Abstract:
Mechanisms for the integration of the form and function of a drafting and note-taking tablet, a laptop computer, and a desktop computer with added enhancements for drop protection, portability, functionality, and ergonomics.

Description:
CROSS-REFERENCES TO RELATED APPLICATIONS 
     This application claims the benefit U.S. Provisional Patent Application No. 61/813,893, filed Apr. 19, 2013, and U.S. Provisional Patent Application No. 61/878,491, filed Sep. 16, 2013, both of which applications are incorporated by reference in their entirety. 
    
    
     BACKGROUND OF THE INVENTION 
     The invention relates to integrated mechanical devices for the efficient positioning and use of tablet computers for optimal user input and viewing experience. More particularly, the example non-limiting technology herein relates to devices that are particularly suited for taking notes, drawing, typing, and viewing on tablet computers to make such devices vastly more usable, enjoyable, and crash resistant. 
     Since the introduction of the Apple iPad™ in April 2010, the number of computing devices known as computer tablets, or “tablets” has vastly increased. These devices typically consist of a touch screen that fronts a highly sophisticated, versatile, thin, and lightweight computer. 
     In some computing environments, for example, the display/tablet may have to be positioned to various angles and orientations with respect to the base (a resting surface) in order to eliminate glare or to enter data via a virtual, on-screen, keyboard. 
     Moreover, with the advent of the Samsung Galaxy Note 10.1™ tablet in early 2012 and the Microsoft Surface Pro™ tablet in early 2013—both of which incorporate a stylus—the display may not only need to be positioned to various angles and orientations with respect to the base, but it may also need to support the load and the pressure of a human hand pressing a stylus against the display surface of the tablet at multiple viewing and writing angles, both for ergonomic reasons and to eliminate distracting reflections or glare. In addition, the introduction of wireless keyboards that work seamlessly with tablet devices make it advantageous in certain computing environments not only to have a keyboard that can easily attach and detach from an accompanying tablet, but also to have that keyboard adjust in height so that a user&#39;s fingers do not overstretch when reaching the upper-rung characters of the keyboard. 
     Lastly, as camera lens attachments that can vastly enhance the capabilities of the built-in camera lenses of tablets and mobile phones are starting to appear on the market, a quick-release protective housing for tablets and mobile phones may vastly facilitate the mounting and un-mounting of such fitted lens attachments. 
     An analysis of a multitude of offerings from several manufacturers of tablets and tablet accessories revealed that the great majority of current tablet stands, folios, and covers provide either fixed or limited adjustability; typically resulting in either one or two display angles—and practically none currently offers a tablet stand, folio, or cover that is designed to withstand a sustainable load pressure of at least 1 lbs (one pound) and above at display angles ranging from about 5 degrees to about 15 degrees (with respect to a resting surface or base) which may be applied by users when using a stylus to draw or to write. A company that currently offers a display stand or a tablet accessory with more than two display angles is ZeroChroma, LLC (http://www.zerochroma.com) through their “Theater-Stand” smart cover for the iPhone™, iPad™, and iPod Touch™ (see US patent application numbers US Published Patent Applications 2010/0072334; 2011/0031287 and 2013/0134291) as well as through their new “Vario” stands for iPhones™ and iPads™. While the ZeroChroma, LLC designs provide multiple viewing angles that can effectively eliminate glare and provide an ergonomic viewing experience, they only provide for a single load bearing viewing angle that can support hand-writing with a stylus without potentially sliding the display during hand-writing. The ZeroChroma™ single load-bearing angle for the iPad 3™ and iPad 4™ is about 25 degree angle with respect to a resting surface or base and about 20 degree angle for the iPad Mini™—both angles well above the comfort zone for hand-writing and drawing for most people, which ranges, for most people, from about 5 degrees to about 15 degrees with respect to a resting surface or base. 
     In addition, even among the limited current crop of electronic tablet manufacturers that imbed a pen holster in their tablets, such as Samsung, HP, and NVIDIA, no electronic manufacturer currently provides the ability to attach and detach pen holsters for pens of various widths and sizes based on user preferences and application requirements—the need for which is demonstrated by the availability of the Samsung “S-Pen” holder kit—which is nothing more than a hollow enclosure that enables users to insert an electronic stylus into the shape of a traditional ink pen to give them more comfort and control when using their imbedded electronic stylus. Such holder kit, if used, would defeat the purpose of embedding a pen holster into Samsung&#39;s tablets. 
     Also, while several tablet manufacturers such as Sony and Microsoft provide a magnetically attached keyboard to their electronic tablets, analysis indicates that none currently provide a height adjustable keyboard with their offerings. 
     Finally, as camera lens attachments that can vastly enhance the capabilities of the built-in camera lenses of tablets and mobile phones are appearing on the market, a quick release mounting plate with bumper-style edge protection and a removable, but connected, top section for quick tablet insertion and retrieval would enable the quick mounting of camera lens attachments without the need to remove the tablet or mobile phone from its protective cover. In fact, when mounted on a mounting plate with built-in retractable supporting elements that can withstand pressure of 1 lb. and above at angular positions between about 5-degree angle and 45-degree angle, that is equipped with bumper-style edge protection, a pen attachment, and a magnetically attached wireless keyboard, a tablet device can easily transform into a drafting and note-taking tablet as well as to an enhanced-function laptop computer. 
     Therefore, a need exists for integrated, quick-release, tablet enclosures and mechanical devices that can transform the form and function of most electronic tablet devices to assume the roles of a drafting and note-taking tablet, a laptop computer, and a desktop computer, with added enhancements for drop protection, portability, functionality, and ergonomics. 
     BRIEF SUMMARY OF THE INVENTION 
     The inventions that have been conceived and are disclosed are integrated mechanical devices for the quick and efficient positioning and use of tablet computers for optimal user input and viewing experience enabling tablet computers to assume the form and function of a drafting and note-taking tablet, a laptop computer, and a desktop computer, with added enhancements for drop protection, portability, functionality, and ergonomics. 
