Patent Publication Number: US-2022225780-A1

Title: Sofa bed

Description:
PRIORITY CLAIM 
     This application claims the benefit of Chinese Patent Application No. 202110062622.7, filed Jan. 18, 2021, which is incorporated by reference. 
     FIELD 
     The present disclosure relates to the design of furniture, and specifically to a sofa bed. 
     BACKGROUND 
     The need of the consumer for household furniture presents a trend of diversification, wherein sofa beds have already become a type of popular furniture product. Conventional sofa beds have certain drawbacks, such as for example, the switching of the conventional sofa beds between sofa and bed positions is not so easily achieved. Conventional sofa beds are also not necessarily stable in the sofa position. The angle between the seat and the backrest may vary, which affects user comfort. 
     Therefore, there is a need for improved folding sofa beds. 
     SUMMARY 
     A main object of the present invention is to provide a sofa bed which is easily switchable between two in-use positions and easy to operate. Furthermore, in a predetermined switching procedure and a predetermine use procedure, an angle between a seat portion and a backrest portion can be locked to improve the reliability of the operation. In the switching operation, by allowing a pin to slide in a sliding groove in an extension direction having a transverse component and a vertical component, the burden of an user in operation can be lightened, and the switching operation can be achieved quickly and easily. Furthermore, the sofa bed may be provided with a plurality of detachable elastic modules which are simple to mount and convenient to operate. Thus, the user may manually mount then to obtain a sofa bed having a better degree of comfort. 
     In accordance with one aspect of the present disclosure, there is provided a sofa bed, including: 
     a plurality of elastic modules each comprising a conical spring and configured to receive a spring bracket of the conical spring; 
     a body frame comprising a plurality of supports arranged perpendicular to each other, the supports at one side facing a user being provided with slide rails each engageable with a bottom of the respective spring bracket to allow the plurality of elastic modules to slide on the slide rails; and 
     armrests disposed at two sides of the body frame along a longitudinal direction of the body frame, respectively, 
     wherein the slide rails on the body frame are configured to enable the plurality of elastic modules to be mounted on the body frame from an outside of the body frame and to slide thereon to predetermined mounting positions, such that the body frame at one side facing the user is arranged densely with the plurality of elastic modules. 
     According to the solution, the sofa bed may be provided with thereon with a plurality of removable elastic modules that allow simple installment and easy operation. In the circumstance, a user can manually install those elastic modules to obtain a more comfortable sofa bed. 
     According to a preferable embodiment of the present invention, the spring bracket of each of the elastic modules comprises a base including spring mounting seats, each of the spring mounting seats having a spring fixing part for fixing an end of the conical spring. 
     According to another preferable embodiment of the present invention, the spring bracket of each of the elastic module further comprises: 
     an end cap disposed opposite to the respective spring mounting seat and cooperating with the latter to hold the conical spring, wherein the end cap abuts against an end of the conical spring opposite to the other end thereof fixed in the spring mounting seat; and 
     a set or a plurality of sets of flexible straps, each set of flexible straps comprising a plurality of flexible straps spaced apart and distributed evenly between a respective pair of the spring mounting seat and the end cap, the flexible straps disposed outside the conical spring when the conical spring is held between the respective pair of the spring mounting seat and the end cap. 
     According to a further preferable embodiment of the present invention, each of the elastic modules further comprises a cover wrapping the conical spring of the elastic module. 
     According to a further preferable embodiment of the present invention, the conical spring is mounted within the spring bracket in a predetermined initial compressive force. 
     In view of the above solutions, the elastic modules have a favorable structure, which can maintain stability and offer certain elasticity, thus providing a better user experience. 
     According to a further preferable embodiment of the present invention, the plurality of slide rails are disposed on supports extending in the longitudinal direction, each of the slide rails having an end opened to receive the elastic module. 
     According to a further preferable embodiment of the present invention, the plurality of slide rails are disposed on supports extending in a transverse direction, each of the slide rails having an end opened to receive the elastic module. 
     According to a further preferable embodiment of the present invention, the plurality of slide rails comprise a plurality of longitudinal slide rails disposed on supports extending in the longitudinal direction and a plurality of transverse slide rails disposed on supports extending in a transverse direction, and the longitudinal slide rails and the transverse slide rails are connected to each other at intersections thereof, enabling switching of the elastic modules in slide rails. 
