The present embodiments relate to a stain removal tool integrated into a laundry washing machine.
Typical stain removal devices use mechanical action to brush or rub the stain out of the fabric. However, this practice often may lead to discoloration, fabric wear, or other damage to articles such as, but not limited to, clothing. Thus, there is a need to clean stains with pressurized water associated with a laundry washing machine to reduce damage.
In some embodiments of the invention, for example, a stain removal tool for a laundry washing machine may include a wand positionable between a stowed position and a deployed position relative to a laundry washing machine. The wand may include a water supply head hingedly connected to a water drainage head by a hinge. In some embodiments, when the wand is in the deployed position the water supply head may be hingedly moveable between a closed position and an open position relative to the water drainage head. Further, the water supply head may include one or more nozzles in fluid communication with a water supply line. Further, the water drainage head may be in fluid communication with the one or more nozzles of the water supply head when in the closed position. In various embodiments, the water drainage head may be in fluid communication with one or more outlets.
In some embodiments, the wand may include a through opening when in the closed position between the hinge and at least one of the water supply head or the water drainage head. In various embodiments, the through opening may be defined by one or more L-shaped arms connecting the hinge to at least one of the water drainage head or the water supply head. Further in some embodiments, the wand may include a gasket sealingly engaging the water drainage head with the water supply head when in the closed position. In addition in some embodiments, the water drainage head and the water supply head may be spaced from the hinge by one or more arms. In some embodiments, the water drainage head may include the one or more outlets. In various embodiments, the wand may include one or more downstream drain lines.
In various embodiments, the laundry washing machine with a stain removal tool may include a laundry washing machine having a door defining an opening therein. Further, the opening may include a cover disposed about a wash tub. The laundry washing machine may include a wand positionable between a stowed position and a deployed position relative to the cover. Further, the wand may include a water supply head hingedly connected to a water drainage head by a hinge. Further, when the wand is in the deployed position the water supply head may be hingedly moveable between a closed position and an open position relative to the water drainage head. In some embodiments, the water supply head may include one or more nozzles in fluid communication with a water supply line. In addition in some embodiments, the water drainage head may be in fluid communication with the one or more nozzles of the water supply head when in the closed position. In various embodiments, the water drainage head may be in fluid communication with one or more outlets.
In addition, in some embodiments, one or more arms may connect at least one of the water supply head or the water drainage head to the hinge. Further, the one or more arms may include the one or more outlets of the wand. In various embodiments, the wand may operate at least when the door is open. Further in some embodiments, the water drainage head may include the one or more outlets of the wand and discharge into the wash tub. In various embodiments, the one or more outlets of the wand may be in fluid communication with one or more downstream drain lines. In addition in some embodiments, the wand may further include one or more gaskets defining one or more substantially sealed cavities between the water supply head and the water drainage head when in the closed position. In various embodiments, the wand may further include one or more L-shaped arms connecting at least one of the water supply head or the water drainage head to the hinge, and the one or more L-shaped arms may define a through opening adjacent at least one of the water supply head or the water drainage head when in the closed position.
In some embodiments, the laundry washing machine with a stain removal tool may include a laundry washing machine having a door defining an opening therein. Further, the opening may include a cover disposed about a wash tub. The laundry washing machine may further include a wand positionable between a stowed position and a deployed position relative to the cover. Further, the wand may include a water supply head hingedly connected to a water drainage head by a hinge. Further, when the wand is in the deployed position the water supply head may be hingedly moveable between a closed position and an open position relative to the water drainage head. In some embodiments, the wand may include one or more arms interconnecting the water supply head and the water drainage head to the hinge. In various embodiments, the water supply head may include one or more nozzles in fluid communication with a water supply line. In addition in some embodiments, the water drainage head may be in fluid communication with the one or more nozzles of the water supply head when in the closed position. Further, the water drainage head may be in fluid communication with one or more outlets.
In addition, in some embodiments, the water drainage head may include the one or more outlets of the wand and discharge into the wash tub when in the deployed position. In various embodiments, the wand may include one or more gaskets defining one or more substantially sealed cavities between the water supply head and the water drainage head when in the closed position. Further, the water drainage head may include one or more support members defining one or more openings downstream of the one or more cavities. Further in some embodiments, the one or more arms may include the one or more outlets. In various embodiments, the one or more arms may be L-shaped to define a through opening when in the closed position. In addition in some embodiments, the one or more outlets may be adjacent a front edge of the water drainage head.