     The invention may be embodied to include one or more of: 
     1. A slim, low profile, tablet holder for computer tablets which consists of a mounting plate with four contoured rubber bumpers on each corner of the mounting plate. The mounting plate consisting of a front surface, a rear surface, and a side wall extending between the front surface and the rear surface and includes at least one cavity and a retaining channel or pin used to retain a supporting element. The supporting element is movable between a retracted position and at least two extended positions relative to the body. The supporting element being disposed in the flush position within the body in its retracted position and extending from the body to provide orientation and support in its extended positions. The mounting plate is supplemented with four molded rubber brackets in close proximity to the contoured rubber bumpers for cradling tablet devices while leaving most of the side control areas of the devices as well as their entire frontal area unobstructed. 
     2. In another embodiment, the mounting plate is further augmented with a detachable electronic pen holder for holding an electronic stylus. 
     3. In another embodiment, the mounting plate is further augmented with a height adjustable detachable wireless magnetic keyboard. 
     4. In yet another embodiment, the mounting plate is split into two sections with bumper-style edge protection for quick tablet insertion and retrieval. 
     An invention has been conceived and is disclosed herein for an adjustable tablet support assembly comprising: a support panel seated in a slot or recess of a back panel of a tablet or tablet support plate, wherein the support panel has a width dimension narrower than a width of the slot; a hinge assembly connecting the support panel to the back panel, the hinge assembly including: at least one shaft extending from a first edge of the support panel and the at least one shaft extends at least the width of the slot; a disc with teeth; an aperture configured to receive the disc, wherein the aperture includes teeth configured to intermesh with the teeth of the disc while the disc is seated in the aperture, the disc and aperture are aligned with an axis of the at least one shaft; wherein the aperture or disc is fixed to the at least one shaft and the other of the disc or aperture is fixed to the support panel, and wherein a difference between the width of the support panel and the width of the slot is at least a thickness of the disc. 
     The support panel may slide along the plane of the back panel to insert and remove the disc from the aperture. The support panel may pivot about the at least one shaft from a first position parallel to the back panel to a second position at which the support panel forms an angle between five to sixty degrees with respect to the back panel. The seating of the disc in the aperture may lock the angular position of the support panel with respect to the back plate. The support panel may include a first edge aligned with an edge of the back panel, wherein the first edge is opposite to a second edge of the support panel aligned with the at least one shaft. The first edge of the support panel may be parallel to the at least one shaft. The at least one shaft is a single shaft extending the width of the slot and having an end opposite to the aperture which seats in a bearing slot in the back panel. The back panel may included a back plate mounted to a tablet computing device having a display screen on a panel opposite to the back plate. The disc with teeth may be one of a group consisting of a spur gear, ratchet wheel, a shaft end shaped as a hex (or Allen) wrench, a disc with pins or ridges (effectively teeth) extending from a front face of the disc, or other similar locking mechanisms. 
     An invention has been conceived and is disclosed here of a tablet holder comprising: a back panel including a first surface configured to face a back of a tablet display device and a second surface, opposite to the first surface including an attachment mechanism; a support panel seated in a slot or recess of the back panel, wherein the support panel has a width dimension narrower than a width of the slot; a hinge assembly connecting the support panel to the back panel, the hinge assembly including: at least one shaft extending from a first edge of the support panel and the at least one shaft extends at least the width of the slot; a disc with teeth extending around at least a portion of the circumference of the disc; an aperture configured to receive the disc, wherein the aperture includes teeth configured to intermesh with the teeth of the disc while the disc is seated in the aperture, the disc and aperture are aligned with an axis of the at least one shaft; wherein the aperture or disc is fixed to the at least one shaft and the other of the disc or aperture is fixed to the support panel, and wherein a difference between the width of the support panel and the width of the slot is at least a thickness of the disc. 
     The support panel may slide along the plane of the back surface to insert and remove the disc from the aperture, and pivot about the at least one shaft from a first position parallel to the back surface to a second position at which the support panel forms an angle between five to eighteen degrees with respect to the back panel. 
     A method has been conceived to support a tablet display or computing device on a generally horizontal surface wherein a support panel is pivotably attached to a back panel associated with the tablet display or computing device, the method comprising: moving a support panel seated in a slot or recess of the back panel, wherein the support panel has a width dimension narrower than a width of the slot and the movement moves the support panel in a first direction laterally in the slot to a pivot position; disengaging a locking key from a locking receptacle by the movement of the support panel, wherein the locking key and locking receptacle are aligned along an axis; while the support panel is in the pivot position, pivoting the support panel about the axis to form an angle between the support panel and the back surface in a range of five to sixty degrees; after pivoting the support panel and while the support panel is at the angle, moving the support panel in a second direction, opposite to the first direction, to engage the locking key with the locking receptacle, wherein the support panel is locked at the angle with respect to the back panel while the locking key is engaged with the locking receptacle, and while the support panel is locked at the angle, positioning an edge of the tablet display or computing device and an edge of the support panel on the generally horizontal surface. 
     The locking key may includes a disc with teeth on a periphery of the disc and the locking receptacle includes teeth configured to intermesh with the teeth on the disc, and the step of disengaging the locking key includes sliding the disc from the locking receptacle, and the step of engaging the locking key includes sliding the disc into the locking receptacle. 
     A holder has been conceived for a pointing device comprising: a holder housing including a sidewall extending around a receptacle configured to receive an end portion of the pointing device, wherein the holder housing includes an open end of the receptacle and a second end, opposite to the first end; a fastener configured to attach the holder housing to a tablet display or computing device; a resilient member within the holder housing and positioned proximate to the second end, wherein the resilient member is configured to deform at least a certain distance when an end of the pointing device is pushed into the holder and against the resilient member; a slot in the sidewall including a first slot section having an open end at the open end of the holder housing and a distal section, a second slot section offset from the first slot section and having a closed end in the sidewall for the holder housing, a bridge slot connecting the distal section of the first slot and an entrance to the second slot, wherein the slot in the sidewall is configured to receive a locking post on a side of the pointing device, wherein the locking post slides through the first slot section, across the bridge slot section and is retained in the second slot section. The slot may have a J-shape wherein the first slot section represents a long section of the J-shape, and the bridge slot section and the second slot section together represent a hook portion the J-shape. The holder housing may be positioned along and parallel to an edge of the tablet display or computing device. 
