The present invention relates to a shoe cover machine, and more particularly to an arrangement for holding shoe covers and a shoe cover dispenser device that is convenient for people to wear the shoe covers.
With the development of the economy and the improvement of people's living standards, people's requirements for the environment are getting higher and higher. A clean home environment or a clean external environment will help to improve comfortness and happiness in life.
In addition, especially with the development of science and technology, the manufacturing of some products must be completed in a dust-free workshop. Therefore, people must wear dust-free clothing and clean disposable shoe covers before entering the dust-free workshop to avoid any pollution to the dust-free workshop.
Therefore, the demand for shoe cover assembly and shoe cover dispenser devices has arisen at the historic moment. Shoe cover assembly and shoe cover dispenser device are widely used in furniture, factories, model houses, hospitals, dust-free workshops and other places that require environmental cleanliness. At present, there are many styles of existing shoe cover dispensers, but most of the structural designs are not reasonable enough. When installing shoe covers, some shoe cover dispensers are complicated in process and difficult in operation, or require certain special technology to be able to install shoe covers on the shoe cover dispenser, which is inconvenient for people to fill or replace the shoe covers on the shoe cover dispenser at any time. During the wearing of some shoe covers, user needs to manually pull the shoe covers out, which is inconvenient for wearing the shoe covers.
The invention is advantageous in that it provides a shoe cover dispenser device for holding multiple pairs of shoe covers in an orderly manner, thereby facilitating the integration storage of multiple pairs of shoe covers.
Another advantage of the invention is to provide a shoe cover dispenser device that enables the multiple pairs of shoe covers to be adjacently connected to each other, so as to ensure that after one shoe cover is dispensed, an adjacent shoe cover is driven to be pulled to enlarge its opening, so there is no need to separately open the subsequent shoe cover. In other words, the shoe cover dispenser device can automatically open the shoe cover in turn, thereby facilitating wearing the shoe covers.
Another advantage of the invention is to provide a shoe cover dispenser device that is convenient to install a plurality of the shoe covers thereon, so as to reduce the difficulty of installing shoe covers.
Another advantage of the invention is to provide a shoe cover dispenser device which installs and opens the shoe cover through different locking assemblies cooperated with each other. The locking mode can be achieved by different locking assemblies, so the shoe cover dispenser device of the present invention can have a variety of different fitting and deformation modes.
Another advantage of the invention is to provide a shoe cover dispenser device which can ensure that after one shoe cover is taken out, the subsequent shoe cover will not retract due to elastic contraction force.
Additional advantages and features of the invention will become apparent from the description which follows and may be realized by means of the instrumentalities and combinations particular point out in the appended claims.
According to the present invention, the foregoing and other objects and advantages are attained by a shoe cover dispenser device comprising a frame, an installation assembly installed on the frame, wherein the installation assembly comprises two installation arms for installing the plurality of shoe cover; and a locking assembly installed on the frame and is capable of locking said two installation arms of said installation assembly.
The locking assembly comprises a first locking member and a second locking member, wherein each of the two installation arms comprises a first end portion and a second end portion, wherein the first locking member is arranged to detachably lock the first end portion of each of the two installation arms, and the second locking member is arranged to detachably lock the second end portion of each of the two installation arms.
Still further objects and advantages will become apparent from a consideration of the ensuing description and drawings.
These and other objectives, features, and advantages of the present invention will become apparent from the following detailed description, the accompanying drawings, and the appended claims.
The following description is disclosed to enable any person skilled in the art to make and use the present invention. Preferred embodiments are provided in the following description only as examples and modifications will be apparent to those skilled in the art. The general principles defined in the following description would be applied to other embodiments, alternatives, modifications, equivalents, and applications without departing from the spirit and scope of the present invention.
As shown in
In detail, as shown in
The locking assembly 30 comprises a first locking member 31 and a second locking member 32, wherein the installation assembly 10 comprises a first end portion 101 and a second end portion 102, wherein the first end portions 101 of the two installation arms 11 and 12 are locked by the first locking member 31 so that the second end portions 102 of the two installation arms 11 and 12 can be free end portions, so that the shoe cover 90 can be removed from the second end portions 102 of the installation assembly 10.
Correspondingly, the second locking member 32 can lock the second end portions 102 of the two installation arms 11 and 12, so that the installation assembly 10 is fixed to the frame 20 and the first end portion 101 of the two installation arms 11 and 12 can be free end portions which are convenient to install the shoe covers 90 on the installation assembly 10.
