Not applicable.
The invention is related generally to buckets or pails and, more specifically, to an improved handle and handle assembly comprising the handle and an associated attachment apparatus, the attachment apparatus designed for connecting the handle to a bucket or pail, particularly a bucket used by window cleaners on high-rise buildings.
Buckets or pails with handles are known to the art. However, those persons employed as window cleaners or window washers on high rise buildings use buckets containing cleaning liquid or water that must meet certain requirements of the trade. The window washer generally is seated in what is known in the art as a “boatswain chair”. The high-rise window washer accesses windows by swing stage or boatswain chair. The two systems that use the boatswain chair are the Manual Boatswain Chair and the Control Descent System. The Manual Boatswain Chair system uses block and tackle to raise or lower the window washer to the windows. The Control Descent System uses gravity by starting at the roof and rappelling over the side. The rate of descent is controlled using a descent device. The descent device regulates the movement down the rope by way of friction. The window washer can descend down to the window and then lock the device until ready to descend to the next window. In most cases, the window washer hangs his bucket on one or more snap hooks suspended from the side of the boatswain chair so that the bucket is readily accessible.
Prior art buckets typically used for hanging on a boatswain chair have several drawbacks. First, to keep the weight down, the buckets usually are plastic with thin, flexible wire handles. The bucket is attached to the boatswain chair by fastening the wire handle onto a single snap hook, or to double snap hooks on the boatswain's chair. A conventional wire handle can shift or slide along a single snap hook and tip or spill. With double snap hooks, the normal arc of the wire handle must be distorted to fasten to the snap hooks. Furthermore, the weight of the liquid in the bucket can cause the handle to pull out or deform the handle or cause the plastic to crack and fail around the handle. Since conventional handles are mounted on the outside of the bucket, the weight of the liquids in the bucket can cause the sides of the bucket to collapse inwardly at the points where the handle is mounted to the bucket.
It is possible with a properly designed bucket handle and centered snap hook to suspend a bucket from the single snap hook in a manner that eliminates the sliding, tipping and spilling from the bucket that is especially dangerous to window washers and bystanders below the washer. U.S. Pat. No. 6,352,169 describes a rigid, inverted V-shaped handle made of aluminum rod for use with double sling chairs. The V-shaped handle is mounted on a bucket and configured so that the bucket is suspended from a snap hook, which is fastened to the V-shaped handle at the apex of the inverted V-shape. The rigid construction and V-shaped configuration of the handle prevents the sliding and tipping of the bucket that occurs when the standard wire handle is used for suspension from the single snap hook.
However, the bucket handle design of U.S. Pat. No. 6,352,169 and similar designs require that the handle be secured to the bucket with a nut and threaded shaft configuration that adds machining and assembly costs. In addition, these configurations require means to ensure that the nut does not loosen or fall free from the handle, which could cause the bucket to tip or spill during use.
Further, it is desirable for buckets being used in most applications and in particular for window washing buckets, that the bucket handle freely rotate about the bucket at the bucket mounts. This allows the bucket to rest at a natural equilibrium and eliminates the undesirable rotational torque to the handle and the bucket that would otherwise result from a bucket swinging from a handle rigidly attached to the bucket, or attached in a way that would hinder at least in part the free rotation of the bucket relative to the bucket. Unfortunately, the bucket handle design of U.S. Pat. No. 6,352,169 and similar designs hamper the rotation of the bucket relative to the handle at the handle mounts. A need therefore remains for an improved bucket handle design for window washer's buckets that is easier to assemble and therefore more cost effective to manufacture, and that allows the bucket handle to more freely rotate relative to the body of the bucket.
In addition, it is often desirable to secure a lid to the upper lid of a bucket that has a handle mounted to the inner surface of a bucket. Unfortunately, bucket handles that are attached to the inner surface of a bucket, such as for example the handle of U.S. Pat. No. 6,352,169, interfere with and preclude the placement and securing of a bucket lid to the bucket's upper lip. A need therefore remains for an improved bucket handle assembly design for window washer's buckets and buckets for other applications that is easier to assemble and therefore more cost effective to manufacture, and that allows the bucket handle to be positioned for ready access, yet also be storable within the bucket so as not to interfere with the placement of a lid atop the bucket's upper lip.
The illustrative embodiments of the present invention are shown in the following drawings which form a part of the specification:
Corresponding reference characters indicate corresponding parts throughout the several views of the drawings.
