Articulating dust collector for ceiling fan blades

Abstract

The device includes a substantially cylindrical oblong rigid extension member having a distal end upon which is formed an articulatable jaw structure, and an opposite proximal end including a hand-operable trigger for actuating the jaw structure between open and closed positions. A collector sock made from a pliable sheet material can be mounted upon the jaw structure so that the sock enwraps the entire fan blade. The inner surface of the sock surrounding its open end includes a plush surface which can conform to uneven or embossed surfaces on the fan blades so that the sock scrapes off and captures dust and other debris from the fan blade.

Description

FIELD OF THE INVENTION

This invention relates to household cleaning items, and more particularly to devices for removing dust from furniture and other household surfaces such as ceiling fans.

BACKGROUND

Ceiling fan blades often accumulate dust and other debris. The blades are difficult to clean because ceiling fans are often located in relatively inaccessible areas. Thus dusting them can take an inordinate amount of time compared to dusting other, more accessible items in the household. This difficulty often leads the house keeper to forego dusting until a later time, which in turn leads to an even greater accumulation of dust. Greater accumulation of dust can lead to the creating of unsightly dust globs which are difficult for dusters to capture. Uncaptured dust globs can fall from the fan soiling the floor, carpeting or other furniture items beneath the fan. Cleaning with some devices such as a feather duster may dislodge dust globs to fall to the floor.

Another important difficulty in dusting ceiling fan blades concerns safety. Fans are often located high above the floor and may only be accessible by ladder. Housekeepers are often tempted to use more rapid but less secure means for reaching the fan blades. Balancing on wobbly stepping stools, or swivellable chair seats while vigorously wiping the blades can lead to falls causing serious bodily injury.

Home, U.S. Pat. No. 5,369,836 discloses a mechanism for cleaning fan blades including a flexible tubular sleeve which uses moveable flat metal plates at the open end of the sleeve engaged by a spring-loaded, hand-held maneuvering portion in order to fit the sleeve over the blade and withdraw the sleeve from the blade to clean it. One problem is flat plates appear to be curved either vertically or horizontally such that the middle of the plates do not oppose one another. This can tend to reduce the effectiveness of any scraping motion across the surface of the blade. Another problem is that the maneuvering portion appears to be biased toward the open position requiring the user to adjust their grip to determine the force between the plates while translating the device across the blade. Such complex maneuvering can only be expected by skilled and experienced users. Lastly, the Home device does not allow for adjustment to engage blades beyond extreme distances for the user.

Therefore, there is a need for a ceiling fan duster which addresses one or more of the above problems or inadequacies.

SUMMARY

The principal and secondary objects of the invention are to provide an improved ceiling fan dust collector. These and other objects are achieved by providing a duster device which articulates to enwrap the fan blade and capture the dust.

In some embodiments the device provides biased contact to both sides and edges of the fan blade in one motion. In some embodiments the device includes a detachable sock commensurately shaped and dimensioned to engage over substantially the entire length of the blade. In some embodiments the sock can be made from an inexpensively manufactured, biodegradable, disposable fabric material. In some embodiments, the sock can include electrostatically charged micro fibers oriented to contact the fan blade surfaces during use.

The original text of the original claims is incorporated herein by reference as describing features in some embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a diagrammatic perspective view of an articulating dust collector for ceiling fan blades according to an exemplary embodiment of the invention being operated by a user.

FIG. 2 is a diagrammatic front, top, left perspective view of the articulating dust collector including the collector sock shown in dashed lines.

FIG. 3 is a diagrammatic partial cross-sectional front view of the articulating dust collector of FIG. 2.

FIG. 4 is a partial, diagrammatic front, top, left perspective view of the jaw structure of an articulating dust collector showing various sock attachment features.

FIG. 5 is a partial, diagrammatic front, top, left perspective view of the jaw structure of a sockless articulating dust collector according to an alternate exemplary embodiment of the invention.