In other words, when installing the shoe covers 90, firstly, the second locking member 32 of the locking assembly 30 locks the second end portions 102 of the installation assembly 10, and the first locking member 31 is operated to release the first end portions 101, so that the installation assembly 10 is fixed to the frame 20 and the first end portions 101 of the installation assembly 10 are free end portions, thereby facilitating to install the shoe covers 90 on the installation assembly 10. After the shoe covers 90 are installed in the installation assembly 10, the first end portions 101 of the installation assembly 10 are locked by the first locking member 31 of the locking assembly 30, and then the second locking member 32 is opened, so that the second end portions 102 of the installation assembly 10 are released from the second locking member 32 to form free end portions, thereby facilitating the separation of the shoe covers 90 from the second end portions 102 of the installation assembly 10.
In the preferred embodiment of the present invention, the installation assembly 10 comprises two elongated installation arms 11 and 12, so as to connect a plurality of shoe covers 90 in series, and the distance between the two installation arms 11 and 12 is greater than the width of the shoe. In this way, the opened opening of each of the shoe covers 90 can facilitate the user's shoes to wear the shoe covers 90.
The first locking member 31 comprises a holding base 311 mounted to the frame 20, and a movable frame 316, wherein the holding base 311 has two grooves 310, wherein the positions of the two grooves 310 are corresponding to the positions of the first end portions 101 of the two installation arms 11 and 12 of the installation assembly 10, and the first end portions 101 of the two installation arms 11 and 12 can be respectively clamped into the two grooves 310. The first locking member 31 further comprises at least one positioning member 312 connected to the movable frame 316, the positioning member 312 can be rotated and bias against to one side of the two installation arms 11 and 12 of the installation assembly 10, so that the two installation arms 11 and 12 are respectively fixed in the two grooves 310 of the first locking member 31, thereby completing the fixing of the first end portions 101 of the two installation arms 11 and 12 of the installation assembly 10, as shown in
As shown in
As shown in
As shown in
Further, the rack 3122 comprises a first stop arm 3123 and a second stop arm 3124, and the first end portions 101 of the two installation arms 11 and 12 of the installation assembly 10 can be retained in the first stop arm 3123 and the second stop arm 3124, so as to realize the fixing of the two installation arms 11 and 12 of the installation assembly 10 in the two grooves 310 on the holding base 311, so as to realize fixation of the first end portions 101 of the two installation arms 11 and 12 of the installation assembly 10.
As shown in
In addition, one skilled in the art can adjust the structure of the positioning member 312 in the first locking member 31 of the shoe cover dispenser device 100 according to the actual situation, such as adjusting the positioning members 312 in the first locking member 31. For example, the positioning member 312 can be a shifter lever and so on.
The second locking member 32 which is mounted to the frame 20 is configured to comprise a first holding member 321 and a second holding member 322, wherein the first holding member 321 has a first slot 3211 and comprises at least one first locking ball 3212. The first locking ball 3212 holding member 321 is movable holding member 321 can allow the second end portion 102 of the installation assembly 10 to be locked in the first slot 331.
The second holding member 322 has a second locking slot 3221 and comprises at least one second locking ball 3222, wherein the second locking ball 3222 is movable to allow the second end portion 102 of the installation assembly 10 to be locked in the second slot 332.
In other words, when the second end portions 102 of the two installation arms 11 and 12 of the installation assembly 10 are respectively placed in the first slot 3211 of the first holding member 321 and the second slot 3221 of second holding member 322, the second end portions 102 of the two installation arms 11, 12 of the installation assembly 10 can be locked by locking the first locking ball 3212 and the second locking ball 3222, thereby locking the installation assembly 10 fixedly connected to the frame 20. So that when the first end portions 101 of the two installation arms 11, 12 of the installation assembly 10 are released from the first locking member 31, a plurality of the shoe covers 90 is mounted to the shoe cover dispenser device 100 through the first end portion 101 of the two installation arms 11, 12 of the installation assembly 10.
Further, the first holding member 321 and the second holding member 322 are configured to be able to move laterally and longitudinally with respect to the frame 20, so as to increase fitness between the two end portions of the second installation arms 11 and 12 of the two installation arms 11 and 12 of the installation assembly 10 and the first slot 331 and the second slot 332.