While the invention will be described and disclosed here in connection with certain preferred embodiments, the description is not intended to limit the invention to the specific embodiments shown and described here, but rather the invention is intended to cover all alternative embodiments and modifications that fall within the spirit and scope of the invention as defined by the claims included herein as well as any equivalents of the disclosed and claimed invention.
When describing elements or features and/or embodiments thereof, the articles “a”, “an”, “the”, and “said” are intended to mean that there are one or more of the elements or features. The terms “comprising”, “including”, and “having” are intended to be inclusive and mean that there may be additional elements or features beyond those specifically described.
In referring to the drawings, a first representative embodiment of the novel bucket handle assembly 10 of the present invention is shown generally in
Referring to
In this first representative embodiment, the bucket handle assembly 10 comprises a rod-shaped handle 12, two rectangular inner mounting plates 14, two rectangular outer mounting plates 16, two rectangular slide plates 18, and four screws 20 and matching nuts 22 for securing the plates together and to the sidewall W of the bucket A when assembled (see
Each of the slide plates 18 has a large keyhole orifice 30 positioned substantially in the center of the plate in a longitudinal orientation, and a single smaller circular orifice 32 on each side of the keyhole orifice 30. Each of the keyhole orifices 30 has a large circular head 34 of the same diameter as the large circular orifices 24 in the mounting plates 14 and 16, and a narrower linear slot 36 extending longitudinally or laterally away from the head 34. For each of the slide plates 18, the head 34, the linear slot 36 and the orifices 32 are all oriented collinearly along the length of the centerline of the plate, and the head 34 of the keyhole orifice 30 is oriented to align with the circular orifices 24 of the mounting plates 14 and 16 when the handle assembly 10 is fully assembled as shown. Likewise, the smaller orifices 32 are oriented to align with the first set of smaller orifices 26 of the mounting plates 14 and 16 when the handle assembly 10 is fully assembled as shown.
The handle 12 has a uniform, round cross-section, is replaceable on the bucket A, and is made from metal stock such as ⅜″ (three eighths inch) aluminum rod. The handle 12 includes a generally “V” shaped central portion 38, and two matching attachment ends 40 that extend radially and coaxially in a horizontal fashion away from opposing sides of the central portion 38. A radial detent or groove G is formed near the distal end of each attachment end 40.
Each end of the handle 12 is removably mounted to the sidewall W of the bucket A using a matching set of each of the inner and outer mounting plates 14 and 16. The mounting plates 14 and 16 are positioned on each side of the sidewall W over their corresponding holes H1, H2 and H3, and fastened together with sets of screws 20 and nuts 22, with the sidewall W sandwiched between the mounting plates 14 and 16 and the holes H1, H2 and H3 aligned with their corresponding orifices 24 of both plates. Preferably, the holes H are positioned such that the upper end of the mounting plates 14 and 16 rest against, but do not extend above, the outer lip of the rim R when the handle assembly 10 is fully assembled as shown.
When the handle assembly 10 is property assembled on the bucket A as seen in
A second representative embodiment of the novel bucket handle assembly 100 of the present invention is shown generally in
In this second representative embodiment, the bucket handle assembly 100 also comprises a rod-shaped handle 112, two rectangular inner mounting plates 114, two rectangular outer mounting plates 116, two rectangular slide plates 118, and four screws 120 and matching nuts 122 for securing the plates together and to the sidewall W of the bucket A when assembled (see
The mounting inner plates 114 each have a set of five circular orifices 124, 126 and 128 formed therein, with the orifices 126 and 128 having the same diameter and orifice 124 being somewhat larger in diameter. The orifices 124, 126 and 128 are oriented collinearly along the length of the centerline of the plate, with the orifices 124 in the plates 114 positioned substantially at the center of the plate, the first set of orifices 26 positioned on each side of and equidistant from the orifice 24, and the second set of orifices 28 positioned further yet from the orifice 24 and likewise equidistant there from. The outer mounting plates 116 have four matching orifices 126 and 128 formed therein, with the orifices 126 and 128 having the same diameter. The orifices 126 and 128 are oriented to match the holes H4 and H5 when the plates 114 and 116 are properly positioned over the sidewall W of the bucket A as shown.
