The field of the present invention relates to tray tables, such as tray tables which may extend out over a bed for use as an in-bed table and may retract when not being used.
Tray tables for use in the bed are common, and for people who choose Or need to eat, read, or work in bed, having a bedside tray table that extends out over the bed when needed and stows out of the way is an indispensable convenience. Such stowable tray tables are known in the art, however they often are attached to limitations that turn their use into a frustrating convenience. For example, some stowable tray tables have too many degrees of freedom, such as is seen in the tray table disclosed in U.S. Pat. No. 1,220,578, as all the degrees of freedom make the tray table too easily bumped out of the position in which it is set. Others have more limited degrees of freedom, but some of those degrees of freedom are nut easy to use for a person who is lying in the bed and needs to adjust the position of the bed tray, such as the tray table disclosed in U.S. Pat. No. 3,054,122.
For a person who is lying in bed, having a tray table with limited degrees of freedom is acceptable when the degrees of freedom provided make the tray table easy to use for a person lying, in the bed and at the same time provide a sufficiently stable platform which may be used and not too easily bumped out of position. It is therefore desirable that a stowable tray table for use in the bed meet a balance between usability and stability. At the same time, another desirable feature for some stowable tray tables is that they can be stowed entirely out of sight when not in use.
The present invention is directed toward a tray table apparatus which includes a tray table which is movable between a stowed position to a deployed position. When not in use, the tray table may be stowed out of the way in the stowed position. The stowable tray table is made to be particularly easy to use by a person lying in a bed. When in use, the tray table provides adjustment mechanisms by which a person may easily adjust at least two degrees of freedom: the height of the tray table above another surface, such as a bed, and the lateral position of the tray table between, such as between the head and foot of a bed.
In a first separate aspect of the present invention, a tray table apparatus includes: a tray table; and a tray table support assembly coupled to the tray table, the tray table and the tray table support assembly configured to transition between a stowed position and a deployed position. The tray table support assembly includes: a support shelf; a support arm having a first end pivotably coupled to the support shelf so as to be pivotable about a first pivot axis and a second end, the tray table pivotably coupled to the second end of the support arm so as to be pivotable about a tray table pivot axis; and an adjustable pivot stop positioned to limit pivot movement of the support arm about the first pivot axis in the deployed position, such that a selected adjustment position of the adjustable pivot stop determines an angle of inclination formed between the support arm and the support shelf.
In a second separate aspect of the present invention, a tray table apparatus includes: a tray table; and a tray table support assembly coupled to the tray table, the tray table and the tray table support assembly configured to transition between a stowed position and a deployed position. The tray table support assembly includes: a support shelf; and a support arm, the support arm having a first end pivotably coupled to the support shelf so as to be pivotable about a first pivot axis and a second end, the tray table pivotably coupled to the second end of the support arm so as to be pivotable about a tray table pivot axis and translatable, relative to the support arm, in a direction parallel to the tray table pivot axis.
In a third separate aspect of the present invention, a tray table apparatus includes: a tray table having a first end and a second end; and a tray table support assembly coupled to the tray table, the tray table and the tray table support assembly being configured to transition between a stowed position and a deployed position. The tray table support assembly includes: a support shelf:, a support arm having a first end pivotably coupled to the support shelf so as to be pivotable about a first pivot axis and a second end, the first end of the tray table pivotably coupled to the second end of the support arm so as to be pivotable about a tray table pivot axis; and a support leg pivotably coupled to the tray table adjacent the second end of the tray table, the support leg configured to be adjustable in length.
In a fourth separate aspect of the present invention, a tray table apparatus includes: a support structure; a tray table; and a tray table support assembly coupled to the tray table and mounted to the support structure, the tray table and the tray table support assembly configured to transition between a stowed position and a deployed position. The tray table support assembly includes: a support shelf having a first end and a second end opposite the first end; and a support arm having a first end and a second end, the tray table pivotably coupled to the second end of the support arm so as to be pivotable about a tray table pivot axis. The support arm is alterable between: (1) a first state in, which the first end of the support arm is pivotably coupled to the support shelf so as to be pivotable about a first pivot axis between a first folded position in which the support arm lies atop the support shelf and a first unfolded position in which the support arm extends in a first inclined orientation such that the second end of the support arm is located laterally beyond the first edge of the support shelf; and (2) a second state in which the first end of the support arm is pivotably coupled to the support shelf so as to be pivotable about a second pivot axis between a second folded position in which the support arm lies atop the support shelf and a second unfolded position in which the support arm extends in a second inclined orientation such that the second end of the support arm is located laterally beyond the second edge of the support shelf.