Furthermore, the first holding member 321 and the second holding member 322 can be movably connected to the frame 20, so that the position of the first slot 3211 of the first holding member 321 and the second slot 3221 of the second holding member 322 can be adjusted relative to the positions of the second end portions 102 of the two installation arms 11 and 12 of the installation assembly 10, so that when the positions of the two installation arms 11 and 12 of the installation assembly 10 and the first holding portion and the second holding member 322 are not aligned with each other, and the relative positions of the first holding member 321 and the second holding member 322 can also be adjusted to make the second end portions 102 of the two installation arms 11 and 12 of the installation assembly 10 are respectively engaged with the first holding member 321 and the second holding member 322 to complete the fixing of the second end portions 102 of the two installation arms 11 and 12 of the installation assembly 10.
As shown in
The transmission mechanism 329 is implemented as a transmission mechanism 329 which comprises a crank 3291 and an actuating mechanism 3292, wherein the crank 3291 works as an active driving member, so that the rotation of the crank 3291 is converted by the transmission mechanism 329 to actuate the displacement of the actuating mechanism 3292.
The guiding mechanism 327 comprises a displacement mechanism 3271, a control mechanism 3272 and a sliding member 3273. The sliding member 3273 is arranged on the displacement mechanism 3271 and is fixedly connected to the control mechanism 3272 so that the control mechanism 3272 can be used to be driven by the sliding member 3273 to move along with the movement of the displacement mechanism 3271, wherein the displacement mechanism 3271 is fixed to an end of the transmission mechanism 329. The control mechanism 3272 comprises a guide rod 32721, a pusher member 32722, and a pivot shaft 32723 mounted to the frame 20, wherein the guide rod 32721 pivotally connected to the pivot shaft 32723 and is arranged to be extended outward from the end of the actuating mechanism 3292 and can move along with the actuating mechanism 3292, so that a displacement of the guide rod 32721 with respect to the frame 20 is performed, the pusher member 32722 is extended downwardly from the guide rod 32721, and the first end portions 101 of the two installation arms 11 and 12 of the installation assembly 10 are arranged between the pusher member 32722 and the guide rod 32721, so that the second end portions 102 of the two installation arms 11 and 12 of the installation assembly 10 can be biased against by the pusher member 32722 to move to a state in which the second end portions 102 of the two installation arms 11 and 12 are retained and fixed by the two second locking units 328. And when the control mechanism 3272 is moved away from the two installation arms 11 and 12, the second end portions 102 of the two installation arms 11 and 12 are not retained by the two locking units 328, so that the second end portions 102 of the two installation arms 11 and 12 can be free end portions for dispensing the shoe covers 90.
In the fourth alternative mode of the preferred embodiment of the shoe cover dispenser device 100 of the present invention, a cross rod 200 is provided on the frame 20, and the cross rod 200 is configured to be fixed to the bottom of the frame 20. The actuating mechanism 3292 comprises a first connecting rod 32921, a second connecting rod 32922, a third connecting rod 32923, and a fourth connecting rod 32924, wherein the first connecting rod 32921 is hingedly connected with the crank 3291, so that the first connecting rod 32921 realizes up and down movement under the rotation of the crank 3291. At the same time, the first connecting rod 32921 is able to drive the second connecting rod 32922 to rotate, the second connecting rod 32922 and the third connecting rod 32923 are movably connected to the cross rod 200, and the second connecting rod 32922 and the third connecting rod 32923 are rotatable with the cross rod 200. The fourth connecting rod 32924 is movably connected to the third connecting rod 32923 and can be driven to move by the third connecting rod 32923, and the displacement mechanism 3271 is fixedly connected to the fourth connecting rod 32924 so that the displacement mechanism 3271 can perform forward and backward reciprocating displacement movement relative to the cross rod 200 under the driving of the fourth connecting rod 32924.
Therefore, when the crank 3291 rotates, the first connecting rod 32921 is driven to move up and down, and the up and down movement of the first connecting rod 32921 simultaneously drives the second connecting rod 32922 to rotate with respect to the cross rod 200, and the rotational movement of the second connecting rod 32922 will correspondingly drive the third connecting rod 32923 to rotate with respect to the cross bar 200, so that the fourth connecting rod 32924 is driven by the third connecting rod 32924 to move, thereby driving the displacement mechanism 3271 to perform corresponding forward and backward displacement movements.
