disclosed subject matter. 
         FIG. 10 a    is a perspective view of an air filter housing in accordance with some embodiments of the presently disclosed subject matter. 
         FIG. 10 b    is a top plan view of an air filter in accordance with some embodiments of the presently disclosed subject matter. 
         FIG. 10 c    is a side plan view of an indicator in accordance with some embodiments of the presently disclosed subject matter. 
         FIG. 11 a    is side plan view of a conventional ceiling fan. 
         FIG. 11 b    is a bottom plan view of the ceiling fan of  FIG. 11   a.    
         FIG. 12 a    is a top plan view of a ceiling fan blade configured with a device in accordance with some embodiments of the presently disclosed subject matter. 
         FIG. 12 b    is a bottom plan view of a ceiling fan blade configured with a device in accordance with some embodiments of the presently disclosed subject matter. 
         FIG. 12 c    is a top plan view of the ceiling fan blade of  FIG. 12 a    configured with a filter in accordance with some embodiments of the presently disclosed subject matter. 
     
    
    
     DETAILED DESCRIPTION 
     The presently disclosed subject matter is introduced with sufficient details to provide an understanding of one or more particular embodiments of broader inventive subject matters. The descriptions expound upon and exemplify features of those embodiments without limiting the inventive subject matters to the explicitly described embodiments and features. Considerations in view of these descriptions will likely give rise to additional and similar embodiments and features without departing from the scope of the presently disclosed subject matter. 
     Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood to one of ordinary skill in the art to which the presently disclosed subject matter pertains. Although any methods, devices, and materials similar or equivalent to those described herein can be used in the practice or testing of the presently disclosed subject matter, representative methods, devices, and materials are now described. 
     Following long-standing patent law convention, the terms “a”, “an”, and “the” refer to “one or more” when used in the subject specification, including the claims. Thus, for example, reference to “a device” can include a plurality of such devices, and so forth. 
     Unless otherwise indicated, all numbers expressing quantities of components, conditions, and so forth used in the specification and claims are to be understood as being modified in all instances by the term “about”. Accordingly, unless indicated to the contrary, the numerical parameters set forth in the instant specification and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by the presently disclosed subject matter. 
     As used herein, the term “about”, when referring to a value or to an amount of mass, weight, time, volume, concentration, and/or percentage can encompass variations of, in some embodiments +/−20%, in some embodiments +/−10%, in some embodiments +/−5%, in some embodiments +/−1%, in some embodiments +/−0.5%, and in some embodiments +/−0.1%, from the specified amount, as such variations are appropriate in the disclosed packages and methods. 
     The presently disclosed subject matter is generally directed to a device that is releasably or permanently mountable on at least one blade of a conventional ceiling fan to reduce the number of particulates in the air. Specifically, the device cooperates with a filter to remove a wide variety of impurities from the air, such as dust, pollen, smoke, pet dander, and the like.  FIG. 1  illustrates one embodiment of system  5  comprising device  10  and filter  15 . As shown, the device includes support  20  that provides a base for the attachment of the filter. The device further includes adaptor  25  that cooperates with a series of joints  30  to allow the size and shape of the support to be customized for a particular ceiling fan blade, as described in more detail below. Advantageously, the device can be coupled to a wide variety of ceiling fan blades to enable an associated filter to clean the air as the fan blades rotate, thereby reducing the number of particulates in the air. 
       FIGS. 2 a  and 2 b    illustrate one embodiment of device  10  configured to mount on a standard ceiling fan blade. As shown, the device includes support  20  that allows for the attachment of filter  15 . The device further comprises foundation  26  that includes adaptor  25 , inner arms  36 , and outer arms  37  that move relative to each other via joints  30  to allow for proper sizing on a ceiling fan blade, as set forth in more detail herein below. 
       FIG. 3 a    illustrates one embodiment of foundation  26 . As shown, the foundation can include a plurality of outer arms  37 , a plurality of inner arms  36 , and adaptor  25 . The term “plurality” refers to two or more. The inner arms, outer arms, and adaptor are connected through a series of joints. The term “joint” refers to a structure that joins or connects two or more elements and holds them in place, typically by a fastener (such as a screw, bolt, or rivet). The joint can be a rotational joint, configured to rotatably couple a first element to a second element. For example, one arm can rotate relative to a second arm. In other embodiments, both elements can rotate relative to each other. The connecting joint allows for angle  60  between a pair of elements to be increased or decreased as desired by the user. In some embodiments, the angle can be acute (e.g., less than about 90 degrees), as shown in  FIG. 3 b   . In other embodiments, angle  60  can be obtuse (e.g., greater than 90 degrees), as shown in  FIG. 3 c   . In some embodiments, angle  60  can be about 90 degrees, as shown in  FIG. 3 d   . Thus, the angle between two inner arms, two outer arms, an outer arm and an adaptor, and/or an inner arm and an outer arm can be acute, obtuse, or configured at an approximate right angle. 