     A casing has been conceived and is disclosed herein for a tablet display or computing device comprising: a main back casing including a main back panel having sidewalls at three of four edges of the back panel and a fourth edge; a secondary back casing including a secondary back panel and sidewalls at three of four edges of the secondary back panel and a forth edge of the secondary back panel configured to abut the fourth edge of the main back panel; a slot in the main back panel or the secondary back panel, the slot including opposite sides and each side including a groove; a tongue panel extending from the fourth edge of the secondary back panel or main back panel and the tongue panel configured to seat in the slot, wherein the tongue panel includes sides each adjacent one of the opposite sides of the slot, and pins on each of the sides of the panel configured to slidably engage the grooves, wherein the pins are aligned along an axis parallel to the fourth edge, wherein the tongue panel has a first position seated in the slot and in a plane of both of the main and secondary back panels, and a second position in which the tongue panel is pivoted about the pins. 
     A back panel assembly has been conceived and is disclosed herein for a tablet display or computing device comprising: a back panel including apertures at each of four corner positions, wherein the dimensions of the corner positions correspond to dimensions of the corners of the tablet display or computing device; annular bushings in each of the apertures; a corner brace for each of the corner positions, the corner brace including an inside surface configured to receive one of the corners of the tablet display or tablet computing device and the corner brace formed of a deformable material; a post on a first surface of each corner brace, wherein the post is configured to be inserted into a first of the annular bushing in one of the apertures; a threaded aperture in each corner brace having an open end at the first surface and configured to align with a second of the annular bushings in another one of the apertures, and a fastener for each corner brace and including a shaft with threads configured to engage the threaded aperture in the corner brace, wherein the fastener includes a head attached to the corner brace which abuts the back panel while the fastener is in the threaded aperture to hold the back panel to the tablet display or computer device. 
    
    
     
       BRIEF DESCRIPTION OF THE FIGURES 
       The figures show embodiments of the invention disclosed and claimed in this application. The figures are: 
         FIG. 1  illustrates a perspective view of an embodiment of a combined tablet holder and a detachable pen with the height adjustable detachable wireless magnetic keyboard used as protective cover. 
         FIG. 2  illustrates a perspective view of a tablet mounted on the tablet holder illustrated in  FIG. 1  against a fixed surface with one of its supporting elements in a deployed configuration. Such a configuration is useful for example where one wants to draw or handwrite on the tablet in the landscape orientation. 
         FIG. 3  illustrates a perspective view of a tablet mounted on the tablet holder illustrated in  FIG. 1  against a fixed surface with one of its supporting elements in a deployed configuration with the detachable keyboard in front of it. Such a configuration is useful for example where one wants to type a letter in the portrait configuration. 
         FIG. 4  illustrates a two-dimensional side view of the tablet holder and the detachable keyboard illustrated in  FIG. 3 . 
         FIG. 5  illustrates a rear perspective view of a tablet mounted on a tablet holder against a fixed surface with one of its supporting elements extended to orient the tablet in the portrait orientation, with a penholder attached. 
         FIG. 6  illustrates a front perspective view of a tablet mounted on a tablet holder against a fixed surface with one of its supporting elements extended to orient the tablet in the portrait orientation, with a penholder attached. 
         FIG. 7  illustrates a side view of the tablet holder illustrated in  FIG. 6 . 
         FIG. 8  illustrates a rear perspective view of a tablet mounted on a tablet holder and detachable keyboard illustrated against a fixed surface with the supporting element extended to support the tablet in landscape orientation. 
         FIG. 9  illustrates a side view of a person using a tablet mounted on a tablet holder and detachable keyboard against a fixed surface area. Such a configuration is useful for example where one wants to use the tablet like a desktop computer. 
         FIG. 10  illustrates an alternative embodiment of a tablet mounted on a tablet holder with the detachable keyboard folded under the tablet holder in an alternative configuration. Such a configuration is useful for example when one wants to use the tablet holder on one&#39;s own lap. 
         FIG. 11  illustrates a side view of the tablet holder and the detachable keyboard illustrated in  FIG. 10 . 
         FIG. 12-17  illustrate an image sequence of how the detachable wireless magnetic keyboard consisting of a keyboard and three magnetized swiveling strips can be positioned as a protective cover for the tablet holder. 
         FIG. 18  illustrates a perspective view of an alternative embodiment of a combined tablet holder and detachable pen with a flat detachable wireless magnetic keyboard used as a protective cover. In this embodiment, the mounting plate is split into two sections with bumper-style edge protection for quick tablet insertion and retrieval. 
         FIG. 19  illustrates an alternative view of  FIG. 18  with the flat magnetic keyboard detached from the tablet holder. 
         FIG. 20  illustrates a rear perspective view of the split tablet holder with one of its supporting elements extended to orient the tablet in the portrait orientation. 
         FIG. 21  illustrates a rear perspective view of the split mounting plate embodiment of the tablet holder with one of its supporting elements extended to orient the tablet in the landscape orientation with the detachable keyboard positioned in front of it in a desktop-like manner. 
         FIG. 22  illustrates a rear perspective view of the split mounting plate embodiment of the tablet holder with a user&#39;s fingers positioned in the finger depressions of the top plate, ready to separate the top section of the mounting plate from its bottom section. 
         FIG. 23  illustrates a partial rear perspective view of the split mounting plate embodiment of the tablet holder with a user&#39;s fingers in the finger depressions of the top section of the mounting plate after having separated the top section of the mounting plate from the bottom section of the mounting plate. 
         FIG. 24  illustrates a partial rear perspective view of the split mounting plate embodiment of the tablet holder with the top plate separated, but still attached, to the bottom plate. 
         FIG. 25-32  illustrate an image sequence of how a tablet can be quickly released from a split mounting plate embodiment of the tablet holder. 
         FIG. 33  illustrates a three-dimensional perspective of an exploded view representation of how an example non limiting spur gear connected to a cylindrical shaft can mesh with an internal gear. 