The displacement mechanism 3271 comprises a retaining surface 32710 defining a displacement groove 32711. The retaining surface 32710 is an inner side surface which comprises a retention surface 327101 which can be an inclined surface or a curved surface, and a straight surface 327102, the retention surface 327101 and the straight surface 327102 are smoothly transitioned, and the sliding member 3273 is arranged in the displacement groove 32711, and the sliding member 3273 can slide along the retaining surface 32710.
The sliding member 3273 is fixedly connected to the guide rod 32721 in the control mechanism 3272, so when the displacement mechanism 3271 moves forward and backward, the sliding member 3273 is driven by the retaining surface 3271 to slide along the retaining surface 32710 of the displacement groove 32711, so as to drive the guide rod 32721 in the control mechanism 3272 to pivotally rotate.
Since the pusher member 32722 is fixedly connected to the guide rod 32721, the pusher member 32722 will be driven by the guide rod 32721 to rotate to push against the second end portion 102 of the installation arms 11 and 12 of the installation assembly 10 pusher member 32722, so that the two second end portions 102 of the installation arms 11 and 12 of the installation assembly 10 will be driven to move along with the displacement of the guide rod 32721, and thus the two second end portions 102 of the installation arms 11 and 12 can be moved to positions that are locked by the second locking unit 328.
In other words, the locking unit 328 of the second locking member 32 may comprises the first holding member 321 and the second holding member 322 the two second end portions 102 of the two installation arms 11 and 12 of the installation assembly 10 can be respectively engaged in the first slot 3211 and the second slot 3221 under the operation of the transmission mechanism 329 and the pusher member 32722 of the control mechanism 3272, so as to realize the locking of the two installation arms 11 and 12 of the installation assembly 10.
Preferably, in the fourth alternative mode of the present invention, each crank 3291 is implemented as a component of a cover frame 3293, and the cover frame 3293 is movably connected to the frame 20s. Therefore, as described above, when the cover frame 3293 is rotated, the guiding mechanism 327 can be driven to move and finally the two installation arms 11 and 12 of the installation assembly 10 are driven to be locked or released.
However, the specific implementation of the present invention is not limited to this. Those skilled in the art can determine the specific structure in the displacement mechanism 3271 according to the actual situation, as long as the sliding member can be realized under the driving of the displacement mechanism 3271 left and right. In other words, as long as the same or similar technical solutions as the present invention are adopted on the basis of the above disclosure of the present invention, the same or similar technical problems as the present invention are solved, within the protection scope of the present invention and the same or similar technical solutions as the present invention are achieved.
As shown in
As shown in
The operation of the second locking member 32 for locking the two second end portions 102 of the installation arms 11 and 12 will automatically drive the first locking member 31 to release the two first end portions 101 of the installation arms 11 and 12. The operation of the first locking member 31 for locking the two first end portions 101 of the installation arms 11 and 12 will automatically drive the second locking member 32 to release the two second end portions 102 of the installation arms 11 and 12.
According to this fourth alternative mode of the preferred embodiment of the present invention, the first locking member 31 comprises the positioning member 312, the first positioning block 313 and the second positioning block 314. The first positioning block 313 and the second positioning block 314 are substantially W-shaped members, wherein the two first end portions 101 of the two installation arms 11 and 12 of the installation assembly 10 can be respectively stored in the grooves 310 of the first positioning block 313 and the second positioning block 314. Each of the first positioning block 313 and the second positioning block 314 has a clamping groove 315 for retaining the positioning member 312.
The second locking member 32 comprises two locking system 320 each comprises the guiding mechanism 327, the locking unit 328, and the transmission mechanism 329. The first locking member 31 is integrated with the two cranks 3291 of the transmission mechanism 329 to form the cover frame 3293, so that when the cover frame 3293 is rotated upward, the positioning member 312 is rotated to release the two first end portions 101 of the installation arms 11 and 12, while simultaneously the two second end portions 102 of the installation arms 11 and 12 are driven to be pushed by the pusher members 32722 because of linkage of the second locking member 31 with the first locking member 31, so as to be locked by the locking unit 328, as shown in
When the two first end portions 101 of the installation arms 11 and 12 are free end portions and finished the replacement of new cover covers 90 which are installed on the installation arms 11 and 12, the cover frame 3293 can be rotated downward, so that the two first end portions 101 of the installation arms 11 and 12 are pushed by the positioning member 312, so as to be locked at the grooves 310. Simultaneously, the cover frame 3293 drive the transmission mechanism 329 to move, so as to drive the guide mechanism 327 to drive the two pusher members 32722 to rotate away from the two second end portions 102 of the installation arms 11 and 12, so as to release the two second end portions 102 of the installation arms 11 and 12 to allow the two second end portions 102 of the installation arms 11 and 12 to function as free end portions for dispensing the shoe covers 90. As shown in
Referring to
When the installation arms 11 and 12 need to be released from the receiving grooves 3250 of the self-locking assembly 30, it is only necessary to push the reset member 3253 away from the self-locking member 3252, so that the self-locking member 3252 can realize reverse rotation, so that the installation arms 11 and 12 can push the self-locking members 3252 to rotate in a reverse direction to escape from the receiving grooves 3250.