In a fifth separate aspect of the present invention, a tray table apparatus includes: a tray table having a first end and a second end; a telescoping leg pivotably affixed adjacent the second end of the tray table; a handle affixed to the second end of the tray table; and a tray table support assembly coupled to the tray table, the tray table and the tray table support assembly configured to transition between a stowed position and a deployed position. The tray table support assembly includes: a support shelf having a lateral centerline, a first pivot axis, and a second pivot axis, with the first pivot axis and the second pivot axis being symmetrical to each other with respect to the lateral centerline; a support arm including at least one first pivot member pivotably coupled to the support shelf along one of the first pivot axis and the second pivot axis, and a second pivot member pivotably coupled adjacent to the first end of the tray table; an adjustable pivot stop positioned to limit pivot movement of the support arm with respect to the support shelf in the deployed position, such that an adjustment position of the adjustable pivot stop determines a height of the tray table in the deployed position; a pivot block pivotably coupling the second pivot member of the support arm to the tray table, wherein the pivot block is configured to be slidable along a longitudinal axis of the second pivot member; and a support leg pivotably coupled to the tray table adjacent the second end, the support leg being configured to be adjustable in length.
In a sixth separate aspect of the present invention, a tray table apparatus includes: a furniture support structure having a storage compartment; and a tray table support assembly coupled to a tray table and to the furniture support structure, the tray table and the tray table support assembly alterable between: (1) a first configuration in which the tray table and the tray table support assembly can be transitioned between: (a) a first stowed position in which the tray table and the tray table support assembly are at least partially disposed within the storage compartment, and (b) a first deployed state in which the tray table is outside of the storage compartment and extends from a first side of the furniture support structure so that one or more articles can be supported by the tray table; and (2) a second configuration in which the tray table and the tray table support assembly can be transitioned between: (a) a second stowed position in which the tray table and the tray table support assembly are at least partially disposed within the storage compartment, and (b) a second deployed state in which the tray table is outside of the storage compartment and extends from a second side of the furniture support structure so that one or more articles can be supported by the tray table, the second side being opposite the first side.
In a seventh separate aspect of the present invention, a tray table apparatus includes: a furniture support structure having a storage compartment; and a tray table support assembly coupled to a tray table and to the furniture support structure, the tray table and the tray table support assembly alterable between: (1) a stowed position in which the tray table and the tray table support assembly are at least partially disposed within the storage compartment; (2) a first deployed state in which the tray table is outside of the storage compartment and extends from a first side of the furniture support structure so that one or more articles can be supported by the tray table; and (3) a second deployed state in which the tray table is outside of the storage compartment and extends from a second side of the furniture support structure so that one or more articles can be supported by the tray table, the second side being opposite the first side.
Accordingly, an improved tray table apparatus having a stowable tray table is disclosed. Advantages of the improvements will be apparent from the drawings and the description of the preferred embodiment.
The foregoing summary, as well as the following detailed description of the exemplary embodiments, will be better understood when read in conjunction with the appended drawings. It should be understood, however, that the invention is not limited to the precise arrangements and instrumentalities shown in the following figures:
The description of illustrative embodiments according to principles of the present invention is intended to be read in connection with the accompanying drawings, which are to be considered part of the entire written description. In the description of embodiments of the invention disclosed herein, any reference to direction or orientation is merely intended for convenience of description and is not intended in any way to limit the scope of the present invention. Relative terms such as “lower,” “upper,” “horizontal,” “vertical,” “above,” “below,” “up,” “down,” “left,” “right,” “top” and “bottom” as well as derivatives thereof (e.g., “horizontally,” “downwardly,” “upwardly,” etc.) should be construed to refer to the orientation as then described or as shown in the drawing under discussion. These relative terms are for convenience of description only and do not require that the apparatus be constructed or operated in a particular orientation unless explicitly indicated as such. Terms such as “attached,” “affixed,” “connected,” “coupled,” “interconnected,” and similar refer to a relationship wherein structures are secured or attached to one another either directly or indirectly through intervening structures, as well as both movable or rigid, attachments or relationships, unless expressly described otherwise. Moreover, the features and benefits of the invention are illustrated by reference to the preferred embodiments. Accordingly, the invention expressly should not be limited to such preferred embodiments illustrating some possible non-limiting combinations of features that may exist alone or in other combinations of features; the scope of the invention being defined by the claims appended hereto.