Each of the slide plates 118 has a large keyhole orifice 130 positioned substantially in the center of the plate in a longitudinal orientation, and a single smaller circular orifice 132 on each side of the keyhole orifice 130. Each of the keyhole orifices 130 has a large circular head 134 of the same diameter as the large circular orifices 124 in the mounting plates 114, and a narrower linear slot 136 extending longitudinally or laterally away from the head 134. For each of the slide plates 118, the head 134, the linear slot 136 and the orifices 132 are all oriented collinearly along the length of the centerline of the plate, and the head 134 of the keyhole orifice 130 is oriented to align with the circular orifices 124 of the mounting plates 114 when the handle assembly 100 is fully assembled as shown. The smaller orifices 130 are oriented to align with the first set of smaller orifices 126 of the mounting plates 114 and 116 when the handle assembly 100 is fully assembled as shown.
The handle 112 has a uniform, round cross-section, is replaceable on the bucket A, and is made from metal stock such as ⅜″ (three eighths inch) aluminum rod. The handle 112 includes a generally “V” shaped central portion 138, and two matching attachment ends 140 that extend radially and coaxially in a horizontal fashion away from opposing sides of the central portion 138. A radial detent or groove G is formed near the distal end of each attachment end 140.
Each end of the handle 112 is removably mounted to the inner surface of the sidewall W of the bucket A using a matching set of each of the inner and outer mounting plates 114 and 116. The mounting plates 114 and 116 are positioned on each side of the sidewall W over their corresponding holes H4 and H5, and fastened together with sets of screws 120 and nuts 122, with the sidewall W sandwiched between the mounting plates 114 and 116 and the holes H4 and H5 aligned with their corresponding orifices 124 of both plates. Preferably, the holes H4 and H5 are positioned such that the upper end of the mounting plates 114 and 116 rest against, but do not extend above, the outer lip of the rim R when the handle assembly 100 is fully assembled as shown.
When the handle assembly 100 is property assembled on the bucket A as shown in
When the handle 112 is thus oriented in the bucket A, the slide plate 118 is positioned over the inner mounting plate 114 with the head 134 of the keyhole orifice 132 aligned with the end of the attachment end 140 and the linear slot 136 in a horizontal orientation. The slide plate 118 is then pressed against the inner mounting plate 114 such that the linear slot 136 of the keyhole orifice 132 aligns with the groove G in the attachment end 140 against the outer surface of the inner mounting plate 114. It will be noted that with the plates in this position, the orifices 130 will not align with the orifices 126 and holes H4. Instead, it is necessary to slide the slide plate 118 laterally over the groove G until the orifices 130 do align with the orifices 126 and the holes H4. Sets of screws 120 and nuts 122 are then used to secure the slide plate 118 to the inner mounting plate 114 as shown. As can be appreciated, this configuration firmly secures the handle 112 to the bucket A, while allowing the handle 112 to rotate relatively freely about the axis defined by the attachment ends 140 and the orifices 124 and 134.
A third representative embodiment of the novel bucket handle assembly of the present invention is shown generally at 200 in
This third representative embodiment the bucket handle assembly 200 comprises a generally cylindrical handle 212 with a first attachment end 214, a second attachment end 216 opposite the first attachment end 214, the handle 212 being shaped by a number of bends. The handle 212 has a uniform, round cross-section, is replaceable on the bucket A, and is made from metal stock such as ⅜″ (three eighths inch) aluminum rod. A first bend 218 at the center of the handle 212 has an inner angle of approximately 135 degrees and divides the handle 212 into two mirrored halves. On one side of the first bend 218, a second bend 220 with an inner angle of approximately 145 degrees is positioned approximately one third of the distance from the first bend 218 to the first attachment end 214. A third bend 222 with a reverse angle of approximately 115 degrees is positioned approximately one inch from the first attachment end 214. On the other side of the bend 218 is a fourth bend 224 with an inner angle of approximately 145 degrees positioned opposite and mirroring the second bend 220. Similarly, a fifth bend 226 with a reverse angle of approximately 115 degrees is positioned approximately one inch from the second attachment end 216 and opposite and mirroring the third bend 222. Further, the entire handle 212 is planar. That is, all of the bends 218, 220, 222, 224 and 226 reside in a single plane.
As can be seen, the length of the handle 212 spanning from the third bend 222 and the first attachment end 214 and the length of the handle 212 spanning from the fifth bend 226 and the second attachment end 216 are coaxial. In this way, the handle 212 rotates about the axis between the first attachment end 214 and the second attachment end 216.