As shown in
The size of the engaging groove 3261 is set to enable each of the second end portions 102 of the installation arms 11 and 12 to be received in the engaging grooves 3261, and when the second end portions 102 of the installation arms 11 and 12 are respectively received in the engaging grooves 3261. The installer may press the elastic lock 3263 to penetrate the mounting hole 3262 to allow the elastic lock 3263 to be extended into the engaging groove 3261, thereby blocking the second end portions 102 of the installation arms 11 and 12 from moving out of the engaging grooves 326, so as to lock the second end portions 102 of the installation arms 11 and 12.
In addition, those skilled in the art can determine or change the specific structure of the second locking member 32 according to the actual situation, as shown in
As shown in
Since the front and rear shoe covers 90 are interlocked with each other, when a standby shoe cover 90 is worn by a user, the subsequent shoe cover 90 will move forward. After the standby shoe cover 90 is separated from the subsequent shoe cover 90, the subsequent shoe cover 90 shrinks backward under the action of its elastic opening edge 901. When encountering the stoppers 13 and 14, a front end portion of the subsequent shoe cover 90 is blocked by the stoppers 13 and 14 to avoid further retract movement. At the same time, since a rear end portion of the subsequent shoe cover 90 is pulled by a rear shoe cover 90, under the action of the stoppers 13 and 14, the subsequent shoe cover 90 is in an open state and function as a subsequent standby shoe cover 90 for the user to wear on.
As shown in
As shown in
In other words, the length of the first stopper end portion 15 of each of the stoppers 13 and 14 is longer than the length of the second stopper end portion 16, and the first stopper end portion 15 is located on the front side of the second stopper end portion 16, so that when the rear shoe cover 90 detached from the front shoe cover, under the action of retracting elastic tension of the elastic opening edge 901 of the rear shoe cover 90, the retraction of the front end portion of the rear shoe cover 90 is first blocked by the first stopper end portion 15. If the first stopper end portion 15 does not block the backward movement of the shoe cover 90, the shoe cover 90 will encounter the second stopper end portion 16 for blocking the further retraction.
As shown in
As shown in
As shown in
The difference from the above-mentioned preferred embodiment is that in the ninth alternative mode, since the frame 20 is horizontally arranged, it has a regular structure as a whole and saves a certain amount of space in height. Therefore, the use of the frame 20 in the ninth alternative mode can facilitate the packaging and transportation of the shoe cover dispenser device 100, and can also save the space for using the shoe cover dispenser device 100.
The present invention further provides a shoe cover assembly 800. The shoe cover assembly 800 comprises a plurality of shoe covers 90. The plurality of shoe covers 90 are connected in series and the adjacent shoe covers 90 are removable connected to each other.
As shown in
Each of the shoe covers 90 comprises a shoe cover main body 91 having a receiving cavity 92 and an elastic opening edge 901 defining the opening 93, the opening 93 is arranged on the upper part of the shoe cover main body 91 so that the user's shoe can extend into the receiving cavity 92 of the shoe cover main body 91 through the opening 93.
As shown in
As shown in
In the preferred embodiment of the shoe cover assembly 800 of the present invention, the two connecting rods 200 are respectively flexible hollow tubular rods. When the shoe cover assembly 800 is installed on the shoe cover dispenser device 100, the two connecting rods 200 are inserted with the two installation arms 11 and 12 of the installation assembly 10 of the shoe cover dispenser device 100, and then the two connecting rods 200 are pulled out to leave the plurality of shoe covers 90 on the installation arms 11 and 12 of the shoe cover dispenser device 100.