         FIG. 34  illustrates a cross-sectional two-dimensional representation of how an example non-limiting spur gear connected to a cylindrical shaft can mesh with an internal gear to fix the angular/rotational position of the shaft. 
         FIG. 35  illustrates a cross-sectional two-dimensional representation of how an example non-limiting spur gear connected to a cylindrical shaft can mesh (or engage) with a partial internal gear imbedded in the side wall extending between the front surface and the rear surface of a fixed plate in order to fix the angular rotational position of the shaft. 
         FIG. 36-39  illustrate a three-dimensional perspective view of several example non-limiting notched, grooved, and pinned plates and cylinders made up of diametrically inverse groves, notches, and holes that may be meshed together to fix the rotational position of a shaft. 
         FIG. 40A-40F  show an example flip chart animation of how the rotational position of an example non-limiting plate, or supporting element, attached to cylindrical shaft or pin fastened to an example non-limiting spur gear can be locked, unlocked, rotated, and relocked when inserted into and extracted from a partial internal gear imbedded in the side wall extending between the front surface and the rear surface of a fixed plate. 
         FIG. 41  illustrates a three-dimensional perspective view showing how interchanging the location of the gears of  FIG. 40A-40F  by fixing the position of the spur gear while making the internal gear rotatable will have the same locking and unlocking effect on the example non-limiting rotatable plate, or supporting element, illustrated in  FIG. 40A-40F . 
         FIG. 42  illustrates a two-dimensional representation wherein a supporting element is in the unlocked flush position with a tablet holder mounting plate. 
         FIG. 42A  shows additional details of the  FIG. 42  detailing an unlocked position of the geared end configuration of the pin that engages with a channeled opening within the tablet holder mounting plate wall. 
         FIG. 43  illustrates a two-dimensional representation wherein a supporting element is in the locked flush position with a tablet holder mounting plate. 
         FIG. 43A  shows additional details of the  FIG. 43  detailing a locked position of the geared end configuration of the pin that engages with a channeled opening within the tablet holder mounting plate wall. 
         FIG. 44  shows a perspective view of an exemplary embodiment wherein a supporting element is built into a tablet holder mounting plate. The supporting element is deployed in a configuration that is useful for example where one wants to handwrite on a tablet in the portrait orientation. 
         FIG. 45  shows a perspective view of an exemplary embodiment wherein a supporting element is built into a tablet holder mounting plate. The supporting element is deployed in a configuration that is useful for example where one wants to draw on a tablet in the landscape orientation. 
         FIG. 46  illustrates a close-up three-dimensional embodiment of the front plate of a mounting plate supporting element in an extended position, with special emphasis on the shape of the ledges of the supporting element. 
         FIG. 47  illustrates a close-up three-dimensional embodiment of the back plate of a mounting plate supporting element and how it interacts with the ledges of the backside of the mounting plate in order to close the gap that results on either side of the supporting element when it is moved side to side to lock and unlock the rotational position of a tablet holder mounting plate. 
         FIGS. 48 and 48A-48B  show how a supporting element can be coupled to a tablet holder mounting plate. 
         FIGS. 49-50 and 49A-50A  illustrate a close-up cross-section of how a supporting element can be coupled to a tablet holder mounting plate. 
         FIGS. 51-57, 51A-57A, and 51B-52B  show an example three-dimensional perspective flip chart animation of how a supporting element can be moved from side to side to lock, unlock, rotate, and relock it with respect to a tablet holder mounting plate. 
         FIG. 58A-58B  show a detail of how a supporting element can be moved from side to side within a channelized opening in the back of the tablet holder mounting plate by engaging and disengaging a geared shaft molded into the supporting element from side to side. 
         FIG. 59  illustrates a partial three-dimensional embodiment of  FIG. 58A  above 
         FIG. 60A-60B  show a detail of how a geared supporting element can be moved from side to side within a channelized opening in the back of the tablet holder mounting plate by sliding over a pin. The pin may be spring loaded in the same manner a wristwatch spring pin is spring loaded. 
         FIG. 61  illustrates a partial three-dimensional embodiment of  FIG. 70A  above 
         FIG. 62  illustrates a three-dimensional perspective exploded view of the components of the tablet holder mounting plate and how they fit together. 
         FIG. 63  illustrates a three-dimensional perspective view of the components of the tablet holder mounting plate and how they secure a tablet to the mounting plate. 
         FIG. 64  illustrates a three-dimensional bottom perspective view of how a molded rubber bracket is secured to a tablet holder mounting plate. 
         FIG. 65  illustrates a two-dimensional side view of  FIG. 64 . 
         FIG. 66  illustrates a cross-sectional two-dimensional representation of  FIG. 64 . 
         FIG. 67A-67D  illustrates an image sequence where an electronic pen is secured into a detachable stylus holder. 
         FIG. 68A-68B  illustrates an image sequence where the detachable stylus holder is attached to the side section of the mounting plate. 
         FIG. 69  illustrates a perspective view of an embodiment of a tablet holder with an attached electronic pen. 
         FIG. 70  illustrates a perspective view of an embodiment of a wireless magnetic detachable keyboard. 
         FIG. 71  illustrates a perspective view of an alternative embodiment of a wireless magnetic detachable keyboard. 
         FIG. 72A-72D  illustrate an image sequence of how the detachable keyboard elements can be flexed to set the keyboard at a raised incline. 
         FIG. 73A-73B  illustrate two-dimensional side views of alternative embodiments of a raised wireless magnetic detachable keyboard. 
         FIG. 74  illustrates a perspective view of an embodiment of a combined tablet holder and detachable pen with the height adjustable detachable wireless magnetic keyboard used as protective cover. 
         FIG. 75  illustrates a perspective view of an embodiment of a tablet holder where the mounting plate is split into two sections with bumper-style edge protection for quick tablet insertion and retrieval. 
         FIG. 76  illustrates a rear perspective view of an embodiment of a split mounting plate tablet holder. 
         FIGS. 77 and 78  show an image sequence of a split mounting plate tablet holder where the top section is being removed. 
         FIG. 79  illustrates a rear perspective view of the components of a split mounting plate tablet holder. 