     According to a further preferable embodiment of the present invention, the transverse slide rails are disposed in a middle of the body frame in the longitudinal direction, ends of the transverse slide rails are opened to receive the elastic modules from an outside of the body frame, and the plurality of slide rails are configured to cause the plurality of elastic modules to enter into the transverse slide rails on the body frame from the ends of the body frame and to be switched to the respective longitudinal slide rails at the intersections of the transverse slide rails and the longitudinal slide rails. 
     In light of the above solutions, it is convenient for a user to install or uninstall the elastic modules as specifically required, and the assembling manner can be varied with the dimensions of the sofa bed. 
     According to a further preferable embodiment of the present invention, the body frame comprises a seat and a backrest disposed adjacent to each other, the seat and the backrest configured to be folded or unfolded around a locking mechanism to switch the body frame between a bed configuration and a sofa configuration, and 
     the armrests each are formed thereon with a slideway to guide movement of the locking mechanism, and 
     wherein the body frame comprises the locking mechanism configured to lock the backrest relative to the seat in a predetermined angle when the sofa bed is configured as pivoting the backrest and the seat around the locking mechanism relative to each other, and the armrests are connected via the locking mechanism to the body frame, to cause, in a locked state, a part structure of the locking mechanism to drive the body frame to displace under the guidance of the slideway. 
     According to a further preferable embodiment of the present invention, the locking mechanism comprises: 
     a seat connecting rod attached to a transverse edge of the seat and extending along the transverse edge: 
     a backrest connecting rod attached to a transverse edge of the backrest located at the same side as the transverse edge of the seat and extending along the transverse edge of the backrest; and 
     a pivot connecting the seat connecting rod and the backrest connecting rod, to cause the backrest and the seat to pivot relative to each other. 
     According to the solution, in the process of predetermined switching and predetermined use, the angle between the seat and the backrest can be locked such that the operation reliability can be improved; during switching, the pin is slidable within the chute along the extending direction of the transverse component or vertical component, thereby reducing the user&#39;s burden in operation and enabling the switch operation to be fulfilled quickly and effortlessly. 
     According to a further preferable embodiment of the present invention, the body frame is configured to release locking between the seat connecting rod and the backrest connecting rod when the seat in a locked state is operated to pivot towards the backrest. 
     According to a further preferable embodiment of the present invention, one of the seat connecting rod and the backrest connecting rod is provided with a ratchet, the other of the seat connecting rod and the backrest connecting rod is provided with a pawl, and the ratchet and the pawl cooperate with each other to lock the backrest relative to the seat in a predetermined angle. 
     According to a further preferable embodiment of the present invention, the ratchet at an outer edge is provided with a recess recessed inwards in a radial direction of the ratchet, the pawl is provided with a protrusion corresponding with the recess, and the protrusion is configured to cause the protrusion to engage the recess, thereby locking the backrest and the seat. 
     According to a further preferable embodiment of the present invention, the ratchet at an outer edge is provided with a recess recessed inwards in a radial direction of the ratchet, the pawl is provided with a protrusion corresponding with the recess, and the protrusion is configured to cause the protrusion to engage the recess, thereby locking the backrest and the seat. 
     According to a further preferable embodiment of the present invention, the seat and the backrest are of a rectangular structure, respectively. 
     According to a further preferable embodiment of the present invention, a side of the seat extending in the longitudinal direction is disposed adjacent to a side of the backrest extending in the longitudinal direction. 
     According to a further preferable embodiment of the present invention, the body frame is configured to lock the backrest relative to the seat in a plurality of predetermined angles. 
     According to a further preferable embodiment of the present invention, the body frame further comprises a driven beam which is pivotably connected at one end to the armrest frame and at the one end to the backrest. 
     According to a further preferable embodiment of the present invention, the armrest frame comprises an armrest frame body substantially of a U-shape and a reinforcement transverse beam connected between two legs of the armrest frame body, and the slideway is formed on the reinforcement transverse beam. 
     According to a further preferable embodiment of the present invention, the locking mechanism is provided with a pin extending towards the outside of the body frame, the slideway is a chute formed on the reinforcement transverse beam, an end thereof is positioned to be higher than the other end of the slideway, and the end is opened towards an upper side of the armrest frame to receive a pin of the locking mechanism. 