As used herein, the term “night table” refers to any furniture that may be placed and/or used next to a bed. By way of example, a night table may be a free-standing piece of furniture having one or more storage compartments, such as a chest of drawers, or it may be a piece of furniture that is built-in to a wall or another piece of furniture, such as a bed or headboard. In addition, Those of skill in the art will recognize that the terms “night table,” “nightstand,” and “bedside table” are all used within the industry as standard descriptive names for the same type of furniture.
Turning in detail to the drawings,
The tray table apparatus 10 includes a tray table support assembly 21 which is coupled to and provides support for the tray table 13. The tray table apparatus 10 transitions between the first deployed position and a first stowed position as illustrated in
The lower storage compartment 19 of the night stand 11 is shown as two drawers in
As shown in
The tray table support assembly 21 includes a support shelf 29 which is coupled to the internal frame 31 of the night table 11 by drawer slides 33. The drawer slides 33 enable the stowed tray table apparatus 10 to slide out of the upper storage compartment 17 in the direction shown by arrows 35. In certain embodiments, the drawer slides 33 may be any appropriate type of mechanism which enables the tray table apparatus 10 to slide out from the upper storage compartment 17. The tray table apparatus 10 is shown in
More particularly, on the drawer slides 33, the support shelf 29 translates, relative to the night stand 11, between a retracted position, in which the tray table support assembly 21 is in the first stowed position within the upper storage compartment 17, and an extended position, in which the tray table support assembly 21 is in an intermediate position, before transitioning to the first deployed position. During translation of the support shelf 29 from the extended position to the retracted position, and vice versa, the support shelf 29 travels in a plane of motion which is parallel to the pivot axes PA1, PA2, shown in
The tray table apparatus 10 is shown in the first deployed position in
Thus,
In the embodiment shown, the pivot members 41 form sides of the support arm 39, and each pivot member 41 is positioned orthogonal to the pivot axis PA2. In certain embodiments, the support arm 39 may include at least one pivot member, and the at least one pivot member may be positioned at any angle to the pivot axis PA2 so as to allow the pivot motion when the tray table apparatus 10 transitions from the first stowed position to the first deployed position and vice versa.
With the pivot members 41 pivotably affixed to the pivot blocks 37, the support arm 39 is able to pivot with respect to the support shelf 29 for transitioning the tray table apparatus 10 between the intermediate position and the first deployed position. As is discussed in greater detail below, the support arm 39 is also pivotably coupled to the tray table 13, so that when the support arm 39 moves during the transition between the intermediate position and the first deployed position (as shown by arrow 45), the tray table 13 simultaneously can be pivoted with respect to the support arm 39. The tray table support assembly 21 also includes support blocks 47 secured into threaded receptacles (shown as threaded receptacles 44 in
The threaded receptacles used to secure the base plate 36 to the support shelf 29 and the threaded receptacles used to secure the support blocks 47 to the support shelf 29 are symmetrically located about a lateral centerline CL1 and a longitudinal centerline CL2 of the support shelf 29. Symmetric placement of the respective threaded receptacles, along with the threaded knobs 38 used to secure the base plate 36 to the support shelf 29 allows the base plate 36 to be secured to either side of the support shelf 29. This configuration also permits the user to easily and quickly reconfigure the tray table apparatus 10 from the first configuration to the second configuration. The tray table apparatus 10 can be used in the first deployed position or in a second deployed position, with the tray table 13 extended out on either side of the tray table support assembly 21 (as is shown in
With the support blocks 47 in place, when the tray table apparatus 10 is in the first stowed position or in the intermediate position, the tray table 13 and the support shelf 29, and the support arm 39 are positioned in a plurality of parallel planes, with a first plane defined by the tray table 13, a second plane defined by the support shelf 29, and a third plane defined by the support arm 39. In certain embodiments, the support blocks 47 may include resilient caps 4S to aid in reducing wear and tear on the underside of the tray table 13 when the tray table apparatus 10 is in the first stowed position or in the intermediate position.