         FIG. 80  illustrates a perspective view of the components of a split mounting plate tablet holder. 
         FIG. 81  illustrates a two dimensional cross section of the attachment mechanism of a split mounting plate tablet holder with the top section in an unlocked and open position. 
         FIG. 82  illustrates a two dimensional cross section of the attachment mechanism of a split mounting plate tablet holder with the top section in the locked position. 
         FIG. 83  illustrates a perspective view of a split plate tablet holder with bumper-style edge protection. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     The embodiments of the invention disclosed herein are directed to tablet optimizing mechanical devices for providing multiple adjustable angular hand-writing support in both portrait and landscape orientations for a more natural note-taking and drafting experience, multiple adjustable viewing angles in both portrait and landscape orientations for a more comfortable viewing experience, a detachable inclined keyboard for a more ergonomic typing experience, a secure removable pen attachment for maximum drafting and note-taking convenience, robust padding for maximum crash protection, and a quick release mounting plate with bumper-style edge protection for quick tablet insertion and retrieval. 
       FIG. 1 - FIG. 32 : Represent various embodiments of the invention. 
       FIG. 33 - FIG. 61 : Represent various embodiments of the workings and implementation of an adjustable multiple viewing and hand-writing support mechanism for tablet computers. 
       FIG. 62 - FIG. 66 : Represent various embodiments of the workings and implementation of a drop resistant tablet holding brackets mechanism. 
       FIG. 67A - FIG. 69 : Represent various embodiments of the workings and implementation of a detachable stylus mechanism. 
       FIG. 70 - FIG. 74 : Represent various embodiments of the workings and implementation of a height adjustable detachable wireless magnetic keyboard mechanism. 
       FIG. 75 - FIG. 83 : Represent various embodiments of the workings and implementation of a quick-release mounting plate mechanism. 
     DETAILED DESCRIPTION 
     The following figures illustrate the mechanics of exemplary devices. The displayed embodiments are shown for exemplary purposes, the various parts shown in the provided illustrations, such as gears, shafts, hinges, openings, springs, buttons, and plates can have various shapes and sizes to fit the desired form and function of the device in which they are integrated. 
       FIG. 1  illustrates a perspective view of an embodiment of a combined tablet holder  100  and a detachable pen  200  with a height adjustable detachable wireless magnetic keyboard  300  used as protective cover. 
       FIG. 2  illustrates a perspective view of a tablet  110  mounted on the tablet holder  100  illustrated in  FIG. 1  against a fixed surface  101  with one of its supporting elements  125 A in a deployed configuration. Such a configuration is useful for example where one wants to draw or handwrite on the tablet in the landscape orientation. 
       FIG. 3  illustrates a perspective view of a tablet  110  mounted on the tablet holder  100  illustrated in  FIG. 1  against a fixed surface  101  with one of its supporting elements in a deployed configuration with the detachable keyboard  300  in front of it. Such a configuration is useful for example where one wants to type a letter in the portrait configuration. 
       FIG. 4  illustrates a two-dimensional side view of the tablet holder  100  and the detachable keyboard  300  illustrated in  FIG. 3 . 
       FIGS. 1 to 4  show that the tablet holder  100  may be configured as an adjustable multiple viewing and hand-writing support mechanism for a tablet computer. 
     One example non-limiting embodiment of a mechanism for orienting the tablet computer at a desired display angle are the load bearing rotation lock mechanisms shown in  FIGS. 33 to 61  for fixing the angular position of a tablet holding mounting plate or device at sustainable loads of one pound (1 lb.) and above at display angles ranging from about 5 degrees to about 60 degrees. 
       FIG. 5  illustrates a rear perspective view of a tablet  110  mounted on a tablet holder  100  against a fixed surface  101  with one of its supporting elements  125 B extended to orient the tablet in the portrait orientation, with a penholder  200  attached. 
       FIG. 6  illustrates a perspective view of a tablet  110  mounted on a tablet holder  100  against a fixed surface  101  with one of its supporting elements extended to orient the tablet in the portrait orientation, with a penholder  200  attached. 
       FIG. 7  illustrates a side view of the tablet holder  100  illustrated in  FIG. 6 . 
       FIG. 8  illustrates a rear perspective view of a tablet  110  mounted on a tablet holder  100  and a detachable keyboard  300  illustrated against a fixed surface  101  with the supporting element  125 A extended to support the tablet  110  in landscape orientation. 
       FIG. 9  illustrates a side view of a person using a tablet  110  mounted on a tablet holder  100  and detachable keyboard  300  against a fixed surface area  101 . Such a configuration is useful for example where one wants to use the tablet like a more ergonomic laptop, or a desktop. 
       FIG. 10  illustrates an alternative embodiment of a tablet  110  mounted on a tablet holder  100  with the detachable keyboard  300  folded under the tablet holder in an alternative configuration. Such a configuration is useful for example when one wants to use the tablet holder on one&#39;s own lap. 
       FIG. 11  illustrates a side view of the tablet holder  100  and the detachable keyboard  300  illustrated in  FIG. 10 . 
       FIG. 12-17  illustrate how the detachable wireless magnetic keyboard  300  consisting of a flat keyboard  301  and three attached magnetized swiveling strips  305 , 310 ,  315  can be positioned around a tablet mounting plate  105  to serve as a protective cover for the tablet holder  100 . 
       FIG. 18  illustrates a perspective view of, an alternative, split tablet holder  400  and detachable pen  200  with a flat detachable wireless magnetic keyboard  450  used as protective cover. In this embodiment, the mounting plate  400  is split into two sections  420  &amp;  430  with bumper-style edge protection for quick tablet insertion and retrieval. 
       FIG. 19  illustrates an alternative view of  FIG. 18  with the flat magnetic keyboard  450  detached from the split tablet holder  400 . The flat magnetic keyboard  450  may be secured to the split tablet holder  400  through magnets located on each corner of its keyboard  417 A,  417 B,  417 C, and  417 D as well as on its contoured bumper  416 A,  416 B,  416 C, and  416 D. This figure also illustrates the locations of supporting elements  475 A and  476 B which may be deployed in an extended position through finger depressions  476 A and  476 B. 