These and other advantages and features, which characterize the embodiments, are set forth in the claims annexed hereto and form a further part hereof. However, for a better understanding of the embodiments, and of the advantages and objectives attained through its use, reference should be made to the Drawings and to the accompanying descriptive matter, in which there is described example embodiments. This summary is merely provided to introduce a selection of concepts that are further described below in the detailed description, and is not intended to identify key or essential features of the claimed subject matter, nor is it intended to be used as an aid in limiting the scope of the claimed subject matter.
In the drawings, like reference characters generally refer to the same parts throughout the different views. Also, the drawings are not necessarily to scale, emphasis instead generally being placed upon illustrating the principles of the invention.
Numerous variations and modifications will be apparent to one of ordinary skill in the art, as will become apparent from the description below. Therefore, the invention is not limited to the specific implementations discussed herein.
The embodiments discussed hereinafter will focus on the implementation of the hereinafter-described techniques within a top-load residential laundry washing machine such as laundry washing machine 10, such as the type that may be used in single-family or multi-family dwellings, or in other similar applications. However, it will be appreciated that the herein-described techniques may also be used in connection with other types of laundry washing machines in some embodiments. For example, the herein-described techniques may be used in commercial applications in some embodiments. Moreover, the herein-described techniques may be used in connection with other laundry washing machine configurations. For example, a front-load laundry washing machine that includes a front-mounted door in a cabinet or housing that provides access to a horizontally-oriented wash tub housed within the cabinet or housing may be used. Implementation of the herein-described techniques within a front-load laundry washing machine would be well within the abilities of one of ordinary skill in the art having the benefit of the instant disclosure, so the invention is not limited to the top-load implementation discussed further herein.
Turning now to the drawings, wherein like numbers denote like parts throughout the several views,
As shown in the Figures, the stain removal tool 20 may be positionable relative to the washing machine 10 between a stowed or un-deployed position (not shown) and a deployed position. Although the embodiments of the stain removal tool 20 are shown to deploy from the stowed position, it should be understood that embodiments of the stain removal tool 20 may be interchangeable with other components of the washing machine 10 when needed. As a result in some embodiments, the swapped out or bypassed component of the washing machine may lose its function while the stain removal tool is connected. Moreover for example, the stain removal tool 20 may be operatively connected to the washing machine 10 when needed. When in the deployed position as shown in
As shown in one embodiment, the stain removal tool 20 may be a drawer positioned, manually and/or automatically, between a deployed position and a stowed position in a variety of methods and/or mechanisms. In one embodiment shown in
In some embodiments, the stain removal tool 20 may include a water supply head 30 and a water drainage head 40 moveable relative to each other between the closed position (
The water drainage head 40 includes one or more openings 41 therein to receive upstream water exiting the nozzles 31 and/or cavity 22. Although the openings 41 are defined by a grid like pattern of support members or web 42, it should be understood that the openings and/or support members may be a variety of shapes, sizes, quantities and constructions. As is shown in one embodiment, the openings 41 are rectangular in shape, larger than the nozzles, and/or may receive the output from one or more nozzles. Moreover for example, the support members 42 defining the openings 41 may be non-linear (i.e. wavy) or other shape to reduce the likelihood of a pattern to form on the clothing article due to the water pressure and/or forces applied thereto when the clothing may be pressed or held against the support members during increased water flow. Similarly, the gasket and/or abutment surfaces of the heads 30, 40 therebetween may include a variety of patterns other than the embodiment shown. Although not shown, one or both of the heads 30, 40 may also include a dispenser or outlet for soap or other additive that may enter into the cavity to assist in removing stains. The stain removal tool 20 may also dispense stain removal soap exterior to the cavity in some embodiments if used. The openings 41 of the water drainage head 40 may be upstream of one or more wastewater outlet channels 25 and outlets 26. Although the wastewater outlet channel 25 is shown as within the water drainage head 40, it should be understood that a variety of downstream channels or passageways are contemplated. For example, the wastewater outlet channels 25 may be included within the head 30, 40 and/or arms 50.