Since the two connecting rods 200 are respectively flexible hollow tubes, it is convenient to match the shape and structure of the two installation arms 11, 12 of the shoe cover device during the installation of the shoe cover assembly 800. In addition, since the two connecting rods 200 respectively penetrate through the rear joint perforations 942 in the plurality of shoe covers 90 in sequence, when the plurality of shoe covers 90 are installed on the installation arms 11, 12, the two connecting rods 200 are easy to be removed from the installation arms 11, 12.
In detail, as a modification of the preferred embodiment of the shoe cover assembly 800 of the present invention, in the shoe cover assembly 800, the connection mode of the two front and rear shoe covers 90 is changed to the following manner that the rear perforation portions 944 of a front shoe cover 90 pass through the front joint perforations 941 of a rear shoe cover 90 and the two connecting rods 200 pass through the rear joint perforations 942 to allow the plurality of shoe covers be slidable along the two connecting rods 200.
Next, the installation process and working principle of the shoe cover assembly 800 and shoe cover dispenser device 100 of the present invention will be further briefly described referring to
As shown in
Then connect the two connecting rods 200 of the shoe cover assembly 800 with the two installation arms 11 and 12 of the shoe cover dispenser device 100, and install the shoe covers 90 to the installation arms 11 and 12, and then remove the two connecting rods 20 to leave the plurality of shoe covers 90 on the two installation arms.
Afterwards, as shown in
As shown in
Specifically, the retention member 42 is implemented as an elastic material sheet with an arc-shaped structure, and the retention member 42 provide a one-way damping function, so as to prevent the retention member 42 from being affected by the inertial force of the shoe covers 90. As the shoe covers 90 are driven to move, and the retention member 42 can realize the effect of enlarge the openings 93 of the shoe covers 90 through the deformation and rebound of the elastic material sheet.
As a modification of this alternative mode of the present invention, the retention member 42 may also be a metal sheet with other structural shapes, and a torsion spring or tension spring may be provided to generate damping functions, so as to facilitate to keep the standby shoe cover 90 having the enlarged opening 93.
One skilled in the art will understand that the embodiment of the present invention as shown in the drawings and described above is exemplary only and not intended to be limiting.
It will thus be seen that the objects of the present invention have been fully and effectively accomplished. The embodiments have been shown and described for the purposes of illustrating the functional and structural principles of the present invention and is subject to change without departure from such principles. Therefore, this invention comprises all modifications encompassed within the spirit and scope of the following claims.
This application is a Divisional application that claims the benefit of priority under 35 U.S.C. § 120 to a non-provisional application, application Ser. No. 17/489,784, filed Sep. 30, 2021, which is a non-provisional application that claims the benefit of priority under 35 U.S.C. § 119 to a Chinese application, application number CN202110003068.5, filed Jan. 20, 2021, which are incorporated herewith by reference in their entirety.
Number | Name | Date | Kind |
---|---|---|---|
3775793 | Casavant | Dec 1973 | A |
6219938 | Anderson | Apr 2001 | B1 |
6339888 | Brunson | Jan 2002 | B1 |
6666479 | Maddaleni | Dec 2003 | B1 |
7108154 | Thompson | Sep 2006 | B1 |
7440816 | He | Oct 2008 | B1 |
7634862 | Cockman | Dec 2009 | B2 |
7669351 | Ghotbi | Mar 2010 | B1 |
20020020031 | Gultekin | Feb 2002 | A1 |
20060144879 | Hu | Jul 2006 | A1 |
20070163912 | Chen | Jul 2007 | A1 |
20070204568 | Chen | Sep 2007 | A1 |
20080000035 | Levine | Jan 2008 | A1 |
20080237277 | Xu | Oct 2008 | A1 |
20090071989 | He | Mar 2009 | A1 |
20090152312 | Li | Jun 2009 | A1 |
20100288800 | Xu | Nov 2010 | A1 |
20110272440 | Heller | Nov 2011 | A1 |
20120286471 | Grauzer | Nov 2012 | A1 |
20170088339 | Xu | Mar 2017 | A1 |
20180317686 | Howard | Nov 2018 | A1 |
20230123125 | Xu | Apr 2023 | A1 |
Number | Date | Country | |
---|---|---|---|
20230123125 A1 | Apr 2023 | US |
Number | Date | Country | |
---|---|---|---|
Parent | 17489784 | Sep 2021 | US |
Child | 17844678 | US |