       FIG. 20  illustrates a rear perspective view of the split tablet holder  400  with one of its supporting elements  475 B extended to orient the tablet in the portrait orientation. 
       FIG. 21  illustrates a rear perspective view of the split mounting plate embodiment  400  of the tablet holder with one of its supporting elements  475 A extended to orient the tablet in the landscape orientation with the detachable keyboard  450  positioned in front of it in a desktop-like manner. 
       FIG. 22  illustrates a rear perspective view of the split mounting plate embodiment of the tablet holder  400  with a user&#39;s fingers positioned in the finger depressions  436 A &amp;  436 B of the top plate  430 , ready to separate the top section  430  of the split mounting plate from its bottom section  420 . 
       FIG. 23  illustrates a partial rear perspective view of the split mounting plate embodiment of the tablet holder  400  with a user&#39;s fingers in the finger depressions  436 A &amp;  436 B of the top section  430  of the mounting plate  400  after having separated the top section  430  of the mounting plate from the bottom section  420  of the mounting plate. 
       FIG. 24  illustrates a partial rear perspective view of the split mounting plate embodiment of the tablet holder  400  with the top plate  430  separated, but still attached, to the bottom plate  420 . 
       FIG. 25-32  illustrate an image sequence of how a tablet  110  can be quickly released from a split mounting plate embodiment of the tablet holder  400 . 
     The following illustrations represent various embodiments of the workings and implementation of an adjustable multiple viewing and hand-writing support mechanism for tablet computers. 
     One example non-limiting embodiment of such a mechanism is a load bearing rotation lock mechanism for fixing the angular position of a tablet holding mounting plate or device at sustainable loads of 1 lb. and above at display angles ranging from about 5 degrees to about 60 degrees (with respect to a resting surface or base) which may be applied by users when using a stylus to draw or to write. 
     Such device consisting of a hinge pin made up of a shaft fastened to a fixed notched, grooved, or pinned disk, cylinder, or gear. The shaft is molded to, or otherwise bonded, to a hinge plate or tablet supporting mechanism. As the shaft rotates, the hinge plate or tablet supporting mechanism that is connected to the shaft rotates. 
     When the end of the shaft that is fastened to a fixed notched, grooved, or pinned disk is thrust towards a stationary disk or cylinder that is made up of diametrically inverse groves, notches, or holes, the two disks or cylinders come in contact with each other and interlock preventing the shaft and its associated hinge plate, or tablet supporting mechanism, from moving or turning one relative to the other. 
     If on the other hand, the hinge pin is fastened to a gear (typically a spur gear), then instead of being pushed into an opposing disk, the hinge pin would be inserted into an internal gear that is the inverse of the fastened spur gear in such a way that when the two gears come in contact with one another, they interlock and prevent the shaft and its associated hinge plate, or tablet supporting mechanism, from moving or turning one relative to another. The term spur gear is used broadly to mean a rotational locking mechanism. For example, the spur gear and gear receptacle may be embodied as a ratchet and tooth, a shaft with a hex end wrench and a hexed hole to receive the end of the shaft, a disc with teeth on its periphery that mesh with teeth on an inside surface of a receptacle, and other similar mechanisms. 
     The locations of the spur gear and the internal gear are interchangeable for the purpose of locking the rotation of the above described hinge pin; the internal gear may be mounted on the rotating plate and thrust towards an inverse stationary spur gear to fix the rotation of the hinge pin. 
     The shaft of the hinge pin and the hinge plate, or tablet supporting mechanism, may be fused or separate. When the shaft of the pin and the hinge plate, or tablet supporting mechanism are fused, then the combination of the hinge pin and the fused hinge plate are thrust towards the fixed notched, grooved, or pinned disk, cylinder, or gear in a grooved channel. When the shaft of the pin and the hinge plate, or tablet supporting mechanism, are independent of each other such as when the shaft of the pin may be spring loaded in the same manner a wristwatch spring is spring loaded, the hinge plate can be moved from side to side to lock it and unlock it by sliding it over the shaft of the pin. 
     These and other features and advantages would be better and more completely understood by referring to the following detailed description of exemplary non-limiting illustrative embodiments in conjunction with the drawings of which: 
       FIG. 33  is a three-dimensional perspective of an exploded view representation of how an example non limiting spur gear  810  connected to a rotating cylindrical shaft  815  can mesh with a fixed or stationary internal gear  805  to lock the angular position of the rotating shaft. 
       FIG. 34  illustrates a cross-sectional two-dimensional representation of how an example non-limiting spur gear  810  connected to a cylindrical shaft  815  can mesh with an internal gear  805  to fix the angular/rotational position of the shaft. 
       FIG. 35  illustrates a cross-sectional two-dimensional representation of how an example non-limiting spur gear  810  connected to a cylindrical shaft  815  can mesh with a partial internal gear  820  imbedded in the side wall extending between the front surface and the rear surface of a fixed plate in order to fix the angular rotational position of the shaft. 
       FIG. 36-39  illustrate a three-dimensional perspective view of several example non-limiting notched, grooved, and pinned plates and cylinders made up of diametrically inverse groves, notches, and holes that may be meshed together to fix the rotational position of a shaft. 
       FIG. 40A-40F  show an example flip chart animation of how the rotational position of an example non-limiting plate, or supporting element  825 , attached to cylindrical shaft or pin  815  fastened to an example non-limiting spur gear  810  can be locked, unlocked, rotated, and relocked when inserted into and extracted from a partial internal gear  830  imbedded in the side wall extending between the front surface and the rear surface of a fixed plate. 
       FIG. 41  illustrates a three-dimensional perspective view showing how interchanging the location of the gears of  FIG. 40A-40F  by fixing the position of the spur gear  810  while making the internal gear  830  rotatable will have the same locking and unlocking effect on the example non-limiting rotatable plate, or supporting element, illustrated in  FIG. 40A-40F . 
       FIG. 42  illustrates a two-dimensional representation wherein a supporting element  825  is in the unlocked flush position with a tablet holder mounting plate  840 . 
