Patent Publication Number: US-8539888-B2

Title: Table-board-partition

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims priority based on U.S. Provisional Application No. 61/452,003, filed Mar. 11, 2011. The contents of each of which is incorporated by reference in their entirety. 
    
    
     TECHNICAL FIELD OF THE INVENTION 
     The present invention relates in general to the field of office furniture, and more specifically to a transforming project table, white erase board, and office partition all-in-one powered by, e.g., a pneumatic, spring, electric or hydraulic system. 
     STATEMENT OF FEDERALLY FUNDED RESEARCH 
     None. 
     INCORPORATION-BY-REFERENCE OF MATERIALS FILED ON COMPACT DISC 
     None. 
     REFERENCE TO A SEQUENCE LISTING 
     None. 
     BACKGROUND OF THE INVENTION 
     Without limiting the scope of the invention, its background is described in connection with office furniture designs. 
     U.S. Pat. No. 5,313,892 issued to Tice (1994) describes a pneumatic table that adjusts to various positions. Pneumatic cylinders controlled by a pneumatic system raise and lower the tabletop to a desired position. Brakes are used to lock the tabletop once it is in its desired position. The tabletop tilts forward and backward to vary the operating position of a piece of machinery located on the tabletop. A self-adjusting foot treadle adjusts when the tabletop height is changed such that the linkage between the treadle and the tabletop is maintained. The treadle also adjusts to various positions for the comfort of the operator. 
     U.S. Patent Application No. 20040123780 (Kenneth, 2002) describes a portable and expandable project plan table that includes a table top that is pivotally connected to a frame having a generally truncated right triangular prism shape. The table top is hinged to permit access to storage for drafting tools and papers within the frame and may be locked to prevent movement when the table is transported. The legs of the table pivot between vertical for use and horizontal for transporting, and are designed to overlap in the folded position in a compact arrangement. Each leg is independently height adjustable to permit the table to be made level on uneven surfaces, and wheels on each leg facilitate movement of the table in the open-for-use position. The table is constructed of durable materials to permit use out of doors or in adverse conditions. 
     SUMMARY OF THE INVENTION 
     The present invention describes a transforming project table, white erase board, and office partition all-in-one powered by a pneumatic system. 
     The present invention in one embodiment describes an adjustable work surface capable of movement along a vertical axis, capable of a 360-degree rotation around a pivot or both comprising: (i) a generally planar tabletop defining a plane, wherein the table top comprises a work (top) surface, a bottom surface, a front edge, a back edge, a left edge, and a right edge, (ii) a generally vertical support member disposed for a movement in a generally vertical direction, wherein a top portion of the vertical support member is attached to the right edge and the left edge of the tabletop by one or more pivot joints, wherein the vertical support member further comprises one or more supporting bars extending along a length of the support member and attached to a bottom portion of the support member, wherein the bars are substantially parallel to each other and are capable of movement along the vertical direction concomitantly with a vertical movement of the support member, (iii) a drive system or mechanism for moving the vertical support member in the vertical direction, (iv) a generally vertical frame structure for receiving the vertical support member, and (v) two or more wheels for ease of movement of the work surface, wherein the wheel are attached directly to the frame structure or may be attached to a rod or a similar device welded onto or attached to the frame structure. The frame structure of the adjustable work surface of the present invention further comprises: a) a first stationary support bar attached to a top portion of the frame structure and extending along the length of the frame structure, wherein the bar comprises a ridge or a groove for receiving the front edge or the back edge of the planar tabletop, wherein the bar is substantially parallel to the one or more bars of the support member, wherein the bar is parallel to the tabletop when the tabletop is horizontal at a 0° angle and is perpendicular to the tabletop when the tabletop is vertical at a 90° angle and b) a second stationary support bar attached to a bottom portion of the frame structure, wherein the bar is substantially parallel to the first stationary support bar and to the one or more bars of the support member. 
     In one aspect tabletop comprises a white board, an easel, a project table, a partition board, or combinations and modifications thereof. In another aspect the first stationary support bar is a top edge of a planar surface, wherein the planar surface enables functioning of the work surface as a partition and comprises a material similar to the planar tabletop. In another aspect the ridge or the groove in the first stationary support bar locks the tabletop at a 90° angle. In yet another aspect the adjustable work surface further comprises a wheel locking mechanism for preventing movement of the work surface during use and a mechanism for removing the wheels once the work surface is placed at a desired location. In related aspects the work surface is used as a project table when the tabletop is substantially horizontal or at a 0° angle and is used as white board or an easel when the tabletop is adjusted at an angle between 45° and 90°. In another aspect the work surface is used as a partitioning device or partition board when the work surface is substantially vertical or at a 90° angle. In another aspect the drive system is a pneumatic, spring, electric or hydraulic drive system. 