     According to a further preferable embodiment of the present invention, the reinforcement transverse beam is provided with a slide rod, and the locking mechanism is provided with a slide sleeve configured to be sleeved on the slide rod and slide along the slide rod. 
     According to a further preferable embodiment of the present invention, the reinforcement transverse beam at a lower side is provided with a slide rod which, together with the reinforcement transverse beam, defines a chute. 
     According to a further preferable embodiment of the present invention, the reinforcement transverse beam has a section of a concave shape, and the pin at an outer end is provided with a protrusion fitting with the concave shape. 
     According to a further preferable embodiment of the present invention, the sofa bed comprises a bottom support structure supported below the backrest and the seat and connected fixedly to the two armrests. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Reference may be made to preferred embodiments shown in the figures to enable better understanding of the above and other objects, features, advantages and functions of the present invention. The same or like reference numerals in the figures denote the same or like parts. Those skilled in the art should appreciate that the figures are intended to schematically illustrate the preferred embodiments of the present invention, and not intended to limit the scope of the present invention, and all parts shown in the figures are not drawn to scale. 
         FIG. 1  is a perspective schematic view of a main body frame of a sofa bed according to a preferred embodiment of the present invention w % ben it is arranged in a bed state; 
         FIG. 2  is a side view of the sofa bed shown in  FIG. 1 : 
         FIG. 3  is a perspective schematic view of the main body frame of  FIG. 1  in a sofa state: 
         FIG. 4  is a side view of the sofa bed shown in  FIG. 3 ; 
         FIG. 5  is an exploded schematic view of a junction of a seat portion and a backrest portion in the present embodiment: 
         FIG. 6A - FIG. 6F  are side views of the main body frame according to the preferred embodiment, which sequentially show a process in which the sofa transitions from a first in-use state to a second in-use state, and then return back to the first in-use state: 
         FIG. 7A  shows a schematic diagram of a sliding groove in the preferred embodiment; 
         FIG. 7B - FIG. 7D  are alternative implementations of the sliding groove shown in  FIG. 7A ; 
         FIG. 7E  is a cross-sectional view taken along line C-C indicated in  FIG. 7D , wherein hatching lines are omitted in  FIG. 7E  for a clearer illustration purpose: 
         FIG. 8  is a schematic diagram of an elastic module of a sofa bed according to a preferred embodiment of the present invention: 
         FIG. 9 - FIG. 11  are schematic diagrams of a process in which an elastic module is mounted to the main body frame; 
         FIG. 12  is a schematic diagram after elastic modules are mounted on the main body frame; 
         FIG. 13  and  FIG. 14  are respective schematic diagrams showing shapes of a finished product of the sofa bed. 
     
    
    
     DETAILED DESCRIPTION OF EMBODIMENTS 
     Specific embodiments of the present prevention will now be described in detail with reference to the figures. What are described here are only preferred embodiments according to the present invention. Those skilled in the art can implement other embodiments of the present invention on the basis of the preferred embodiments, and said other embodiments also fall within the scope of the present invention. 
     The invention provides a sofa bed.  FIG. 1 - FIG. 7E  show at least partial structures according to some preferred embodiments of the present invention. First, it will be appreciated that “transverse direction” and “longitudinal direction” mentioned in the present invention refer to absolute directions, and respectively two directions perpendicular to each other in a horizontal plane, wherein the transverse direction is shown by X in the figures, and the longitudinal direction is shown by Y in the figures; “widthwise direction” and “lengthwise direction” mentioned in the present invention refer to relative directions relative to a rectangle formed by a seat portion and a backrest portion, but the lengthwise direction always coincides with the longitudinal direction Y, the widthwise direction coincides with the transverse direction X only when the seat portion and/or backrest portion are placed horizontally. A height direction mentioned in the context is an absolute vertical direction and shown by Z in the figures. 
       FIG. 1 - FIG. 14  show some preferred embodiments of the present invention. 
     Referring to  FIG. 1  through  FIG. 4 , a sofa bed according to a preferred embodiment of the present application comprising a main body frame  100  which includes a seat portion  4 , a backrest portion  3 , a seat portion connecting rod  41 , a backrest portion connecting rod  31 , and two armrest frames  2 . The seat portion  4  and the backrest portion  3  are both formed as a rectangular structure, which may be a rectangular frame structure or a rectangular plate-like structure. A longitudinal edge of the seat portion  4  and a longitudinal edge of the backrest portion  3  are butted together. 