The tray table support assembly 21 also includes a pivot stop 49, as is shown in
The bottom surface 61 of the tray table 13 is shown in
A support leg 85 is mounted adjacent and pivotably coupled to the bottom surface 61 adjacent the second end 87 of the tray table 13. A leg clip 89 is also mounted to the bottom surface 61 of the tray table 13. The support leg 85 is pivotable from a position parallel with the bottom surface 61 of the tray table 13 to a position that is orthogonal to the bottom surface 61. In the parallel position, the leg clip 89 engages the support leg 85 and secures support leg 85 to the bottom surface 61 of the tray table 13. In order to transition the tray table apparatus 10 into the first or second stowed position from the first or second deployed position respectively, the support leg 85 is engaged with the leg clip 89 in the parallel position. When the tray table apparatus 10 is in the first or second deployed position, the support leg 85 may be pivoted to the orthogonal position so that the support leg 85 can rest on the bed to provide additional stability and support to the tray table 13.
As shown in
A handle 101 is affixed to the second end 87 of the tray table 13, as is shown in
It will be appreciated that the tray table apparatus 10 may be coupled to any support structure other than a night stand or furniture. For example, in certain embodiments, the tray table apparatus 10 may be coupled to a cart with wheels to provide a deployable tray table that may be used in any convenient circumstances. It will also be appreciated that the tray table apparatus 10 may be used in other circumstances which are not adjacent a bed. In addition, in certain embodiments the tray table apparatus 10 may be coupled to a support structure which may or may not include a storage compartment for stowing the tray table apparatus 10. In such embodiments without a storage, compartment, the stowed position and the intermediate position of the tray table apparatus 10 may be one and the same position. In certain embodiments, such as one in which a storage compartment which opens from above the tray table apparatus 10, instead of opening from on the side, is used for the stowing the tray table apparatus 10, the tray table apparatus 10 may have no intermediate position, instead transitioning directly from the stowed position to the deployed position. In most embodiments, the ability to quickly and easily symmetrically reconfigure the deployed position of the tray table support assembly is anticipated to provide a versatility that is heretofore not seen in the prior art.
Described another way, as part of the reconfiguration, the support arm 39 is alterable between a first state and a second state. In the first state, the first end 40 of the support arm 39 is pivotably coupled to the support shelf 21 so as to be pivotable about a the pivot axis PA2 between a first folded position and a first unfolded position in which the support arm 39 extends in a first inclined orientation such that the second end 66 of the support arm 39 is located laterally beyond the first edge 96 of the support shelf 29. The tray table 13 extends from a first side of the night table 11. In the second state, the first end 40 of the support arm 39 is pivotably coupled to the support shelf 21 so as to be pivotable about a the pivot axis PA1 between a second folded position and a second unfolded position in which the support arm 39 extends in a second inclined orientation such that the second end 65 of the support arm 39 is located laterally beyond the second edge 98 of the support shelf 29. The, tray table 13 extends from a second side of the night table 11. Comparing the first state and the second state of the support arm 39, the first folded state of the support arm 39 is symmetrical about the lateral centerline CL1 of the support shelf 29 with the second folded state of the support arm 39. Similarly, the first extended position of the support arm 39 is symmetrical about the lateral centerline CL1 of the support shelf 29 with the second extended position of the support arm 39.
A second embodiment of a tray table apparatus 110, again shown in context coupled to a night table 111, is illustrated in
The tray table support assembly 119 also includes a pivot stop 133 which is affixed to the pivot member 131 of the support arm 127, as is shown in
A third embodiment of the tray table apparatus is shown in
The base plate 236 comprises a pair of pivot blocks 237 which are joined to individual pivot members 241 of the support arm 239. The pivot members 241 extend from a first end 240 of the support arm 239 to the nay table 213. A pivot stop 249 on the base plate 236 engages a cross member 259 on the support arm 239 to enable the user to set the angle of the support arm 239 with respect to the support shelf 229. The cross member 259 extends between the two pivot members 241, and may be welded, or welded to the pivot members. In alternate embodiments, the cross member 259 may be attached by any known means.
Turning to
The screw element 251 engages a threaded receptacle 255 in an adjustment well 252. In some embodiments, the threaded receptacle 255 is formed as threads in the adjustment well 252. In other embodiments, a separate component containing threads is mounted to the adjustment well 252, such as by pressing, gluing, or other known techniques. In yet further embodiments, the threaded receptacle 255 may be formed in the base plate 236 or the support shelf 229. The adjustment well 252 is formed as a tray having one open side to allow the user to easily reach the knob 253 for adjustment. The other three sides of the adjustment well 252 may be formed with walls having stepped and radiused corners, a taper, or other features to guide the user's hand to the adjustment knob 253 without the need to visually locate the adjustment knob 253.