     Another embodiment of the present invention discloses a transforming all-in-one powered system comprising a project table, a white erase board, and an office partition device capable of movement along a vertical axis, capable of a 360-degree rotation around a pivot or both comprising:
     (i) a generally planar tabletop defining a plane, wherein the table top comprises a work (top) surface, a bottom surface, a front edge, a back edge, a left edge, and a right edge,   (ii) a generally vertical support member disposed for a movement in a generally vertical direction, wherein a top portion of the vertical support member is attached to the right edge and the left edge of the tabletop by one or more pivot joints, wherein the vertical support member further comprises one or more supporting bars extending along a length of the support member and attached to a bottom portion of the support member, wherein the bars are substantially parallel to each other and are capable of movement along the vertical direction concomitantly with a vertical movement of the support member,   (iii) a drive system or mechanism for moving the vertical support member in the vertical direction,   (iv) a generally vertical frame structure for receiving the vertical support member, wherein the frame structure further comprises: a) a first stationary support bar attached to a top portion of the frame structure and extending along the length of the frame structure, wherein the bar comprises a ridge or a groove for receiving the front edge or the back edge of the planar tabletop, wherein the bar is substantially parallel to the one or more bars of the support member, wherein the bar is parallel to the tabletop when the tabletop is horizontal at a 0° angle and is perpendicular to the tabletop when the tabletop is vertical at a 90° angle and a second stationary support bar attached to a bottom portion of the frame structure, wherein the bar is substantially parallel to the first stationary support bar and to the one or more bars of the support member, and   (v) two or more wheels for ease of movement of the work surface, wherein the wheel are attached directly to the frame structure or may be attached to a rod or a similar device welded onto or attached to the frame structure.   

     In one aspect of transforming system of the present invention the ridge or the groove in the first stationary support bar locks the tabletop at a 90° angle. In another aspect the first stationary support bar is a top edge of a planar surface. In yet another aspect the planar surface enables functioning of the system surface as a partition and comprises a material similar to the planar tabletop. In another aspect the system further comprises a wheel locking mechanism for preventing movement of the system during use. In a specific aspect the system is used as a project table when the tabletop is substantially horizontal or at a 0° angle. In related aspects the system is used as white board or an easel when the tabletop is adjusted at an angle between 45° and 90° or as a partitioning device or partition board when the work surface is substantially vertical or at a 90° angle. In yet another aspect the drive system is a pneumatic, spring, electric or hydraulic drive system. 
     In yet another embodiment the instant invention provides a method of transforming an open space, dividing a large area into one or more smaller areas or both comprising the steps of: providing an open space, a large area or both, providing one or more drive operated partitioning devices capable of movement along a vertical axis, capable of a 360-degree rotation around a pivot or both comprising: (a) a generally planar tabletop defining a plane, wherein the table top comprises a work (top) surface, a bottom surface, a front edge, a back edge, a left edge, and a right edge, (b) a generally vertical support member disposed for a movement in a generally vertical direction, wherein a top portion of the vertical support member is attached to the right edge and the left edge of the tabletop by one or more pivot joints, wherein the vertical support member further comprises one or more supporting bars extending along a length of the support member and attached to a bottom portion of the support member, wherein the bars are substantially parallel to each other and are capable of movement along the vertical direction concomitantly with a vertical movement of the support member, (c) a drive system or mechanism for moving the vertical support member in the vertical direction, (d) a generally vertical frame structure for receiving the vertical support member, wherein the frame structure further comprises: (i) a first stationary support bar attached to a top portion of the frame structure and extending along the length of the frame structure, wherein the bar comprises a ridge or a groove for receiving the front edge or the back edge of the planar tabletop, wherein the bar is substantially parallel to the one or more bars of the support member, wherein the bar is parallel to the tabletop when the tabletop is horizontal at a 0° angle and is perpendicular to the tabletop when the tabletop is vertical at a 90° angle and (ii) a second stationary support bar attached to a bottom portion of the frame structure, wherein the bar is substantially parallel to the first stationary support bar and to the one or more bars of the support member, and (e) two or more wheels for ease of movement of the work surface, wherein the wheel are attached directly to the frame structure or may be attached to a rod or a similar device welded onto or attached to the frame structure, and placing the one or more partitioning devices with the planar tabletop in a vertical orientation in the open space or the large area to transform or divide the open space or the large area, wherein the one or more partitioning devices may be linked to each other or to existing structures in the open space or the large area by one or more connectors. 