In the embodiments shown, the one or more heads 30, 40 may be pivotable relative to each other between an open position and closed position to engage and/or disengage from the article of clothing 1. In some embodiments shown, the heads 30, 40 may include one or more hinges 70 allowing the pivoting of the heads to one or more positions. The water supply head 30 may be hingedly moveable or connected to the water drainage head 40 by a variety of hinge mechanisms allowing pivot. The hinge 70 allows the water supply head 30, if on the upper side of the water drainage head, to pivot upwardly and away from the lower water drainage head 40 to the open position. A hinge 70 may be spaced from the heads 30, 40 by one or more arms 50. The arms 50 may include a proximal end 50a adjacent the hinge 70 and a distal end 50b adjacent the water supply head 30 and/or the water drainage head 40. The one or more arms 50 and/or the one or more heads 30, 40 may define one or more through openings or cavities 80. The through openings 80 may be in some embodiments as the space between the hinge and/or the heads. In other embodiments, the through opening may extend in areas beyond the extent of the arms, such as above, below, between adjacent sets of arms, lateral to the arms, and/or beyond the outer extent of one or more heads. In the embodiment shown, the through opening 80 may be defined by one or more substantially L-shaped arms, (i.e. opposing arms relative to the hinge) in one embodiment shown. For example, the L-shaped arm may extend only from the water supply head 30 in some embodiments. As is shown in the Figures, the smaller portions 52 of the L-shaped arms extend substantially in the opposite directions adjacent the hinge and/or proximal end 50a, then the larger portions 54 extend in the same transverse direction towards their respective head 30, 40 and/or distal end 50b. As shown in
The stain removal tool 20 may include one or more water inlets 24 and/or one or more wastewater outlets 26 to allow water to be in fluid communication with the article of clothing 1. One or more water inlets 24 of the stain removal tool 20 may be in fluid communication with one or more water supply lines 90 of the washing machine 10. The water inlets 24 of the stain removal tool 20 may allow water to flow through one or more water inlet channels 23 of the stain removal tool 20 to communicate with the nozzles 31 and/or cavity 22. In the embodiment shown, the water inlet 24 is positioned adjacent or with the water supply head 30 with the one or more channels 23 within the water supply head connecting with the nozzles 31. In some stain removal tool embodiments 120, 220 as shown in
Several handheld embodiments of the stain removal tool 120, 220 are shown in
In use, the embodiment of the stain removal tool 20 shown in
In use, the handheld or wand type stain removal tool 120, 220 may be stored in the stowed position in a variety of receptacles 17b (i.e. within the cover 17) in the laundry washing machine 10. Soap and stain remover may be applied to the stain on the garment manually by hand, or in some embodiments the device may dispense soap automatically. With the device open, the device is clamped around the stain within the article of clothing, and if needed a portion of the article of clothing may be retained in the through opening 80 to position the stain within the cavity defined by the heads. With the stain removal tool head over and/or within the wash basket by the user, the user may activate the pressurized water by the control panel or switch when the stain removal tool is in the closed position. Although the control panel may be outside the lid as shown, it should be understood that the controls may be adjacent to, i.e. within the lid or cover, or combined with the stain removal tool. For example, the stain removal tool may have one or more activating triggers. It should be understood that the stain removal tool could be operated without the user holding and/or with the lid closed in some embodiments. For example, the stain removal tool have a hook or other temporary holding mechanism to hang the stain removal tool adjacent to or within the wash tub 16 during stain removal. The temperature range or value may be limited in the free draining embodiment of
It some embodiments, the stain removal tool may also include soap dispensing. The soap may be used for the stain removal tool and/or for dispensing soap into the wash tub. Although not shown, for example the slide out drawer stain removal tool 20 may include a soap receptacle for the user to add quantities of soap for the wash tub 16 and/or stain removal. The stain removal tool 20 may include a water supply line used for each of the soap dispensing and the stain removal function, or a separate water lines may be used in some embodiments. In some embodiments, the stain removal tool 20 may be interchanged with one or more parts of a soap dispensing tray when desired to operate the stain removal tool. This may remove the function of the soap dispensing tray until the swappable parts are returned. It is further contemplated that inside the door 12 may be areas to hold a stain removal stick and/or soap for use with the stain removal tool.
In some embodiments, the stain removal tool may include one or more lights therein. The lights may aid the user to observe the stain removal process such as before, during, and/or after water flow. For example, the lights may turn on when the tool is in one or more of the open position, closed position, or deployed position.