FIG. 6 is a diagrammatic partial cross-sectional front view of the jaw structure of an articulating dust collector according to an alternate exemplary embodiment having a telescoping extension arm.

FIG. 7 is a diagrammatic partial cross-sectional front view of the jaw structure of an articulating dust collector according to an alternate exemplary embodiment having a telescoping and angularly adjustable extension arm.

DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

In this specification, the references to top, bottom, upward, downward, upper, lower, vertical, horizontal, sideways, lateral, back, front, etc. can be used to provide a clear frame of reference for the various structures with respect to other structures while the articulating dust collector is being used by a user to clean a fan blade as shown in FIG. 1, and not treated as absolutes when the frame of reference is changed, such as when the collector is laying on the ground unused.

The term “substantially” can be used in this specification because manufacturing imprecision and inaccuracies can lead to non-symmetricity and other inexactitudes in the shape, dimensioning and orientation of various structures. Further, use of “substantially” in connection with certain geometrical shapes, letter shapes, such as “U-shaped” and orientations, such as “parallel” and “perpendicular”, can be given as a guide to generally describe the function of various structures, and to allow for slight departures from exact mathematical geometrical shapes, letter shapes, and orientations, while providing adequately similar function. Those skilled in the art will readily appreciate the degree to which a departure can be made from the mathematically exact geometrical references.

Referring now to FIGS. 1-3 there is shown a user 1 cleaning a blade 3 of a ceiling fan 4 using an articulating dust collector 2 according to an exemplary embodiment of the invention. The articulating dust collector includes an openable jaw structure 5 located on the distal end of a hollow, oblong, extension arm 6. The proximal end of the extension arm has a handle 7 which can be grasped by the single hand of the user, and a trigger 8 for activating a jaw opening and closing mechanism within the collector. A collector sock 9 has its open end 10 secured to the jaw structure.

The jaw structure 5 includes a pair of opposing, parallelly spaced apart paddles 11,12 that separate from each other when the jaw structure is in the open position and come together in the closed position. The bottom paddle 11 can be fixed by a pair of support struts 13 to a housing 14 secured to the distal end of the extension arm 6. A second pair of support struts 15a,15b extend between the top paddle 12 and a pair of moveable flippers 17a,17b hingedly attached to the housing. The support struts of the upper paddle 15a,15b are fixed the opposite lateral edges of the upper paddle and hingedly connect to the laterally distal ends 16a,16b of the flippers.

The flippers 17a,17b can be driven to swing between a lower position shown in solid lines in the drawing, and an upper position shown in dashed lines in the drawing, by a drive mechanism carried within the collector 2. The drive mechanism includes a rigid post 20 extending from the handle 7 to the housing 14 through the central lumen 21 of the extension arm 6. The proximal end of the post can be hingedly connected 24 to the trigger 8. The distal end of the post can have an array of axially spaced apart teeth 22 engaged by the geared laterally proximal ends 23a,23b of the flippers. In this way when the trigger is depressed 25, the post moves downwardly 26, in an axially proximal direction. This causes the toothed distal end of the post to move across the laterally proximal ends of the flippers, causing the flippers to rotate about pivot points 27a,27b, driving the flipper distal ends toward their upper position 28a,28b. This causes the top paddle 12 to move upwardly a distance D, in the axially distal direction, to an upper position 29, so that the jaw is in its open position. A spring 30 biases the trigger and thus the jaw toward the closed position.

In this way, referring back to FIG. 1, when the jaw is in the open position, the open end of the attached sock 9 forms an open maw 31. The maw can then be journaled endwise over the cantilevered fan blade 3 until the blade is substantially fully contained within the sock. In other words, the maw can be moved from the free end 32 of the blade to its attached end 33. Once the sock opening has reached the attached end the user can release the trigger, allowing the maw to close, contacting the sock opening against the blade. When the maw is withdrawn from the blade in the opposite journaling motion, the internal surfaces of the sock scrape against the blade and dislodge and capture the dust and other debris that has accumulated on the blade. The process can be repeated to dislodge stubborn debris. Because the jaws are biased toward the closed position, less skill is required to provide an adequate clamping force on the top and bottom surfaces of the blade. In this way, the device can both dust and capture dust globs which do not adhere to the inwardly facing sock surfaces surrounding the maw.