As with the embodiment of
Turning to
Proximate the first end 265, the tray table 213 also <has a tray pivot block 263 which engages a pivot member 267 located at a second end 266 of the support arm 239, the second end 266 being opposite the first end 240. This allows the tray table 213 to rotate about a longitudinal axis LA, permitting the deployment and stowage of the tray table 213. The pivot member 267 and the tray pivot block 263 also form a sliding joint. This permits the tray table 213 to be translated along the longitudinal) axis LA so that the tray table 213 may be moved toward or away from the user with respect to the support arm 239. The pivot member 267 further comprises an indent 269 which provides tactile feedback to the user when the user has moved the tray table 213 to the correct position for stowage of the tray table 213 The indent 269 and the tray pivot block 263 are illustrated as being in the middle of the support arm 239 and the tray table 213 respectively. However, in alternate embodiments one or both of the indent 269 and the tray pivot block 263 may be moved. This may provide a more desirable range of motion of the tray table 213 when in the deployed position. In yet other embodiments, the indent 269 may be eliminated.
As best shown in
In other embodiments, the support legs 285 may be formed as a single member having a single length adjustment for two or more separate contact points, a single member having individual length adjustments for two or more separate contact points, or a single member that is non-adjustable. Most preferably, where two support legs 285 are utilized, they are arranged at the corners of the tray table 213 rather than along a longitudinal centerline of the tray table 213. In yet other embodiments, it is conceived that the support legs 285 are positioned non-symmetrically about a longitudinal centerline of the tray table 213.
Turning to
In some embodiments, there is only one engagement pin 324 and engagement hole 326 per slide bracket 322. In yet other embodiments, there are more than two engagement pins 324 and engagement holes 326 per slide bracket 322. In further embodiments, the engagement pins 324 and engagement holes 326 may not be circular, but instead may take the shape of a square, a slot with radiused ends, or another shape that permits engagement of the support shelf 329 with the slide brackets 322. The engagement holes 326 need not extend all the way through the support shelf 329. In alternate embodiments, the engagement pins 324 and the engagement holes 326 may be reversed such that the engagement pins 324 are arranged on the support shelf 329. In yet further variations, the engagement pins 324 and engagement holes 326 may be features arranged into the insides of the slide brackets 322 which permit the support shelf 329 to engage the slide brackets 322. Yet other embodiments may have a plurality of engagement features 324 and engagement holes 326 such that the support shelf 329 may be repositioned with respect to the slide brackets 322 along the longitudinal axis of the drawer slides 333.
In
As can be seen, the embodiment of
The present embodiment is further modified to incorporate a support plate 360, the support plate 360 being rigidly attached to the rest of the support arm 339. The support plate 360 greatly improves stiffness of the support arm 339 and reduces the deflection of the support arm 339 in use. This increased rigidity gives the impression of greater quality without appreciably increasing the weight. The support plate 360 is welded, glued, riveted, or bolted to the rest of the support arm 339. Any other known attachment means may be used.
The present embodiment fluffier comprises a spring element 362 which attaches between the support arm 339 and the support shelf 329. In the present embodiment, the spring element 362 is attached between the support plate 360 and the support shelf 329. The spring element 36.2 provides a force which assists the deployment and stowage of the tray table. When stowing the tray table, the spring element 362 provides a force which resists the compression of the spring element 362. This serves to reduce the apparent weight of the support arm 339 and the tray table. Not only does this make it easier for users to stow the tray table, but it reduces the likelihood that the tray table will crash down onto the support shelf 329. This is particularly valuable when used at night, where quiet operation is particularly desirable.
During deployment, the force applied by the spring element 362 assists deployment because it also provides a force which assists the unfolding. In the preferred embodiment, the force provided by the spring element 362 is less than the force required to deploy the tray table. Thus, the tray table does not self-deploy. Furthermore, the arrangement of the spring element 362 can be adjusted to provide different levels of assistance at different positions of the support arm 339. In the present configuration, the spring element 362 provides the least assistance when the tray table and support arm 339 are in the first or second stowed positions, and provides greater assistance as the tray table and support arm 339 are unfolded toward the first or second deployed positions. The spring element 362 may be a gas spring, a coil spring, or any other type of conventional spring element capable of providing a force which resists compression. In some other embodiments, the spring element 362 may also provide a damping force. This can be particularly valuable for ensuring that the tray table does not crash down onto the support shelf 329 during stowage.