In some embodiments, several locking mechanisms may be used to secure the stain removal tool in the closed position when engage the article of clothing. For example, a toggle clamp or vice-grip style lever may be used. Another example, the stain removal tool may magnetically hold the heads together when in the closed position. In some embodiments, such as the handheld wand, the user may clamp the device together by squeezing and/or holding the two arms of the handle together. It should be understood that a variety of latches or temporary retention device may be used in the embodiments. Further, release assists may be used to aid the user to position the stain removal tool into the open position.
In operation, embodiments of the stain removal tool may be operated by one or more control panels 18. As is shown in the embodiments, a control panel 18 may be outside the door 12. However, the control panels may be inside and/or outside the door. In use, the one or more water temperatures, one or more durations of water flow, and/or one or more amounts of soap may be selected by the user. Therefore, in some embodiments, a timer may be used to determine the amount of water dispensed into the cavity 22 of the heads 30, 40. The duration, soap, and/or temperature may be preset, determined upon placing the article of clothing within the stain removal tool, or predetermined. For example, the washing machine and/or stain removal tool may include a slide/knob mechanism to adjust the water temperature or duration. Also, preprogrammed cycles or modes may also be used such as for specific stains such as grass, blood, oil, etc and/or the type of the article such as cotton, polyester, silk, denim, wool, and/or percentages of each material. These cycles may automatically provide the water temperature mixture, duration, programmed spray/soak sequence, and/or select for certain stain/cleaner types, enzymes, or the like.
It should be understood that in some embodiments, laundry washing machine 10 may be, in whole or in part, under the control of a controller (not shown) that receives inputs from a number of components and drives a number of components in response thereto. Controller may, for example, include one or more processors and a memory (not shown) within which may be stored program code for execution by the one or more processors. The memory may be embedded in controller, but may also be considered to include volatile and/or non-volatile memories, cache memories, flash memories, programmable read-only memories, read-only memories, etc., as well as memory storage physically located elsewhere from controller, e.g., in a mass storage device or on a remote computer interfaced with a controller.
A controller may be interfaced with various components, including the aforementioned water supply or drainage lines, soap dispensing, temperature sensor (not shown), and flow sensor (not shown), timer, or the like. In addition, controller may be coupled to a user interface 19 including various input/output devices such as knobs, dials, sliders, switches, buttons, lights, textual and/or graphics displays, touch screen displays, speakers, image capture devices, microphones, etc. for receiving input from and communicating with a user, e.g., as may be disposed in a control panel 18. In some embodiments, a controller may also be coupled to one or more network interfaces, e.g., for interfacing with external devices via wired and/or wireless networks such as Ethernet, Bluetooth, NFC, cellular, and other suitable networks. Additional components may also be interfaced with a controller, as will be appreciated by those of ordinary skill having the benefit of the instant disclosure. Moreover, in some embodiments, at least a portion of controller may be implemented externally from a laundry washing machine, e.g., within a mobile device, a cloud computing environment, etc., such that at least a portion of the functionality described herein is implemented within the portion of the controller that is externally implemented.
In some embodiments, a controller may operate under the control of an operating system and may execute or otherwise rely upon various computer software applications, components, programs, objects, modules, data structures, etc. In addition, controller may also incorporate hardware logic to implement some or all of the functionality disclosed herein. Further, in some embodiments, the sequences of operations performed by controller to implement the embodiments disclosed herein may be implemented using program code including one or more instructions that are resident at various times in various memory and storage devices, and that, when read and executed by one or more hardware-based processors, perform the operations embodying desired functionality. Moreover, in some embodiments, such program code may be distributed as a program product in a variety of forms, and that the invention applies equally regardless of the particular type of computer readable media used to actually carry out the distribution, including, for example, non-transitory computer readable storage media. In addition, it will be appreciated that the various operations described herein may be combined, split, reordered, reversed, varied, omitted, parallelized and/or supplemented with other techniques known in the art, and therefore, the invention is not limited to the particular sequences of operations described herein.
For example, the soap, duration, and/or temperature of the supplying water to the stain removal tool may be manually and/or automatically started and/or ended by the laundry washing machine. The user may manually start and/or end the water cycle to the stain removal tool. For example, an on and/or off switch may be used by the user to operate the water cycle. In other embodiments the water/temperature may be automated. For example, the mere presence of an object within the closed stain removal tool may start a stain removal cycle and/or lack thereof or lid opening may stop a stain removal cycle.