     In one aspect of the method disclosed hereinabove the open space or the large area comprises an office space, a laboratory, a warehouse, a classroom, a conference room, an arena and any combinations thereof. In another aspect the partitioning device transforms an office space into one or more cubicles, training rooms, conference rooms, and any combinations thereof. In yet another aspect the connectors comprise ropes, chains, tethers, and any combinations thereof. In another aspect the method further comprises a wheel locking mechanism for preventing movement of the partitioning device. 
     In one aspect the ridge or the groove in the first stationary support bar locks the tabletop at a 90° angle. In another aspect the first stationary support bar is a top edge of a planar surface. In yet another aspect the planar surface enables functioning of the partitioning device to transform the open space, divide the large area into one or more smaller areas or both. In a related aspect the planar surface comprises a material similar to the planar tabletop. In another aspect the tabletop comprises a white board, an easel, a project table, a partition board, or combinations and modifications thereof. In yet another aspect the partitioning device may be used as the project table, the white board, or the easel in the open space or the large area. In related aspects of the method the partitioning device is used as a project table when the tabletop is substantially horizontal or at a 0° angle and the partitioning device is used as white board or an easel when the tabletop is adjusted at an angle between 45° and 90°. In another aspect the drive system is a pneumatic, spring, electric or hydraulic drive system. 
     The present invention in one aspect describes an office space or a large area transformed or partitioned into one or more small areas or cubicles by the method disclosed herein. In another aspect. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       For a more complete understanding of the features and advantages of the present invention, reference is now made to the detailed description of the invention along with the accompanying figures and in which: 
         FIG. 1  is a schematic of the table-board-partition of the present invention with the tabletop substantially horizontal or at a 0° angle for use as a project board; 
         FIG. 2  is a schematic of the table-board-partition of the present invention with the tabletop pneumatically raised and substantially horizontal or at a 0° angle for use as a project board; 
         FIG. 3  is a schematic of the table-board-partition of the present invention with the tabletop pneumatically raised and adjusted at an angle for use as a white board or an easel; 
         FIG. 4  is a schematic of the table-board-partition of the present invention with the tabletop pneumatically raised and locked at a 90° angle for use as a partition or a whiteboard; 
         FIG. 5  is a representation of a large office space divided into one or more smaller areas using the table-board-partition of the present invention; 
         FIG. 6  is a representation of a large office space with multiple project tables comprising the table-board-partition of the present invention; and 
         FIG. 7  is a representation of a large office space divided into one or more smaller areas using the table-board-partition of the present invention. One or more project tables comprising the table-board-partition of the present invention are contained with the smaller areas. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     While the making and using of various embodiments of the present invention are discussed in detail below, it should be appreciated that the present invention provides many applicable inventive concepts that can be embodied in a wide variety of specific contexts. The specific embodiments discussed herein are merely illustrative of specific ways to make and use the invention and do not delimit the scope of the invention. 
     To facilitate the understanding of this invention, a number of terms are defined below. Terms defined herein have meanings as commonly understood by a person of ordinary skill in the areas relevant to the present invention. Terms such as “a”, “an” and “the” are not intended to refer to only a singular entity, but include the general class of which a specific example may be used for illustration. The terminology herein is used to describe specific embodiments of the invention, but their usage does not delimit the invention, except as outlined in the claims. 
     The instant invention relates to a transforming project table, white erase board, and office partition all-in-one powered by a pneumatic system. 