     Each outer arm  37  comprises first and second ends  70 ,  71  with length  72  therebetween, as shown in  FIG. 4 a   . Each outer arm can be configured in any desired size to allow for use with a wide variety of ceiling fan blades. For example, outer arm  37  can have length  72  of about 3-20 inches (e.g., at least about/no more than about 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or 20 inches). The outer arm can have any thickness, such as about 0.1-2 inches (e.g., at least/no more than about 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, or 2 inches). However, it should be appreciated that the dimensions of each outer arm are not limited. 
     As shown in  FIG. 4 a   , each outer arm also includes top face  73  and opposing bottom face  74 . The top face is positioned towards the external environment (i.e., the room ceiling), while the bottom face is positioned adjacent to a ceiling fan blade when the device is assembled. 
     First end  70  of each outer arm is attached the first end of an adjacent outer arm at connecting joint  30   a,  as illustrated in  FIG. 4 b   . The arms can be attached to the joint through any known mechanism, such as (but not limited to) the use of adhesive, welding, thermoforming, screws, bolts, magnets, and the like. In some embodiments, the angle between the first and second outer arms at connecting joint  30   a  is acute (e.g., less than about 90, 80, 70, 60, 50, 40, 30, 20, or 10 degrees). 
     Second end  71  of each outer arm is attached to one end of adaptor  25  at adaptor joint  30   b.  The term “adaptor” refers to any element that allows the distance between opposing adaptor joints (and thus the width of the device) to be increased or decreased. For example, in some embodiments, the adaptor can include segments that can be added or removed to lengthen or shorten the distance between the adaptor joints. Alternatively, the adaptor can include a telescoping arrangement allowing adjacent segments to be increased or decreased in length. 
       FIG. 5 a    illustrates one embodiment of adaptor  25  comprising first segment  75  and second segment  76 . Each segment includes first end  77  attached to adaptor joint  30   b  using any known method, such as (but not limited to) the use of welding, adhesive, thermoforming, and the like. The first segment includes interior compartment  80  and open second end  78  that allows at least a portion of the second segment to be housed within the compartment. In this way, the first and second segments can cooperate via a telescoping arrangement. Thus, the outer circumference of first segment  75  can be slightly greater than the outer circumference of the second segment. In this way, the second segment can be slidably received within interior compartment  80  of the first segment to adjust the overall width of the device (e.g., to couple the device to a corresponding ceiling fan blade). Particularly, when the user desires to narrow the distance between the two adaptor joints, the second segment can be advanced towards the first segment, such that a portion of the second segment is housed within interior compartment  80 . When the user desires to widen the distance between the two adaptor joints to fit on a relatively wide ceiling fan blade, at least a portion of the second segment is removed from interior compartment  80 . Although depicted as curved in  FIG. 5 a   , the adaptor can have any desired configuration (e.g., straight, angled). 
     In some embodiments, adaptor can include gripping segment  79  that allows a user to easily maneuver the adaptor as desired, as shown in  FIG. 5 b   . The gripping segment can be attached to a portion of second segment  76  such that they move together. Alternatively, gripping segment  79  can be attached to adaptor joint  30   b  such that when the gripping segment is moved toward or away from the opposing adaptor joint, the second segment (also attached to the adaptor joint) moves into and out of interior compartment  80 . The gripping segment can optionally include ledge  85  that allows a user to easily grasp the gripping segment and maneuver the second segment into and out of the interior compartment to widen and narrow the distance between adaptor joints  30   b , as illustrated by Arrow A. Ledge  85  can have any desired configuration. 
     In some embodiments, adaptor  25  can include an actuator that allows the first and second segments to move relative to each other. As shown in  FIG. 5 c   , actuator  90  can be configured as a button that when depressed, allows second segment  76  to move within the interior compartment of first segment  75  to increase or decrease the adaptor length. Once the button is no longer depressed, the first and second segments are stationary in position (i.e., the second segment cannot move relative to the first segment). In some embodiments, the actuator can be spring loaded such that when the actuator is pressed or activated, the device is at its widest point. First and second segments  75 ,  76  can then be squeezed together to reduce the adaptor length through the telescoping arrangement of the arms. The term “spring-loaded” refers to a device having at least one element that can be biased or urged into at least one position by a spring. 