     The seat portion connecting rod  41  is fixed on a widthwise edge of the seat portion  4 , the backrest portion connecting rod  31  is fixed on a widthwise edge of the backrest portion  3 , and the seat portion connecting rod  41  and the backrest connecting rod  31  are connected together in a way that they are pivotable relative to each other. When the seat portion connecting rod  41  and the backrest portion connecting rod  31  pivot relative to each other, an angle formed therebetween increases or decreases. It will be appreciated that the “angle” mentioned in the present invention refers to an angle less than or equal to 180°. 
     The two armrest frames  2  are provided at both ends of the seat portion  4  and the backrest portion  3  in the longitudinal direction, and each of the armrest frames  2  is provided with a slideway that opens toward the backrest portion  3  and the seat portion  4  and partially extends in the transverse direction. In the present embodiment, the slideway is a sliding groove  211 , and a rear end  211   b  of the sliding groove  211  is positioned lower than a front end  211   a  of the sliding groove  211 . 
     The exploded schematic view of the pivotal connection of the seat portion  4  and the backrest portion  3  is shown in  FIG. 5 . Referring to  FIG. 5 , the seat portion connecting rod  41  and the backrest portion connecting rod  31  are engaged with each other at a locking mechanism  34 , and the locking mechanism  34  has a pin  341  protruding from a side facing the armrest. The front end  211   a  of the sliding groove  211  is provided with an upward opening, so that the pin  341  can enter into the sliding groove  211  from the front end  211   a  of the sliding groove  211  and slide in the sliding groove  211 . A special-shaped gear and a gear matching claw are provided at the locking mechanism  34 , and they are respectively disposed on the seat portion connecting rod  41  and the backrest portion connecting rod  31 . The special-shaped gear is for example a ratchet wheel  342 , wherein the edge of the ratchet  342  is provided with a recessed portion that is recessed in a radial direction of the ratchet  342 . The gear matching pawl is provided with a protruding portion that mates with the recessed portion. The recessed portion and the protruding portion are positioned such that when the backrest portion  3  and the seat portion  4  are located at a predetermined obtuse angle, the protruding portion is embedded or inserted in the recessed portion to achieve locking. The seat portion  4  is provided with a seat portion insertion sleeve  42  for accommodating the seat portion connecting rod  41 , and the backrest portion  3  is provided with a backrest portion insertion sleeve  32  for accommodating the backrest portion connecting rod  31 . 
     Furthermore, each armrest frame  2  includes an armrest frame body  22  and a reinforcing transverse beam  21 , wherein the sliding groove  211  is disposed on the reinforcing transverse beam  21 , and an extension direction of the reinforcing transverse beam  21  coincides with that of the sliding groove  21 , i.e., the rear end  211   b  of the reinforcing transverse beam  21  is also positioned lower than the front end  211   a  of the reinforcing transverse beam  21 . The armrest frame body  22  further includes two upright columns extending in the vertical direction and a body transverse beam connected at the tops of the two upright columns. The reinforcing transverse beam is connected to the middle of the two upright columns and is parallel to the body transverse beam. 
     In addition to the armrest frame  2 , the supporting and fixing structure of the sofa bed further includes a bottom supporting structure  24  which is disposed under the backrest portion  3  and the seat portion  4  and is fixedly connected to the two armrest frames  2 . The bottom supporting structure  24  includes for example a bottom supporting structure longitudinal beam, a bottom supporting structure transverse beam  23  and legs  25 . The sofa bed further includes a driven beam  26 , one end of which is pivotally connected to the armrest frame  2 , and the other end of which is pivotally connected to the backrest portion  3 . 
       FIG. 6A - FIG. 6F  show a process in which the main body frame  100  changes from a first in-use position (at which the sofa bed is used as a bed) to a second in-use position (at which the sofa bed is used as a sofa) and then returns back to the first in-used position. 