       FIG. 42A  shows additional details of the  FIG. 42  detailing an unlocked position of the geared end  810  configuration of the pin  815  that engages with a channeled opening  860 A within the tablet holder mounting plate wall  840 . 
       FIG. 43  illustrates a two-dimensional representation wherein a supporting element  825  is in the locked flush position with a tablet holder mounting plate  840 . 
       FIG. 43A  shows additional details of the  FIG. 43  detailing a locked position of the geared end  810  configuration of the pin  815  that engages with a channeled opening  860 A within the tablet holder mounting plate wall  840 . 
       FIG. 44  shows a perspective view of an exemplary embodiment wherein supporting elements  125 A and  125 B are built into a tablet holder mounting plate  105  with a front surface  111 , a rear surface  113 , and a side wall extending between the front surface and the rear surface  115 . The mounting plate includes two cavities  128 A and  128 B used to contain supporting elements  125 A &amp;  125 B. The supporting element  125 B is deployed in a configuration that is useful for example where one wants to handwrite on a tablet in the portrait orientation. 
       FIG. 45  shows a perspective view of an exemplary embodiment wherein supporting elements  125 A and  125 B are built into a tablet holder mounting plate  105 . The supporting element  125 A is deployed in a configuration that is useful for example where one wants to draw on a tablet in the landscape orientation. 
       FIG. 46  illustrates a close-up three-dimensional embodiment of the front plate  124  of a mounting plate supporting element  125 A in an extended position, with special emphasis on the shape of the ledges  126 A and  127 A of the supporting element. 
       FIG. 47  illustrates a close-up three-dimensional embodiment of the rear plate  113  of a mounting plate supporting element  125 A and how it interacts with the ledges of the backside of the mounting plate  127 B in order to close the gap  128 B that results on either side of the supporting element  125 A when it is moved side to side to lock and unlock the rotational position of a tablet holder mounting plate  105 . 
       FIGS. 48 and 48A-48B  show how a supporting element  125 A can be coupled to a tablet holder mounting plate  105  by inserting the first end  179 A and the second end  179 B of the geared hinge pin  179  of the supporting element  125 A into the first end  169 A and the second end  169 B of the grooved channel  170  of a tablet mounting plate  105 . 
       FIGS. 49-50 and 49A-50A  illustrate a close-up cross-section of how a supporting element  125 A can be coupled to a tablet holder mounting plate  105  as described above. 
       FIGS. 51-57, 51A-57A, and 51B-52B  show a three-dimensional perspective image sequence of how a supporting element  125 A can be moved from side to side to lock, unlock, rotate, and relock it with respect to a tablet holder mounting plate  105 . 
       FIG. 58A-58B  show a detail of how a supporting element  825  can be moved from side to side within a channelized opening  860 A &amp;  860 B in the back of the tablet holder mounting plate  840  by engaging and disengaging the first end  815  and the second end  816  of a geared shaft fused into the supporting element  825  from side to side of the tablet holder mounting plate  840 . 
       FIG. 59  illustrates a partial three-dimensional embodiment of  FIG. 58A  above. 
       FIG. 60A-60B  show a detail of how a geared supporting element  825  can be moved from side to side within a channelized opening  860  in the back of the tablet holder mounting plate  840  by sliding over a pin  815 . The pin  815  may be spring loaded in the same manner a wristwatch spring pin is spring loaded. 
       FIG. 61  illustrates a partial three-dimensional embodiment of  FIG. 60A  above. 
     The following illustrations represent embodiments of the workings and implementation of a drop resistant tablet holding brackets mechanism: 
       FIG. 62  illustrates a three-dimensional exploded view representation of the example non-limiting tablet holder  100  showing how the individual components fit together to hold a tablet to a mounting plate. In particular, this illustration displays how the mounting plate  105  provides a tablet  110  double protection from knocks and drops through the use of four contoured rubber bumpers  150 A,  150 B,  150 C, and  150 D which are positioned at very close proximity to four molded rubber brackets  155 A,  155 B,  155 C, and  155 D located at the corner of the mounting plate  105 . The contoured rubber bumpers  150 A,  150 B,  150 C, and  150 D secure the tablet  110  to the mounting plate  105  with the help of four threaded screws  165 A,  165 B,  165 C, and  165 D which pass through four drilled holes  154 A,  154 B,  154 C, and  154 D on the chassis of the mounting plate  105 . The illustration also shows how a detachable pen holder  200  with a threaded screw can be attached to and detached from the side wall of the mounting plate  113  through a threaded hole  107 . 
       FIG. 63  illustrates a three-dimensional perspective view of the components of the tablet holder mounting plate  105  and how they secure a tablet  110  to the mounting plate  105  through the use of the contoured rubber bumpers  150 A,  150 B,  150 C, and  150 D. 
       FIG. 64  illustrates a three-dimensional bottom perspective view of how a contoured rubber bumper  150  secures a tablet  110  to a mounting plate  105  and provides robust protection against knocks and drops. Each rubber bumper is secured to a mounting plate through three built-in rubberized protruding elements  184 ,  186 , and  187  that can be inserted into corresponding holes  154 ,  156 , and  157  on the chassis of the mounting plate. Protruding elements  186  and  187  consist of rubberized cylinders, while the center protruding element  184  is a hollowed cylinder with a threaded core through which passes a threaded screw  165  that fastens the contoured rubber bumper  150  to the mounting plate  105 . Each protruding rubber element  186 ,  187 , and  184  is further enhanced with a corresponding built-in rubberized flat ring  196 ,  197 , and  194  located a short distance from the base  199  of the contoured rubber bumper  150 . The built-in rubberized rings are used to dampen the impact of a crash if the mounting plate  100  is knocked or dropped. Protruding rubberized elements  186  and  187  are used to stabilize the orientation of the contoured rubber bumper  150 . 
       FIG. 65  illustrates a two-dimensional side view of  FIG. 64 . 
       FIG. 66  illustrates a cross-sectional two-dimensional representation of  FIG. 64  showing how the rubberized rings  194 ,  196 , and  197  at the bottom of a contoured rubber bumper  150  are used to dampen the impact of a knock or a crash on a tablet holder  100  secured by contoured rubber bumpers  150 . 