     In other embodiments, the second segment can include a series of teeth  81  that fit into corresponding grooves  82  along the length of the first segment, as shown in  FIG. 5 d   . The teeth can be moved to adjacent grooves through the application of pressure by the user. When no pressure is applied, each tooth is stationary within a corresponding groove and does not move. In this way the first and second segments are maintained in position until a user desires to alter the adaptor. 
     It should be appreciated that the presently disclosed subject matter is not limited and any known actuator can be used, such as (but not limited to) buttons, switches, sliders, knobs, teeth, grooves, and the like. 
     The dimensions of the adaptor can be adjustably configured to be about the same size as a corresponding ceiling fan blade with regard to thickness and span from one fan blade edge to the other. Therefore, the adaptor length can be adjusted to fit any desired fan blade width. 
     As set forth above, the device foundation also includes at least two interior arms  65  that function to reinforce support  20 . Each interior arm comprises first and second ends  66 ,  67  and length  68  therebetween, as shown in  FIG. 6 a   . The interior arms can be configured in any desired size to allow for use with a wide variety of ceiling fan blades. For example, interior arms  65  can have length  68  of about 1-15 inches (e.g., at least about/no more than about 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or 15 inches). However, it should be appreciated that the dimensions of the arms are not limited and can be configured with a length outside the given range. 
     As shown in  FIG. 6 a   , each interior arm also includes top face  91  and opposing bottom face  92 . The top face is positioned towards the external environment (i.e., the room ceiling), while the bottom face is positioned adjacent to a ceiling fan blade when the device is assembled. 
     First end  66  of each interior arm is attached to the first end of an adjacent interior arm at inner joint  30   d,  as shown in  FIG. 6 b   . Second end  67  of each interior arm is joined along length  72  of a corresponding outer arm at middle joint  30   c.  Each interior arm can be connected at joints  30   c  and  30   d  using any known method (e.g., the use of adhesives, magnets, welding, screws, clips, bolts, and the like). 
     The inner arms reinforce support  20  and further enable the support to be properly positioned when the adaptor is adjusted. For example,  FIGS. 6 c  and 6 d    illustrate one embodiment wherein joints  30   d  and  30   c  allow the support to be properly positioned in the center of the device as the adaptor is adjusted. As the adaptors move outer arms  37  away from each other (as illustrated by Arrows B), inner arms  36  are adjusted to make up for the increased distance between the outer arms. Thus, inner joint  30   d  and the inner arms are moved towards adaptor  25  to compensate for the additional length between the outer arms, as shown by Arrow C in  FIG. 6   d.    
       FIGS. 7 a  and 7 b    illustrate one embodiment of support  20  that provides for the attachment of filter  15 . As shown in  FIG. 7 a   , the support includes length  21 , width  22 , and thickness  23 . The term “length” refers to the maximum dimension of the support in the longitudinal direction. The term “width” refers to the maximum dimension of the support perpendicular to the length. The term “thickness” refers to the longest dimension of the support perpendicular to both the length and width. 
     The support is configured to extend away from the adaptors up the center of the fan blade. In some embodiments, the device is configured such that support  20  is approximately centered about the midline of the fan blade. 
     The support can be configured in any desired size to allow for use with a wide variety of ceiling fan blades. For example, the support can have length  21  of about 5-20 inches (e.g., at least about/no more than about 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or 20 inches). Similarly, the support can have a width  22  of about 1-10 inches (e.g., at least/no more than about 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 inches). The support can have any thickness  23 , such as about 0.1-2 inches (e.g., at least/no more than about 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, or 2 inches). However, it should be appreciated that the dimensions of support  20  are not limited and can be configured with a length, width, and/or thickness outside the given ranges. 
     As shown in  FIG. 7 b   , the support also includes top face  40  and opposing bottom face  41 . The top face is positioned towards the external environment (i.e., the room ceiling), while the bottom face is positioned to face a ceiling fan blade when the device is assembled. 
     The top face of the support can include mount  45  that allows for the connection of air filter. Mount  45  can include any mechanism that allows a filter to releasably attach to the top face of support  20 . In this way, the filter can be removed on demand, such as for replacement or cleaning. Filter  15  can be joined to mount  45  using any desired mechanism, such as (but not limited to) a snap fit arrangement, mechanical attachments (e.g., screws, rivets, clasps, clips, hooks), VELCRO®, hinges, and the like. Thus, a filter can be attached to support  20  and replaced with a fresh filter after a desired amount of time. Alternatively, filter  15  can be removed, cleaned, and reconfigured on the disclosed device. 