     First, referring to  FIG. 6A , when the main body frame  100  is located at the first in-use position, the backrest portion  3  and the seat portion  4  are both horizontal, and the angle formed therebetween is a straight angle. The angle formed between the backrest portion connecting rod  31  and the seat portion connecting rod  41  is also substantially a straight angle, and the pivot axis of the locking mechanism  34  is substantially located adjacent to the front end  211   a  of the sliding groove  211 . At this time, the backrest portion connecting rod  31  and the seat portion connecting rod  41  are not locked, thereby allowing the seat portion  4  to be operated to pivot toward a position where the angle between the seat portion  4  and the backrest portion  3  is reduced. The direction of the pivoting is shown by an arrow in  FIG. 6A . 
     When it requires to adjust the main body frame  100  to the second in-use position, the seat portion  4  can be pivoted in the direction shown by the arrow in  FIG. 6A , to a position shown in  FIG. 6B . At the position shown in  FIG. 6B , the pivoting between the backrest portion connecting rod  31  and the seat portion connecting rod  41  is locked. Specifically, for example, the locking mechanism  34  may be provided with a special-shaped ratchet  342  and a special-shaped pawl which have shapes matching to each other. The special-shaped ratchet  342  and the special-shaped pawl are shaped to snap fit together at the position shown in  FIG. 6B  to prevent the seat portion  4  from further rotating relative to the backrest portion  3 . At this time, the angle between the seat portion  4  and the backrest portion  3  is a, which is an obtuse angle. The “predetermined obtuse angle” mentioned in the present invention may be understood as a shown in  FIG. 6B . 
     At this time, the pin  341  at the locking mechanism  34  can enter into the sliding groove  211  from the front end  211   a  of the sliding groove  211 . Then, as shown in  FIG. 6C , the seat portion  4  may be pressed down along an arc-shaped arrow, and meanwhile the pin  341  can drive the combination of the backrest portion  3  and the seat portion  4  to slide in a direction indicated by a straight arrow in  FIG. 6C . After this operation, the combination of the backrest portion  3  and the seat portion  4  can reach the second in-use position as shown in  FIG. 6D . 
     In the structure shown in  FIG. 6B  through  FIG. 6D , the backrest portion connecting rod  31  and the seat portion connecting rod  41  are locked to each other at the locking mechanism  34 , and the angle between the backrest portion  3  and the seat portion  4  is always α. 
     When it is required to change the main body frame  100  from the second in-use position to the first in-use position, the seat portion  4  can be manually operated to further pivot toward the backrest portion  3  in the direction indicated by the arrow as shown in  FIG. 6D . The action for example can make the protruding portion of the pawl disengage from the recessed portion of the ratchet, thereby releasing the locking between the seat portion connecting rod  41  and the backrest portion connecting rod  31 . 
     Referring to  FIG. 6E , after the seat portion  4  is pivoted in the direction indicated by arrow A, the locking between the seat portion connecting rod  41  and the backrest portion connecting rod  31  is released. After the unlocking, the pin  341  is slided in the sliding groove  211  toward the front end  211   a  in the direction indicated by the arrow B, thereby driving the backrest portion  3  and the seat portion  4  to reach the position shown in  FIG. 6F , so that the main body frame  100  returns to the first in-use position. 
       FIG. 7A  shows details of the sliding groove  211  in  FIG. 1  through  FIG. 6F . In the  FIG. 7A , the sliding groove  211  is a groove structure formed on the reinforcing transverse beam  21  itself of the armrest frame  2 .  FIG. 7B  through  FIG. 7D  show some alternative embodiments of  FIG. 7A . 
     In the embodiment shown in  FIG. 7B , the reinforcing transverse beam  21   a  is provided with a sliding rod  212 , and a sliding sleeve  341   a  is fixedly fixed at the locking mechanism of the backrest portion connecting rod and the seat portion connecting rod to engage with and slide on the sliding rod  212 . 
     In the embodiment shown in  FIG. 7C , a sliding rod is disposed under the reinforcing transverse beam  21   b , the sliding rod and the lower edge of the reinforcing transverse beam  21   b  jointly define a sliding groove  213 , and a pin  341   b  fixedly disposed at the locking mechanism of the backrest portion connecting rod and the seat portion connecting rod can engage with and slide in the sliding groove  213 . 