     The following illustrations represent various embodiments of the workings and implementation of a detachable stylus mechanism: 
       FIG. 67A-67D  illustrate an image sequence where an electronic pen  205  is secured into a detachable stylus holder  215 . The pen attachment mechanism relies on inserting a short protruding element  210  attached to an electronic stylus  205  into a “J” shaped groove on a spring loaded cap for a detachable stylus mechanism  215  and twisting the electronic pen in a way that secures the stylus in the cap by positioning the short protruding element  210  at the tip of the short end of the “J” groove and securing it in place through pressure provided by a spring, or a material with spring-like properties  225  located at the tip of the pen cap enclosure. 
       FIG. 68A-68B  illustrate an image sequence where the detachable stylus holder  220  is attached to the side wall  115  of the mounting plate  105  through a threaded protrusion  108  that screws into a threaded hole  107  on the side wall  115  of the mounting plate  105 . 
       FIG. 69  illustrates a perspective view of an embodiment of a tablet  110  mounted on a tablet holder  100  fitted with a detachable stylus mechanism  200 . 
     The following illustrations represent various embodiments of the workings and implementation of a height adjustable detachable wireless magnetic keyboard mechanism: 
       FIG. 70  illustrates a perspective view of an embodiment of a height adjustable wireless magnetic detachable keyboard mechanism  300 . The mechanism consists of a keyboard plate  301  with four molded rubber brackets  340 A,  340 B,  340 C, and  340 D, supplemented by three hinged magnetized strips  305 ,  310  and  315  that can swivel around rubberized flexible joints  320 ,  325 , and  330  or around pins which may be spring loaded in the same manner a wristwatch spring is spring loaded. The keyboard plate may be magnetized near rubber brackets  340 A and  340 B to enable to keyboard to attach to corresponding magnetized tips at the top of the molded rubber brackets located at the corner of a tablet holder mounting plate. 
       FIG. 71  illustrates a perspective view of an alternative embodiment of the wireless magnetic detachable keyboard illustrated in  FIG. 70 . 
       FIG. 72A-72D  illustrate an image sequence of how the detachable keyboard elements  305 ,  310 , and  315  can be flexed to set the keyboard plate  301  at a raised incline. 
       FIG. 73A-73B  illustrate two-dimensional side views of alternative embodiments of a raised wireless magnetic detachable keyboard. 
       FIG. 74  illustrates a perspective view of an embodiment of a combined tablet holder  100  and detachable stylus mechanism  200  with the height adjustable detachable wireless magnetic keyboard mechanism  300  used as protective cover. 
     The following illustrations represent various embodiments of the workings and implementation of a quick-release mounting plate mechanism. 
       FIG. 75  illustrates a perspective view of an embodiment of a split mounting plate tablet holder  400  with bumper-style edge protection  421  where the mounting plate is split into two sections; a top section  430  and a bottom section  420 . 
       FIG. 76  illustrates a partial rear perspective view of an embodiment of a split mounting plate tablet holder with finger depressions  436 A and  436 B to enable quick separation of the top section  430  from the bottom section  420 . 
       FIG. 77  and  FIG. 78  show an image sequence of a split mounting plate tablet holder where the “T” shaped top section  430  is being separated from the “U” shaped bottom section  420 . 
       FIG. 79  illustrates a rear perspective view of the components of a split mounting plate tablet holder  400  showing the quick release mechanism that enables the quick separation of the “T” shaped top section  430  from the “U” shaped bottom section  420  while keeping the two sections coupled together through a sliding hinge plate  435 . Keeping the two sections attached prevents the loss or the misplacement of the top section  430 . 
     Because the bumper-style edge protection partially covers the edges of a tablet in order to provide drop protection and to keep a tablet in place, the top section  430  of the split mounting plate must slide completely off the tablet device in a vertical fashion and then swivel back along the axis of a pin  460  located at the bottom end of its hinge plate  435  for a tablet device to be completely free to glide off the lower section  420  of the split mounting plate. 
     This is achieved through a coupling mechanism that couples the first end  460 A and the second end  460 B of a hinge pin  460  located at the bottom end of hinge plate  435  to grooved vertical channels  440 A and  440 B located alongside the vertical side walls of a “U” shaped cavity  442  at the top end of the lower section  420  of the split mounting plate tablet holder  400 . 
     The shaft of hinge pin  460  that is located at the bottom end of hinge plate  435  may be coupled to the vertical channels alongside cavity  442  by being spring loaded in the same manner a wristwatch spring is spring loaded. 
     The top section  430  of the split mounting plate tablet holder  400  is secured to the lower section  420  of the split mounting plate tablet holder through a notch and groove mechanism. The notch  470  is located near the top end of the front side of hinge plate  435  and the grove  480  is located near the top end of the back side of the corresponding “U” shaped cavity  442  in the bottom section  420  of the split mounting plate tablet holder  400 . When the “T” shaped top section  430  is fully inserted into the “U” shaped bottom section  420 , the notch on the front side of the top section  470  comes into alignment with the groove on the rear side of the bottom section  480  and the two click together, securely joining the top section  430  of the split mounting plate tablet holder to its bottom section  420 . 
     This view also shows the positions of supporting elements  475 A and  475 B which are located in carved cavities in the bottom section  420  of the split mounting plate tablet holder  400 . 
       FIG. 80  illustrates a perspective view of the components of a split mounting plate tablet holder. This view specifically illustrates the shape and location of the locking notch  470  that is located near the top end of the front side of hinge plate  435  on the top section  430  of the split mounting plate tablet holder  400 . 
       FIG. 81  illustrates a two dimensional cross section of the attachment mechanism of a split mounting plate tablet holder with the top section  430  in an unlocked and open position. 
       FIG. 82  illustrates a two dimensional cross section of the attachment mechanism of a split mounting plate tablet holder with the top section  430  in the secure, locked position. 
       FIG. 83  illustrates a perspective view of a split plate tablet holder with bumper-style edge protection  400 . 
     While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.