The paddles 11,12 can be substantially planar so that in the closed position the jaw can simultaneously contact a top continuous surface, indicated by dotted line 80, of the blade 3 extending across the blade between the substantially parallel lateral edges 81,82, and a bottom continuous surface 84 extending across the undersurface of the blade between the lateral edges. The bottom continuous surface is substantially parallel to the top continuous surface. In this way the entire top and bottom surfaces of the blade can be contacted during the journaling motion.

As shown in FIG. 4, the open end 10 of the sock 9 can be releasably secured to the jaw structure 5 of the collector 2 in various ways. A first way involves the sock having a circumferential elastic band 35 or drawstring surrounding the opening which when folded back upon itself cinches around the base of the jaw paddles near the supporting struts (only 15b shown). Alternately, patches 37 of Velcro brand hook-and-loop fabric fastener, or other common fasteners. In this way the sock can be detached from the collector for cleaning, such as in a clothes washing machine, or disposal, and replaced with a clean sock. The sock can be made from a durable, flexible sheet material such as fabric, or other commonly available, and readily manufacturable sheet material. Alternately, the sock can be made from an inexpensive, disposable sheet material such as breathable polypropylene fabric. The inner surfaces of the maw can include panels 38a,38b of electrostatic, dust adhering fibers to help capture fine particles of dust.

Referring now to FIG. 5, there is shown an alternate embodiment of articulating dust collector 40 wherein the inner surfaces of the upper and lower paddles 41,42 are solid and can carry pair of opposing panels 43a,43b of electrostatic, dust adhering fibers. In this embodiment the dust will adhere to the panels and there is no need for the sock. This adaptation of the device can be used for more frequent uses where only a light film of dust has accumulated.

Referring now to FIG. 6 there is shown an alternate embodiment of articulating dust collector 50 which allows for a telescoping extension arm 51. The extension arm can include two rigid pieces, namely, a top piece 55 and a base piece 57. The top piece includes a distal end connected to the jaw structure housing 64, and a proximal end connected to the base piece.

The axial length of the extension arm 51 can be adjusted by telescopingly moving the axial location of the top piece 55 with respect to the base piece 57. The relative positioning of the top and base pieces can be releasably fixed by tightening a screw-based compression collar 61 engaging the split threaded distal end 62 of the base piece, which clamps the inner surface of the base piece onto the outer surface of the top piece.

The movement of the flippers 54a,54b between a retracted position 68 and an extended position 69 corresponding to the closed and open positions of the jaw respectively, are controlled similarly to the embodiment of FIG. 3. The flippers are hingedly mounted to a housing 65 secured to the distal end of the top piece 55 of the extension arm 51. An axially movable toothed post 66 engages the geared proximal ends 67a,67b of the flippers. The flippers are biased toward the retracted position by a compression spring 70 urging the toothed post upward in the distal direction. The bias of the post can be overcome by a force applied to the post by a cable 71 running within a coiled, flexible conduit 72 connected to the trigger 73 in the handle 60.

Referring now to FIG. 7 there is shown an alternate embodiment of articulating dust collector 90 which allows for a telescoping extension arm 91 and which also provides for an angularly adjustable jaw structure 93. This embodiment is similar to the collector of the embodiment of FIG. 6, but with an important difference. Specifically, in this embodiment, the top piece can be subdivided into a distal sub-piece 95a connected to the jaw structure housing 96 and a proximal sub-piece 95b. The distal sub-piece can be connected in an angularly adjustable manner to the proximal sub-piece by a joint 92. The proximal sub-piece 95b can have a distal end connected to the joint, and a proximal end telescopingly engaging the base piece 97 similarly to the embodiment of FIG. 6.