     In some embodiments, the mount can extend about the full length of support  20 , as shown in  FIG. 7 c   . Alternatively, the mount can be configured to span a portion of the length of the support, as shown in  FIG. 7   d.    
     In some embodiments, support  20  can include aperture  50 , as illustrated in  FIG. 8 a   . The term “aperture” refers to an opening of any shape or size that passes through the support. The aperture can be used to adjust the position of the support relative to rest of the device. For example, as shown in  FIGS. 8 b  and 8 c   , the aperture allows the length of the support to be adjusted as desired by the user (i.e., to fit a particular ceiling fan blade). As shown, set screw  51  (or any other suitable element) can pass through the aperture to connect the support to inner joint  30   d  at any location within the aperture. In this way, the position of the support can be adjusted as needed. In the embodiment of  FIG. 8 b   , the support can be further attached to connector joint  30   a  using any desired method (e.g., the use of magnets, screws, adhesive, welding, clips, bolts, ties, VELCRO®, pins, screws, etc.). In this embodiment, the support can be further attached to inner joint  30   d  to provide stability for the support. 
     In some embodiments, filter  15  is disposed substantially perpendicular to support  20 . In this way, the filter has full exposure to air circulating from the ceiling fan. However, the presently disclosed subject matter is not limited and the filter can be disposed at any angle relative to support  20 . 
     Optionally, the device further includes a pair of braces  95  configured on the bottom face of the device, as shown in  FIG. 9 . For example, the braces can be positioned on the bottom side of adaptor joint  30   b  (i.e., to directly contact a ceiling fan blade). The braces can be sized and shaped to wrap around opposing fan blade edges. Thus, in some embodiments, the braces can be configured in an “L” shape. However, the configuration of braces  95  are not limited so long as they enable releasable attachment to a ceiling fan blade. 
     The braces can include any material that grips or prevents sliding, such as (but not limited to) rubber, polyurethane, polymeric material, and/or any other material with a high coefficient of friction. In this way, device  5  is prevented from slipping down the ceiling fan blade when the blade is in motion. 
     In some embodiments, at least a portion of the bottom surface of the device (e.g., the surface in contact with the ceiling fan blade) can include a layer of material to protect the fan blade from damage and/or to ensure a snug fit of the device. The material can include any soft and/or padded element, such as (but not limited to) fabric, rayon, polyester blend, foam, cardboard, paper, felt, or combinations thereof. The material can further provide additional non-skid characteristics to support  20 , preventing movement of the device during use of the ceiling fan. 
     Filter  15  is not limited and any known filter capable of attaching to support  20  can be used. For example, in some embodiments, the filter can include a frame with an open grid to allow air to pass therethrough, as shown in  FIG. 10 a   . Air filter  15  can be constructed from any one of a wide variety of porous filter materials capable of capturing dust and other particulates that are suspended in the air. Suitable materials can thus include (but are not limited to) fiberglass, paper, foam, woven fabric, activated charcoal, or combinations thereof. Alternatively or in addition, filter  15  can include one or more sorbent filter materials that absorb gases and odors, such as (but not limited to) carbon, zeolite, and the like. 
     In some embodiments, filter  15  can be electrostatic with self-charging woven panels  16 , as shown in  FIG. 10 b   . The term “electrostatic” refers to the sudden flow of electricity between two electrically charged objects caused by contact, an electric short, or dielectric breakdown. Particularly, the flow of air through filter  15  creates an electrostatic charge resulting from friction as the air flows through the filter. Dust and other particulates are attracted to the filter surface and are held due to the electrostatic charge. 
     Optionally, filter  15  can include one or more antimicrobial materials to inhibit the growth of mold, fungi, bacteria, and other airborne contaminants. Any known antimicrobial material can be used. 
     The materials used to construct filter  15  are self-supporting, such that the filter does not collapse or lose integrity during use. For example, in some embodiments, the filter can include a cardboard or plastic support that houses the filter materials. When the filter is upstanding, it is positioned to filter the maximum amount of air. If the filter was to deform or collapse during fan rotation, it would adversely affect the ability to filter air. 
     In some embodiments, filter  15  is disposable and constructed for a one-time use. However, the presently disclosed subject matter also includes embodiments wherein the filter is capable of being cleaned to allow the user to reuse it a desired number of times. 
     Optionally, device  5  can include indicator  100 , such as a noise or light that lets the user know when the air filter has been properly attached and is in operating condition, as shown in  FIG. 10 c   . In some embodiments, the indicator can designate when it is time to clean or change filter  15 . The indicator can be positioned on any surface of device  5  or filter  15 . 