The handle assembly 200 also includes two identical inner mounting plates 230, two matching identical outer mounting plates 232, and eight sets of screws 234 and matching nuts 236 for securing the plates together and to the sidewall W of the bucket A when assembled (see
As best shown in
Although not shown in detail in the Figures, a matching pair of radial grooves G3 and G4 are likewise formed near the distal end of the second attachment end 216. The grooves G3 and G4 are sized and shaped as receptacles for a third “C” clip C3 and a fourth “C” clip C4, respectively, the clips C3 and C4 being sized and shaped to fit snugly yet releasably in the third groove G3 and fourth groove G4, respectively. Of course other retainer fittings, such as for example “E” clips or slot clips, can be used instead of “C” clips. As with the first and second grooves G1 and G2, when attaching second attachment end 216 of the handle 212 to the sidewall W, the second attachment end 216 is extended from the inside of the bucket A through the large circular orifice 238 of inner mounting plate 230 and outer mounting plate 232, and matching hole H in the sidewall W just below the rim R with the third groove G3 positioned near the inner surface of the sidewall W and the fourth groove G4 positioned near the outer surface of the sidewall W. The third clip C3 is then snapped into the third groove G3 and the fourth clip C4 is then snapped into the fourth groove G4. In this way, the distal portion of the handle 212 in proximity to the second attachment end 216 is held in place in the sidewall W by the clips C3 and C4, yet is able to rotate with little or no resistance within the hole H. Notably, again, the distance between the clips C3 and C4 is greater than the combined thicknesses of the inner mounting plate 230, the outer mounting plate 232 and the sidewall W, such that a degree of “play’ exists between the clips C3 and C4 and the sidewall W is free to slide inward and outward along the second attachment end 216 between the clips.
Referring now to
As can be appreciated, a correlation exists between the extent to which the handle 212 overlaps the rim R and the degree to which the rim R can be distorted when the bucket A sidewall W is squeezed inward. That is, while the handle 212 must extend at least in part over at least part of the rim R when the rim R is in its relaxed state, the handle 212 can only extend beyond the rim R to a point where the maximum temporary distortion of the rim R is sufficient to allow the handle 212 to rotate below the rim R.
A representative portion of a fourth embodiment 300 of the novel handle assembly of the present invention is shown at
The groove G5 is sized and shaped as a receptacle for a “C” clip C5, the clip C5 being sized and shaped to fit snugly yet releasably in the groove G5. Of course other retainer fittings, such as for example “E” clips or slot clips, can be used instead of “C” clips. The distance between the ledge L and the clip C5 is slightly wider than the thickness of the sidewall W of the bucket A, such that a degree of “play’ exists between the clip C5 and the ledge L, and the sidewall W is free to slide inward and outward along the first attachment end 314 between the clip C5 and the ledge L.
As can be seen, when attaching the first attachment end 314 of the handle 312 to the sidewall W, the first attachment end 314 is extended from the inside of the bucket A through the large circular orifice 338 of inner mounting plate 330 and outer mounting plate 332, and matching hole H in the sidewall W just below the rim R with the ledge L positioned near or against the inner surface of the sidewall W and the groove G5 positioned near the outer surface of the sidewall W. The clip C5 is then snapped into the groove G5. In this way, the distal portion of the handle 312 in proximity to the first attachment end 314 is held in place in the sidewall W by the clips C1 and C2, yet is able to rotate with little or no resistance within the hole H.
A representative portion of a fifth embodiment of the novel handle assembly of the present invention is shown at 400 in
A sixth embodiment of the novel handle of the present invention is shown at 500 in
The first attachment end 514 and the second attachment end 516 are coaxial about a common central axis X. The first attachment end 514 terminates in a flat face 528 perpendicular to the axis X. Likewise, the second attachment end 516 terminates in a flat face 530 perpendicular to the axis X. A threaded orifice 532 extends inward from the face 528 into the first attachment end 514 along the axis X. Similarly, a threaded orifice 534 extends inward from the face 530 into the second attachment end 516 along the axis X. Hence, the handle 500 can rotate about the axis X at the first and second attachment ends 514 and 516.