For clarity, the jointed connection 92 between the extension arm pieces shows the jaw structure pivoting in the same plane of movement as the flippers 94a,94b. Those skilled in the art will readily recognize that other planes of movement may be preferable for enhanced function of the collector.

The joint 92 can be a ball-in-socket-type, universal joint, which allows limited angular adjustment 99 of the position of the distal sub-piece 95a, and thus the jaw structure 93, with respect to the base piece 97, and thus the handle. The joint can have a friction fit so that it retains its angular positioning unless sufficient force is used to alter it, or can use other well known means to secure its orientation.

It is important to note that apart from using a top piece that is unitary as in the embodiment of FIG. 6, or a top piece that is subdivided into jointedly connected distal and proximal sub-pieces as in the embodiment of FIG. 7, the remaining components of the embodiments can be identical, thereby significantly reducing manufacturing costs.

Although the above utilitarian aspects have been described in connection with a hand-manipulable ceiling fan blade duster, it shall be understood that the duster can easily be adapted to include automated and/or motorized elements.

While the preferred embodiments of the invention have been described, modifications can be made and other embodiments may be devised without departing from the spirit of the invention and the scope of the appended claims.

Claims

1. An apparatus for dusting a ceiling fan blade having a pair of substantially parallel lateral edges, said apparatus comprises: an elongated member;a pliable sock comprising an open end;an articulatable jaw structure connected to a first end of said member, said articulatable jaw structure being moveable between a closed position and an open position;said jaw structure comprising a pair of opposing inner surfaces;said opposing inner surfaces being oriented to simultaneously contact a top continuous surface extending across said blade between said substantially parallel lateral edges, and a bottom continuous surface extending across said blade between said substantially parallel lateral edges when said jaw is in a closed position;an activation trigger connected to an opposite end of said member;a jaw manipulation mechanism responsive to said trigger for moving said jaw between said open and closed position;wherein said open end of said sock is releasably mounted to said jaw structure, whereby said open end forms a maw when said articulatable jaw structure is in said open position;wherein said maw includes inwardly facing sock surfaces forming said opposing inner surfaces of said jaw;wherein said maw is shaped an dimensioned to slip over said fan blade in an end-wise manner; and,wherein said elongated member comprises: a top piece;a base piece;said top piece connected to said jaw structure; and,said top piece telescopingly connected to said base piece.

2. The apparatus of claim 1, wherein said top continuous surface and said bottom continuous surface are substantially planar and substantially parallel.

3. The apparatus of claim 1, wherein said sock further comprises a closed end opposite said open end.

4. The apparatus of claim 3, wherein said closed end is reversably openable.

5. The apparatus of claim 1, wherein said sock comprises a bag portion defining an internal chamber shaped and dimensioned to accommodate substantially the entire length of said blade therein.

6. The apparatus of claim 1, wherein said jaw manipulation mechanism is biased toward said closed position.

7. The apparatus of claim 1, wherein said sock comprises a patch of dust attracting material located on at least one of said inwardly facing sock surfaces.

8. The apparatus of claim 1, wherein said apparatus further comprises a handle located at said opposite end, and wherein said trigger is a spring-loaded, hand-manipulable lever.

9. The apparatus of claim 1, wherein said articulatable jaw structure comprises a pair of substantially planar stratiformly arranged, parallelly separatable paddles.

10. The apparatus of claim 9, wherein said paddles are overcomably biased toward each other.

11. The apparatus of claim 1, which further comprises said top piece being subdivided into a distal sub-piece and a proximal sub-piece; and, a joint formed between said distal sub-piece and said proximal sub-piece.

12. The apparatus of claim 11, wherein said joint allows angular movement of said jaw structure with respect to said trigger.