     In the embodiment shown in  FIG. 7D , the reinforcing transverse beam  21   c  is a special-shaped beam whose cross section is shown in  FIG. 7E . Referring to  FIG. 7E , the cross-section of the reinforcing transverse beam  21   c  is in a shape of a channel or U ( ), and a pin  341   c  is fixedly disposed at the locking mechanism of the backrest portion connecting rod and the seat portion connecting rod, wherein a projection having a shape that can mate with the U shape is provided at an outer end of the pin  341   c , and the projection can be adaptively received in the U-shaped beam so that the pin  341   c  can slide along the sliding groove  214  without disengaging from the sliding groove  214 . Two stoppers are provided in the U-shaped beam, wherein a front stopper  214   b  can constitute the front end of the sliding groove  214 , and a rear stopper  214   a  can constitute the rear end of the sliding groove  214 . 
     In addition to the above structure, the sofa bed according to the present invention may further include a plurality of elastic modules.  FIG. 8  shows an example of an elastic module. Referring to  FIG. 8 , each of the elastic modules  200  includes a conical spring  110  and a spring bracket  121  accommodating the conical spring. The spring bracket  121  includes a base, an end cover  122  and one or more sets of flexible straps  123 . The base includes a base of a spring mounting seat, and each spring mounting seat has a spring fixing portion for fixing one end of the conical spring  110 . The end cover  122  is arranged opposite to and cooperative with the corresponding spring mounting seat to hold the conical spring  110 , wherein the end cover  122  abuts against the other end of the conical spring  100  opposite to tie end fixed in the spring mounting seat. Each set of flexible straps  123  includes a plurality of flexible straps spaced apart and evenly arranged between a corresponding pair of spring mounting seat and end cap. When one conical spring  110  is retained between the corresponding pair of spring mounting seat and end cap  122 , the flexible straps  123  are located outside the conical spring  110 . Alternatively, the sofa bed further includes a cover covering the conical springs. 
     Referring to  FIG. 9  through  FIG. 11 , the main body frame is provided with slide rails (including a transverse slide rail  400  and longitudinal slide rails  3 X)) which are configured in a way that a plurality of elastic modules  200  can be mounted on the main body frame from the outside of the main body frame and slide to a predetermined mounting position, so that a plurality of elastic modules  200  are closely arranged on a side of the main body frame facing the user (as shown in  FIG. 12 ). 
     Preferably, the conical spring is mounted in the spring bracket with a predetermined initial compression force. 
     For example, referring to  FIG. 9 , the plurality of slide rails includes longitudinal slide rails  300 , the longitudinal ends  301  of which are open, so that the elastic modules  200  can be received. Alternatively, the plurality of slide rails includes transverse side rails  400  whose transverse ends  401  are open so that the elastic modules  200  can be received. 
     Referring to  FIG. 10  and  FIG. 11 , the plurality of slide rails include a plurality of longitudinal slide rails  300  extending in the longitudinal direction and a transverse slide rail  400  extending in the transverse direction. The longitudinal slide rails and transverse slide rails communicate at their intersections to facilitate the elastic modules  200  to switch side rails. Specifically, the transverse slide rail  400  is disposed in the middle of the longitudinal direction Y of the main body frame, and the transverse end  401  of the transverse slide rail  400  is opened to receive the elastic module  200  from the outside of the main body frame. The arrangement of the plurality of slide rails are designed such that the plurality of elastic modules  200  can enter the transverse slide rail  400  on the main body frame from the end of the main body frame, and switch to the longitudinal slide rails  300  at the intersection of the transverse slide rails  400  and the longitudinal slide rail  300 . 
     In a state that a plurality of elastic modules  200  are closely arranged on the side of the main body frame facing the user as shown in  FIG. 12 , an outer covering may be further provided on the elastic modules to obtain a sofa bed finished product as shown in  FIG. 13  and  FIG. 14 .  FIG. 13  shows a configuration of the sofa bed finished product as a bed;  FIG. 14  shows a configuration of the sofa bed finished product as a sofa. 
     The above depictions of various embodiments of the present invention are provided to those having ordinary skill in the art for depiction purpose, and are not intended to exclude other embodiments from the present prevention or limit the present prevention to a single disclosed embodiment. As described above, various alternatives and modifications of the present prevention will be apparent to those of ordinary skill in the art. Accordingly, although some alternative embodiments have been described in detail, those having ordinary skill in the art will understand or readily develop other embodiments. The prevention is intended to cover all alternatives, modifications and variations of the present prevention described herein, as well as other embodiments falling within the spirit and scope of the present prevention described herein.