     Device  5  can be constructed from any rigid material. The term “rigid material” refers to a material that is solid and does not readily bend. Suitable rigid materials can therefore include (but are not limited to) wood, resin, metal, plastic, or combinations thereof. In some embodiments, the materials used to construct device  5  are lightweight, having a weight of less than about 2 pounds. Advantageously, a lightweight device will provide minimal to no drag on the corresponding ceiling fan during use. 
     Device  5  can be constructed using any known method, such as (but not limited to) a coextrusion process, welding, and the like. 
     In use, the disclosed device can be easily retrofitted to at least one blade of a ceiling fan to extract particulates from the air.  FIGS. 11 a  and 11 b    illustrate one embodiment of a conventional ceiling fan  105  comprising a plurality of blades  110  attached to central core  115 . The fan is connected to a ceiling through hub  120 . 
     To attach device  5 , the user positions the device on the top surface of at least one fan blade  110  (i.e., towards the ceiling). Device support  20  extends down the length of the blade, as shown in  FIG. 12 a   . Typically, the device will be positioned on the top surface of the blade, e.g., facing the ceiling. In this way, viewers from above do not see the full device for a more aesthetic appearance. The only portion of the device that is visible from underneath the fan is brace  95 , as shown in  FIG. 12 b   . However, the presently disclosed subject matter is not limited and the device can be configured on either surface of fan blade  75 . 
     The device can be positioned at a desired location on the fan blade and does not move (e.g., braces  95  maintain the device in proper position). The device can therefore be positioned on at any location on the fan blade, so long as it is properly secured. 
     Either before or after positioning the device on fan blade  110 , air filter  15  is releasably attached to support  20  as shown in  FIG. 12 c   . Any attachment mechanism can be used, such as a snap-fit closure, magnets, mechanical closures (clips, clasps, screws, bolt, and the like). 
     It should be appreciated that device  5  can be assembled and mounted on one or a plurality of ceiling fan blades. Thus, in some embodiments, opposing blades can each include a device. 
     In some embodiments, a fan blade opposing the device can include a weight to keep the ceiling fan blades in balance. Alternatively, an additional device can be assembled on the opposing fan blade as a counterbalance. 
     After the device has been installed on one or more ceiling fan blades, a user can activate the fan to begin rotation of blades  110 . As the fan moves, air is drawn upward to flow through filter  15 , trapping particulates therein. Particularly, the fan blades rotate in a plane substantially perpendicular to the airflow caused by the fan. An area of relatively high pressure will be formed on the bottom surface of the fan blades (when the fan is operating in a counter-clockwise direction), and an area of relative low pressure will be formed on the upper surface of the fan blades. As a result, a considerable volume of air will penetrate filter  15 , allowing the airborne particulates in the volume of air to be trapped within the filter. In this way, device  5  can remove pollen, allergens, hair, dust mites, pet dander, and/or dead skin cells. The device therefore allows for continuous filtration of the air and accomplishes desirable air circulation. The filter will therefore perform so long as the ceiling fan blades are turning. 
     It should be appreciated that after a period of use, air filter  15  will accumulate a volume of dust and other particulates such that the filter may need cleaning or replacement. Device  5  is configured to allow the filter to be readily and easily removed upon demand. In some embodiments, the filter can be cleaned without removing it from the device. The disclosed device therefore reduces the amount of dust and particulates in the air. 
     In some embodiments, device  5  can be provided as a kit that additionally includes one or more air filters  15 . For example, the kit can include a plurality of air filters for use in various locations throughout a home or business. Thus, a variety of different air filters can be included, such as the use of an antimicrobial filter for use in a kitchen in addition to standard filters for dust. 
     Although discussed regarding a ceiling fan, the presently disclosed device can also be used with any of a number of other conventional types of rotating fans, such as box fans or fans that rest on the floor. 
     The presently disclosed device offers many benefits when compared to conventional air filter units. For example, prior art air filters are often bulky and noisy. In comparison, the disclosed device is essentially soundless and offers a streamlined design. 
     In addition, the disclosed device can be removably attached to the top or bottom surface of a conventional ceiling fan blade. As a result, the device is portable, and can be moved as desired by the user. 
     The disclosed device effective reduces or eliminates harmful particulates from a room. Accordingly, the health and safety of people living and working within the space is improved. 
     Device  5  takes up virtually no living or working space of a home or workplace. Further, when positioned on the top surface of a ceiling fan blade, the device is barely noticeable and is therefore aesthetically pleasing. 
     The disclosed device enhances the overall atmosphere of a room where it is installed and used by circulating and filtering air, while generating virtually no background noise. 
     While this invention has been particularly shown and described with references to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made herein without departing from the spirit and scope of the invention as defined by the appended claims.