       FIG. 1  is a schematic of the table-board-partition  100  of the present invention. The table-board-partition comprises a generally planar tabletop defining a plane, wherein the table top comprises a work (top) surface  128 , a bottom surface (not shown), a front edge  138 , a back edge  140 , a left edge  136 , and a right edge  134 . A generally vertical support member disposed for a movement in a generally vertical direction, wherein a top portion of the vertical support member is attached to the right edge  134  and the left edge  136  of the tabletop by one or more pivot joints (not shown), wherein the vertical support member further comprises one or more supporting bars  108  and  110  extending along a length of the support member and attached to a bottom portion of the support member, wherein the bars are substantially parallel to each other and are capable of movement along the vertical direction concomitantly with a vertical movement of the support member. A pneumatic drive system or mechanism moves the vertical support member in the vertical direction. A generally vertical frame structure  102  and  104  for receiving the vertical support member, wherein the frame structure further comprises: (i) a first stationary support bar  126  attached to a top portion of the frame structure and extending along the length of the frame structure, wherein the bar comprises a ridge or a groove for receiving the front edge or the back edge of the planar tabletop, wherein the bar is substantially parallel to the one or more bars  108  and  110  of the support member, wherein the bar is parallel to the tabletop when the tabletop is horizontal at a 0° angle and is perpendicular to the tabletop when the tabletop is vertical at a 90° angle and (ii) a second stationary support bar  106  attached to a bottom portion of the frame structure, wherein the bar is substantially parallel to the first stationary support bar  126  and to the one or more bars ( 108  and  110 ) of the support member. The table-board-partition  100  further comprises four wheels ( 116 ,  118 ,  120  and  124 ) for ease of movement of the work surface, wherein the wheel are attached directly to the frame structure or may be attached to a rod ( 112  and  114 ) or a similar device welded onto or attached to the frame structure  102  and  104 . The tabletop  128  of the system  100  is substantially horizontal or at a 0° angle for use as a project board. In order for the table-board-partition  100  to function as a partition the area below the table delineated by components  102 ,  104 ,  106  on both sides comprises a planar surface made of a material that is the same or similar to the table top material (surface). These two surfaces (on both sides) of the planar surface are not drawn or shown on in  FIG. 1  in order to show the internal components. The first stationary support bar  126  is a top edge of the planar surface (not shown). The planar surface enables functioning of the work surface as a partition. The use of system  100  as a partition board is shown in  FIG. 5  (for e.g.  524 ). 
       FIG. 2  is a schematic of the table-board-partition  200  of the present invention comprising a generally planar tabletop defining a plane, wherein the table top comprises a work (top) surface  228 , a bottom surface (not shown), a front edge  238 , a back edge  240 , a left edge  236 , and a right edge  234 . A generally vertical support member ( 230  and  232 ) is disposed for a movement in a generally vertical direction, wherein a top portion of the vertical support member  230  is attached to the right edge  234  by a pivot joint  242  (only one joint is shown herein), wherein the vertical support member further comprises one or more supporting bars  208  and  210  extending along a length of the support member and attached to a bottom portion of the support member, wherein the bars are substantially parallel to each other and are capable of movement along the vertical direction concomitantly with a vertical movement of the support member. A pneumatic drive system or mechanism moves the vertical support member  230  and  232  in the vertical direction. A generally vertical frame structure  202  and  204  receives the vertical support member  232  and  230 , respectively wherein the frame structure  202  and  204  further comprises: (i) a first stationary support bar  226  attached to a top portion of the frame structure and extending along the length of the frame structure, wherein the bar comprises a ridge or a groove  244  for receiving the front edge or the back edge of the planar tabletop, wherein the bar is substantially parallel to the one or more bars  208  and  210  of the support member, wherein the bar  226  is parallel to the tabletop when the tabletop is horizontal at a 0° angle and is perpendicular to the tabletop when the tabletop is vertical at a 90° angle and (ii) a second stationary support bar  206  attached to a bottom portion of the frame structure, wherein the bar is substantially parallel to the first stationary support bar  226  and to the one or more bars ( 208  and  210 ) of the support member. The table-board-partition  200  further comprises four wheels ( 216 ,  218 ,  220  and  224 ) for ease of movement of the work surface, wherein the wheel are attached directly to the frame structure or may be attached to a rod ( 212  and  214 ) or a similar device welded onto or attached to the frame structure  204  and  202 . The tabletop  228  of the system  200  is pneumatically raised and is substantially horizontal or at a 0° angle for use as a project board. 