It is conceived that either the spring element 362 or the support plate 360 be eliminated in alternate embodiments. The spring element 362 may be attached to another portion of the support arm 339 if the support plate 360 is not required. :In these embodiments, the spring clement 362 might be offset to one side, rather than arranged along the longitudinal centerline of the support shelf 329. Alternately, the support plate 360 may be used, but the spring element 362 may be eliminated if the weight of the tray table and the support arm 339 are not so heavy as to require additional support or cost reduction is deemed a higher priority.
In
When the pivot block. 463 is properly positioned, the indent can be successfully eliminated without any loss of functionality. Other embodiments utilize the indent to provide an indication of the proper positioning of the tray table 413 with respect to the support arm 439 for stowing the tray table 413. However, the present embodiment merely requires that the tray table 413 be translated until the pivot block 463 reaches the end of the pivot member 467. The tray table 413 can then be folded without risk of impact with the night table. Even if the tray table 413 is not translated until it stops, the tray table 413 will merely extend further out away from the night table than desired. No damage will result from the failure to position the tray table 413 in the proper position prior to stowage.
Turning to a sectional view of the pivot stop arrangement of the fifth embodiment is shown. As can be seen., the tray table apparatus has a support shelf 429, on which a base plate 436 is mounted. An adjustment well 452 sits within the base plate and engages a pivot stop 449. The pivot stop 449 engages the support arm in the same manner as with other embodiments of the invention, but is constructed in a slightly different manner. The pivot stop 449 has a screw element 451 coupled to a threaded receptacle 455 in the adjustment well 452. The pivot stop 449 further comprises a knob 453, an adjustment cap 454, and a lower knob 456. The knob 453 allows adjustment from above the support shelf 429, and is rigidly coupled to the screw element 451. Similarly, the lower knob 456 is also rigidly coupled to the screw element 451 to permit adjustment from underneath the support shelf 429. The adjustment cap 454 is free to rotate with respect to the screw element 451. Thus, the user may have the option of, adjusting the pivot stop 449 on either side of the support shelf 429. In alternate embodiments, the knob 453 is eliminated and only the lower knob 456 retained. The knob 453 and the lower knob 456 may be attached in any known means, including gluing, welding, interlocking features, and the like.
Other embodiments of the tray table apparatus are conceived, such as the use of a centrally located pivot. Rather than causing the support arm to rotate about one side of the support shelf, it is conceived that this rotation may occur along the centerline of the support shelf. The support arm may then be reconfigured such that it is a linkage which pivots about the lateral centerline of the support shelf and is reversible without the need to detach the support shelf or the base plate from the rest of the apparatus. In this embodiment, the first and second stowed positions may be identical. This may result in a support arm consisting of more than two separate links, either one of the links being adapted to telescope. In yet other embodiments, the support arm may consist of multiple links which can be folded in different arrangements to permit transitioning from a first deployed position to a second deployed position.
In yet other embodiments, the support arm may be configured to pivot, such that it can be swiveled from the first configuration to the second configuration. Thus, the support arm may be rotatable about an axis, the axis being perpendicular to a plane formed between the drawer slides, such as the plane formed by the upper surface of the support shelf It may be possible to provide detent features which latch the support arm in the first configuration or the second configuration. Other embodiments may utilize reversible drawer slides or reversible furniture which allows the apparatus to be reconfigured from the first configuration to the second configuration. Furthermore, in any of the above embodiments, a “holdout slide” may be used for the drawer slides to ensure that the drawer slides do not retract while the tray table is deployed. This can help to ensure that the tray table maintains the user-set position and does not inadvertently retract while in use.
While the invention has been described with respect to specific examples including presently preferred modes of carrying out the invention, those Skilled in the art will appreciate that there are numerous variations and permutations of the above described systems and techniques. It is to be understood that other embodiments may be utilized and structural and functional modifications may be made without departing from the scope of the present invention. Thus, the spirit and scope of the invention should be construed broadly as set forth in the appended claims.
The present application is a continuation-in-part of U.S. patent application Ser. No. 14/803,878 filed Jul. 20, 2015, issuing as U.S. Pat. No. 9,572,425, which in turn claims the benefit of U.S. Provisional Patent Application Ser. No. 62/026,062, filed Jul. 18, 2014, the disclosures of which are incorporated herein by reference in their entireties.
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Number | Date | Country | |
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20170156491 A1 | Jun 2017 | US |
Number | Date | Country | |
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62026062 | Jul 2014 | US |
Number | Date | Country | |
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Parent | 14803878 | Jul 2015 | US |
Child | 15437774 | US |