While several embodiments have been described and illustrated herein, those of ordinary skill in the art will readily envision a variety of other means and/or structures for performing the function and/or obtaining the results and/or one or more of the advantages described herein, and each of such variations and/or modifications is deemed to be within the scope of the embodiments described herein. More generally, those skilled in the art will readily appreciate that all parameters, dimensions, materials, and configurations described herein are meant to be exemplary and that the actual parameters, dimensions, materials, and/or configurations will depend upon the specific application or applications for which the teachings is/are used. Those skilled in the art will recognize, or be able to ascertain using no more than routine experimentation, many equivalents to the specific embodiments described herein. It is, therefore, to be understood that the foregoing embodiments are presented by way of example only and that, within the scope of the appended claims and equivalents thereto, embodiments may be practiced otherwise than as specifically described and claimed. Embodiments of the present disclosure are directed to each individual feature, system, article, material, and/or method described herein. In addition, any combination of two or more such features, systems, articles, materials, and/or methods, if such features, systems, articles, materials, and/or methods are not mutually inconsistent, is included within the scope of the present disclosure.
All definitions, as defined and used herein, should be understood to control over dictionary definitions, definitions in documents incorporated by reference, and/or ordinary meanings of the defined terms.
The indefinite articles “a” and “an,” as used herein in the specification and in the claims, unless clearly indicated to the contrary, should be understood to mean “at least one.”
The phrase “and/or,” as used herein in the specification and in the claims, should be understood to mean “either or both” of the elements so conjoined, i.e., elements that are conjunctively present in some cases and disjunctively present in other cases. Multiple elements listed with “and/or” should be construed in the same fashion, i.e., “one or more” of the elements so conjoined. Other elements may optionally be present other than the elements specifically identified by the “and/or” clause, whether related or unrelated to those elements specifically identified. Thus, as a non-limiting example, a reference to “A and/or B”, when used in conjunction with open-ended language such as “comprising” can refer, in one embodiment, to A only (optionally including elements other than B); in another embodiment, to B only (optionally including elements other than A); in yet another embodiment, to both A and B (optionally including other elements); etc.
As used herein in the specification and in the claims, “or” should be understood to have the same meaning as “and/or” as defined above. For example, when separating items in a list, “or” or “and/or” shall be interpreted as being inclusive, i.e., the inclusion of at least one, but also including more than one, of a number or list of elements, and, optionally, additional unlisted items. Only terms clearly indicated to the contrary, such as “only one of” or “exactly one of,” or, when used in the claims, “consisting of,” will refer to the inclusion of exactly one element of a number or list of elements. In general, the term “or” as used herein shall only be interpreted as indicating exclusive alternatives (i.e. “one or the other but not both”) when preceded by terms of exclusivity, such as “either,” “one of,” “only one of” or “exactly one of” “Consisting essentially of,” when used in the claims, shall have its ordinary meaning as used in the field of patent law.
As used herein in the specification and in the claims, the phrase “at least one,” in reference to a list of one or more elements, should be understood to mean at least one element selected from any one or more of the elements in the list of elements, but not necessarily including at least one of each and every element specifically listed within the list of elements and not excluding any combinations of elements in the list of elements. This definition also allows that elements may optionally be present other than the elements specifically identified within the list of elements to which the phrase “at least one” refers, whether related or unrelated to those elements specifically identified. Thus, as a non-limiting example, “at least one of A and B” (or, equivalently, “at least one of A or B,” or, equivalently “at least one of A and/or B”) can refer, in one embodiment, to at least one, optionally including more than one, A, with no B present (and optionally including elements other than B); in another embodiment, to at least one, optionally including more than one, B, with no A present (and optionally including elements other than A); in yet another embodiment, to at least one, optionally including more than one, A, and at least one, optionally including more than one, B (and optionally including other elements); etc.
It should also be understood that, unless clearly indicated to the contrary, in any methods claimed herein that include more than one step or act, the order of the steps or acts of the method is not necessarily limited to the order in which the steps or acts of the method are recited.