       FIG. 3  is a schematic of the table-board-partition  300  of the present invention comprising a generally planar tabletop defining a plane, wherein the table top comprises a work (top) surface  328 , a bottom surface (not shown), a front edge  338 , a back edge  340 , a left edge  336 , and a right edge  234 . A generally vertical support member ( 330  and  332 ) is disposed for a movement in a generally vertical direction, wherein a top portion of the vertical support member  330  is attached to the right edge  334  by a pivot joint  342  (only one joint is shown herein), wherein the vertical support member further comprises one or more supporting bars  308  and  310  extending along a length of the support member and attached to a bottom portion of the support member, wherein the bars are substantially parallel to each other and are capable of movement along the vertical direction concomitantly with a vertical movement of the support member. A pneumatic drive system or mechanism moves the vertical support member  330  and  332  in the vertical direction. A generally vertical frame structure  302  and  304  receives the vertical support member  332  and  330 , respectively wherein the frame structure  302  and  304  further comprises: (i) a first stationary support bar  326  attached to a top portion of the frame structure and extending along the length of the frame structure, wherein the bar comprises a ridge or a groove  344  for receiving the front edge or the back edge of the planar tabletop, wherein the bar is substantially parallel to the one or more bars  308  and  310  of the support member, wherein the bar  326  is parallel to the tabletop when the tabletop is horizontal at a 0° angle and is perpendicular to the tabletop when the tabletop is vertical at a 90° angle and (ii) a second stationary support bar  306  attached to a bottom portion of the frame structure, wherein the bar is substantially parallel to the first stationary support bar  326  and to the one or more bars ( 308  and  310 ) of the support member. The table-board-partition  300  further comprises four wheels ( 316 ,  318 ,  320  and  324 ) for ease of movement of the work surface, wherein the wheel are attached directly to the frame structure or may be attached to a rod ( 312  and  314 ) or a similar device welded onto or attached to the frame structure  304  and  302 . The tabletop  328  of the system  300  is pneumatically raised and adjusted at an angle for use as a white board or an easel. 
       FIG. 4  is a schematic of the table-board-partition  400  of the present invention comprising a generally planar tabletop defining a plane, wherein the table top comprises a work (top) surface  428 , a bottom surface (not shown), a front edge (not shown), a back edge  438 , a left edge  436 , and a right edge  434 . A generally vertical support member ( 430  and  432 ) is disposed for a movement in a generally vertical direction, wherein a top portion of the vertical support member  430  is attached to the right edge  434  by a pivot joint  440  (only one joint is shown herein), wherein the vertical support member further comprises one or more supporting bars  408  and  410  extending along a length of the support member and attached to a bottom portion of the support member, wherein the bars are substantially parallel to each other and are capable of movement along the vertical direction concomitantly with a vertical movement of the support member. A pneumatic drive system or mechanism moves the vertical support member  430  and  432  in the vertical direction. A generally vertical frame structure  402  and  404  receives the vertical support member  432  and  430 , respectively, wherein the frame structure  402  and  404  further comprises: (i) a first stationary support bar  426  attached to a top portion of the frame structure and extending along the length of the frame structure, wherein the bar comprises a ridge or a groove (not shown herein) that receives and locks the front edge of the planar tabletop  428  as shown herein. The bar  426  is substantially parallel to the one or more bars  408  and  410  of the support member, wherein the bar  426  is parallel to the tabletop when the tabletop is horizontal at a 0° angle and is perpendicular to the tabletop when the tabletop is vertical at a 90° angle and (ii) a second stationary support bar  406  attached to a bottom portion of the frame structure, wherein the bar is substantially parallel to the first stationary support bar  426  and to the one or more bars ( 408  and  410 ) of the support member. The table-board-partition  400  further comprises four wheels ( 416 ,  418 ,  420  and  424 ) for ease of movement of the work surface, wherein the wheel are attached directly to the frame structure or may be attached to a rod ( 412  and  414 ) or a similar device welded onto or attached to the frame structure  404  and  402 . The tabletop  428  of the system  400  is pneumatically raised and locked at a 90° angle for use as a partition or a whiteboard. 
       FIG. 5  is a representation of a large office space  500  divided into one or more smaller areas using the table-board-partition of the present invention. Office space  500  comprises a cubicle  510  and four smaller areas  502 ,  504 ,  506  and  508  that are created using the table-board partition of the present invention. There are two doors  556  and  558  for entry or exit from the office space  500 . White boards or glass windows  542 ,  544 ,  546 ,  548 ,  550 ,  552  and  554  line the walls of the office space  500 . Area  502  is a storage area for the table-board-partitions  542  for use in this and other areas of the office space. The area also has a door  560  for entry and exit into cubicle  510 . Area  502  is separated from area  508  by using the partition boards  528 ,  530 , and  532 . Rea  508  also comprises a shelf  540  and is separated from area  506  by use of three partition boards  534 ,  536 , and  538 . Areas  506  is designed to be a conference room and has a conference table  520  and is separated from area  504  by using boards  524  and  526 . Area  504  is a project room which comprises a project table  514  and a stool  518  and shelf  516 . Area  504  is separated from area  502 . Office space  500  has a central pillar designated as  512 . 