A screw 536 releasably attaches to the threaded orifice 532 in the first attachment end 514. A washer and lock washer for the screw 536 are shown as additional components in
A circumferential plate or stop 548 and extends radially from the side of the first attachment end 514 approximately half-way between the third bend 522 and the face 528. The distance between the stop 548 and the head 540 of the screw 536 when fully engaged with the first attachment end 514 is slightly wider than the thickness of the sidewall W of the bucket A, such that a degree of “play’ exists between the stop 548 and the head 540 of the screw 536, and the sidewall W is free to slide inward and outward along the first attachment end 514 between the stop 548 and the head 540 of the screw 536. Similarly, a circumferential plate or stop 550 and extends radially from the side of the second attachment end 516 approximately half-way between the fifth bend 526 and the face 530. The distance between the stop 550 and the head 546 of the screw 542 when fully engaged with the second attachment end 516 is slightly wider than the thickness of the sidewall W of the bucket A, such that a degree of “play’ exists between the stop 550 and the head 546 of the screw 542, and the sidewall W is free to slide inward and outward along the first attachment end 514 between the stop 550 and the head 546 of the screw 542.
Referring to
As can be appreciated, the length of the handle 500 spanning from the third bend 522 and the first attachment end 514 and the length of the handle 512 spanning from the fifth bend 526 and the second attachment end 516 are coaxial. In this way, the handle 500 rotates about the axis between the first attachment end 514 and the second attachment end 516.
While I have described in the detailed description several configurations that may be encompassed within the disclosed embodiments of this invention, numerous other alternative configurations, that would now be apparent to one of ordinary skill in the art, may be designed and constructed within the bounds of my invention as set forth in the claims. Moreover, the above-described novel mechanisms of the present invention, shown by way of example at 10, 100, 200300, 400 and 500 can be arranged in a number of other and related varieties of configurations without departing from or expanding beyond the scope of my invention as set forth in the claims. Hence, it will be apparent to those skilled in the art that various changes and modifications can be made in the novel bucket handle and handle assembly without departing from the scope of the invention.
For example, it is not necessary that the mounting plates 14 and 16, 114 and 116, 214 and 216, 314 and 316, 414 and 416, 514 and 516, and the slide plates 18, 118, 218, 318, 418 and 518, and the slide plates 18 and 118, have a particular shape or thickness or size such as the curved rectangular shapes depicted in the disclosed embodiments, so long as each performs its intended function of securing the handle to the sidewall W of the bucket A as disclosed.
Further, it is not necessary that the mounting plates 14 and 16, 114 and 116, 230 and 232, 330 and 332, 430 and 432, and the slide plates 18 and 118 be secured to each other and the sidewall W of the bucket A by a specific set of four screws and nuts, such as the screws 20, 120 and 234 and the nuts 22, 122 and 236. Rather, the mounting plates and slide plates can be secured by as few as a single screw with or without a nut, or by various other types fasteners well known in the art, including for example clamps, cotter pins, welds, various glues and adhesives, rivets and brads.
By way of further example, while the depictions of the handle assembly 200 show first bend 218 in the handle 212 resting atop the rim R in
In addition, while the sixth embodiment depicts (see
Additional variations or modifications to the configuration of the novel mechanism of the present invention may occur to those skilled in the art upon reviewing the subject matter of this disclosure. Such variations, if within the spirit of this disclosure, are intended to be encompassed within the scope of this invention. The description of the embodiments as set forth herein, and as shown in the drawings, is provided for illustrative purposes only and, unless otherwise expressly set forth, is not intended to limit the scope of the claims, which set forth the metes and bounds of my invention. Accordingly, all matter contained in the above description or shown in the accompanying drawings should be interpreted as illustrative and not in a limiting sense.
This application derives and claims priority from U.S. provisional application 62/262,554 filed Dec. 3, 2015 and U.S. provisional application 62/297,413 filed Feb. 19, 2016, both of which U.S. provisional applications are incorporated herein by reference.
Number | Name | Date | Kind |
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4365725 | Pfeifer | Dec 1982 | A |
4896415 | Bock | Jan 1990 | A |
5445425 | Lyver | Aug 1995 | A |
5816439 | Lovell et al. | Oct 1998 | A |
6352169 | Foster | Mar 2002 | B2 |
7780036 | Splain | Aug 2010 | B2 |
20060289711 | Wilschut et al. | Dec 2006 | A1 |
Entry |
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International Search Report from corresponding International application PCT/US2017/018392 dated Jul. 19, 2017. |
Written Opinion from corresponding International application PCT/US2017/018392 dated Jul. 19, 2017. |
Number | Date | Country | |
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20170158376 A1 | Jun 2017 | US |
Number | Date | Country | |
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62262554 | Dec 2015 | US | |
62297413 | Feb 2016 | US |