In the claims, as well as in the specification above, all transitional phrases such as “comprising,” “including,” “carrying,” “having,” “containing,” “involving,” “holding,” “composed of,” and the like are to be understood to be open-ended, i.e., to mean including but not limited to. Only the transitional phrases “consisting of” and “consisting essentially of” shall be closed or semi-closed transitional phrases, respectively, as set forth in the United States Patent Office Manual of Patent Examining Procedures, Section 2111.03.
It is to be understood that the embodiments are not limited in its application to the details of construction and the arrangement of components set forth in the description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. Unless limited otherwise, the terms “connected,” “coupled,” “in communication with,” and “mounted,” and variations thereof herein are used broadly and encompass direct and indirect connections, couplings, and mountings. In addition, the terms “connected” and “coupled” and variations thereof are not restricted to physical or mechanical connections or couplings.
The foregoing description of several embodiments of the invention has been presented for purposes of illustration. It is not intended to be exhaustive or to limit the invention to the precise steps and/or forms disclosed, and obviously many modifications and variations are possible in light of the above teaching.
Number | Name | Date | Kind |
---|---|---|---|
2254691 | MacLelland, Jr. | Sep 1941 | A |
4926514 | Leuenberger | May 1990 | A |
5402657 | Henry, Jr. | Apr 1995 | A |
6886371 | Arai et al. | May 2005 | B2 |
7225502 | Shenouda | Jun 2007 | B2 |
7313932 | Ryohke et al. | Jan 2008 | B2 |
7478455 | Heim | Jan 2009 | B2 |
8312746 | Perez-Toril Galan | Nov 2012 | B2 |
8549887 | Reid et al. | Oct 2013 | B2 |
20020134117 | Arai | Sep 2002 | A1 |
20050072194 | Ryohke et al. | Apr 2005 | A1 |
20050284190 | Fan et al. | Dec 2005 | A1 |
20060156763 | Vecchi | Jul 2006 | A1 |
20080222817 | Myhra et al. | Sep 2008 | A1 |
20120084927 | Levy | Apr 2012 | A1 |
20160138207 | Del Pos | May 2016 | A1 |
Number | Date | Country |
---|---|---|
2760131 | Jun 2012 | CA |
1271791 | Nov 2000 | CN |
1496426 | May 2004 | CN |
103306099 | Sep 2013 | CN |
203200532 | Sep 2013 | CN |
203462293 | Mar 2014 | CN |
204112094 | Jan 2015 | CN |
105256503 | Jan 2016 | CN |
202005008344 | Sep 2005 | DE |
2172587 | Apr 2010 | EP |
H01223998 | Sep 1989 | JP |
H01284294 | Nov 1989 | JP |
2000061192 | Feb 2000 | JP |
101254899 | Apr 2013 | KR |
20150071904 | Jun 2015 | KR |
1100383 | Jan 2012 | SE |
WO-9706723 | Feb 1997 | WO |
WO9804771 | Feb 1998 | WO |
03018897 | Mar 2003 | WO |
2010072529 | Jul 2010 | WO |
WO2011128745 | Oct 2011 | WO |
2014206485 | Dec 2014 | WO |
2015155787 | Oct 2015 | WO |
Entry |
---|
Machine translation of WO 9804771 A1, dated Feb. 1998. (Year: 1998). |
Transmittal of Related Applications dated Aug. 8, 2018. |
U.S. Patent and Trademark Office, Office Action issued in related U.S. Appl. No. 15/356,290 dated May 16, 2018. |
International Search Report and Written Opinion issued in Application No. PCT/CN2017/102080 dated Nov. 14, 2017. |
International Search Report and Written Opinion issued in Application No. PCT/CN2017/102131 dated Dec. 22, 2017. |
Godrej, Godrej Eon U-Sonic Washing Machine-Detergent Mixer, https://www.youtube.com/watch?v=6B2MwBD1mCg, Oct. 29, 2013. |
Black & Decker, Tide Buzz Ultrasonic Stain Remover, 2016. |
U.S. Patent and Trademark Office, Final Office Action issued in related U.S. Appl. No. 15/356,290 dated Jan. 8, 2019. |
U.S. Patent and Trademark Office, Office Action issued in related U.S. Appl. No. 15/356,290 dated Jul. 3, 2019. |
Number | Date | Country | |
---|---|---|---|
20180142391 A1 | May 2018 | US |