       FIG. 6  is a representation of a large office space  600  with multiple project tables comprising the table-board-partition of the present invention. Office space  600  has a cubicle  602  and a large area  604  comprising multiple project tables comprising the partition-table-board of the present invention. These are designated as  612 ,  614 ,  616 ,  618 ,  618 ,  620 ,  624 ,  626 ,  628 ,  630 ,  632 , and  634 . Each project table can seat up to four people and work stools are provided for this purpose (designated as a, b, c, and d for only project table  618  herein). There are two doors  656  and  658  for entry or exit from the office space  600  and a door  654  for entry and exit from cubicle  602  to the area  604 . There are two shelves  606  and  608  placed in the area  604 . White boards or glass windows  636 ,  638 ,  640 ,  644 ,  646 ,  648 , and  650  line the walls of the office space  600 . Office space  600  has a central pillar designated as  610 . 
       FIG. 7  is a representation of a large office space  700  divided into one or more smaller areas using the table-board-partition of the present invention. One or more project tables comprising the table-board-partition of the present invention are contained with the smaller areas. Office space  700  comprises a cubicle  702  and three areas one large  704 , and two smaller areas  706  and  708  that are created using the table-board partition of the present invention. There are two doors  742  and  744  for entry or exit from the office space  700 . White boards or glass windows  752 ,  754 ,  756 ,  758 ,  760 ,  762 , and  764  line the walls of the office space  700 . The area also has a door  746  for entry and exit into cubicle  702  from areas  704 . Area  704  is separated from areas  706  and  708  by using partition boards  528 ,  530 , and  722 ,  724 , and  726 , respectively arranges on either sides of the central pillar  710 . Area  704  comprises a shelf  748  and a work station  712  and two project tables  712  and  714 . Area  706  comprises a project table  716 , a chair  720 , a cabinet  762 , and a white board  764 . Area  708  comprises three project tables ( 718 ,  738 , and  740 ) and a shelf  750 . 
     It is contemplated that any embodiment discussed in this specification can be implemented with respect to any method, kit, reagent, or composition of the invention, and vice versa. Furthermore, compositions of the invention can be used to achieve methods of the invention. 
     It will be understood that particular embodiments described herein are shown by way of illustration and not as limitations of the invention. The principal features of this invention can be employed in various embodiments without departing from the scope of the invention. Those skilled in the art will recognize, or be able to ascertain using no more than routine experimentation, numerous equivalents to the specific procedures described herein. Such equivalents are considered to be within the scope of this invention and are covered by the claims. 
     All publications and patent applications mentioned in the specification are indicative of the level of skill of those skilled in the art to which this invention pertains. All publications and patent applications are herein incorporated by reference to the same extent as if each individual publication or patent application was specifically and individually indicated to be incorporated by reference. 
     The use of the word “a” or “an” when used in conjunction with the term “comprising” in the claims and/or the specification may mean “one,” but it is also consistent with the meaning of “one or more,” “at least one,” and “one or more than one.” The use of the term “or” in the claims is used to mean “and/or” unless explicitly indicated to refer to alternatives only or the alternatives are mutually exclusive, although the disclosure supports a definition that refers to only alternatives and “and/or.” Throughout this application, the term “about” is used to indicate that a value includes the inherent variation of error for the device, the method being employed to determine the value, or the variation that exists among the study subjects. 
     As used in this specification and claim(s), the words “comprising” (and any form of comprising, such as “comprise” and “comprises”), “having” (and any form of having, such as “have” and “has”), “including” (and any form of including, such as “includes” and “include”) or “containing” (and any form of containing, such as “contains” and “contain”) are inclusive or open-ended and do not exclude additional, unrecited elements or method steps. 
     All of the compositions and/or methods disclosed and claimed herein can be made and executed without undue experimentation in light of the present disclosure. While the compositions and methods of this invention have been described in terms of preferred embodiments, it will be apparent to those of skill in the art that variations may be applied to the compositions and/or methods and in the steps or in the sequence of steps of the method described herein without departing from the concept, spirit and scope of the invention. All such similar substitutes and modifications apparent to those skilled in the art are deemed to be within the spirit, scope and concept of the invention as defined by the appended claims. 
     REFERENCES 
     
         
         U.S. Pat. No. 5,313,892: Table with Height and Tilt Adjust. 
         U.S. Patent Application No. 20040123780: Portable Expandable Project Table.