Quick-release universal tablet holder for desktops and floor stands

1. A tablet holder comprising:

a mounting plate including a back surface with a coupling for a support device and a front surface with slots configured to receive arms, wherein each arm is configured to move independently of the other arms and is detachable from the mounting plate separately of the other arms;

the arms are each slidably mounted in the slots and each include an end extending outward from the mounting plate;

a locking mechanism releasably securing each of the arms to the mounting plate, and

for each arm, a swiveling ledge is connected by a locking hinge to the end of the arm, wherein the hinge includes a releasable locking mechanism, wherein the locking hinge includes a shaft having a locking region with three or more facetted sides; wherein the locking region engages locking chambers in each of the arm and the swiveling ledge, and wherein the locking region slides out of the locking chambers as the user presses on the locking hinge, and the number of sides of the locking region on the shaft equals the number of at least three discrete angular positions of the locking mechanism.

2. The tablet holder of claim 1 wherein the arms include a first pair of arms and a second pair of arms perpendicular to the first pair of arms.

3. The tablet holder of claim 1 wherein the arms include a center ridge and flanges on opposite sides of the center ridge, wherein the flanges engage channels within the respective slot of the mounting plate.

4. The tablet holder of claim 1 wherein the hinge includes a default position at which the hinge is biased and sets a default angular position between the swiveling ledge and the arm.

5. The tablet holder of claim 1 wherein the locking mechanism includes for each arm a threaded shaft with at one end a knob and a threaded opening in the arm to receive an opposite end of the threaded shaft.

6. The tablet holder of claim 1 wherein the coupling includes at least one of a ball and socket.

7. A tablet holder comprising:

a mounting plate including a back surface with a coupling for a support device and a front surface with a slot configured to receive a first arm;

the first arm includes a beam having a cross section matching a cross section of the slot such that the beam slides into the slot and an end extending axially from the slot and the end is attached to a locking hinge;

a locking mechanism releasably secures the first arm to the mounting plate to prevent sliding of the beam in the slot, and

a swiveling ledge connected the locking hinge to the end of the first arm, wherein the hinge includes a releasable locking mechanism configured to lock the swiveling ledge in a plurality of discrete angular positions with respect to the first arm.

8. The tablet holder of claim 7 further comprising a second slot in the mounting plate configured to receive a second arm, wherein the second arm is opposite to the first arm and a ledge on the second arm is opposite to the swiveling ledge on the first arm.

9. The tablet holder of claim 8 further comprising a second pair of arms perpendicular to the first and second arms.

10. The tablet holder of claim 7 wherein the locking hinge includes a shaft having a locking region with faceted sides, wherein the locking region engages locking chambers in each of the first arm and the swiveling ledge and the locking region slides out of the locking chambers as the user presses on the locking hinge.

11. The tablet holder of claim 7 wherein the beam of the first arm includes a center ridge and flanges on opposite sides of the center ridge, wherein the flanges engage channels within the first slot of the mounting plate.

12. The tablet holder of claim 7 wherein the locking hinge includes a default position at which the hinge is biased and sets a default angular position between the swiveling ledge and the arm.

13. The tablet holder of claim 7 wherein the locking mechanism includes for each arm a threaded shaft with at one end a knob and a threaded opening in the arm to receive an opposite end of the threaded shaft.

14. The tablet holder of claim 1 wherein the coupling includes at least one of a ball and socket.

15. A tablet holder comprising:

a mounting plate including a back surface with a coupling for a support device and a front surface with a first and second slot aligned along a first line, and a third and fourth slot aligned along a second line perpendicular to the first line, wherein each of the first, second, third and fourth slots have cross sections with opposing channels and an open gap to the front surface;

the first, second, third and fourth arms each including a beam having a cross section configured to slide into a respective one of the first, second, third and fourth slots, and each of the arms is configured to slide independently with respect to the sliding of the other arms;

a locking mechanism for each of the arms that releasably secures the arm to the mounting plate to prevent sliding of the beam in the slot, and

a swiveling ledge connected to a locking hinge at an end of each of the arms, wherein the hinge includes a releasable locking mechanism, wherein the swiveling ledges on each of the first, second, third and fourth arms are in a plane, and

wherein the releasable locking mechanism is configured to lock the swiveling ledge in at least three discrete angular positions with respect to the arm.

16. A tablet holder comprising:

a mounting plate including a back surface with a coupling for a support device and a front surface;

four detachable arms mounted slidably to the mounting plate and each of the arms is coaxial with one of the arms and orthogonal to the other two arms, wherein the arms are each configured to slide with respect to the mounting plate such that an end of each the arm extends beyond the perimeter of the mounting plate, and each of the arms slides independently of the other arms, and

a swiveling ledge and releasable locking hinge assembly mounted to the end of each of the arms, wherein releasable locking hinge is configured to lock the swiveling ledge at a plurality of discrete and predetermined angular positions with respect to the arm.

17. The tablet holder of claim 16 wherein the plurality of discrete angular positions includes at least three discrete angular positions all of which are within a range of zero to ninety degrees.

18. A tablet holder comprising:

a mounting plate including a back surface with a coupling for a support device and a front surface;

arms mounted slidably to the mounting plate, wherein the arms are configured to slide with respect to the mounting plate such that an end of each the arm extends beyond the perimeter of the mounting plate, and

a swiveling ledge and releasable locking hinge assembly mounted to the end of each of the arms, wherein releasable locking hinge is configured to lock the swiveling ledge in at least three discrete angular positions with respect to the arm,

wherein the releasable locking hinge assembly includes a shaft having a first locking region with faceted sides on an outer circumference of the shaft, and a chamber coaxial with and receiving the shaft, and the chamber includes a second locking region with faceted sides on an inner wall of the chamber, and

wherein the first locking region and second locking region are configured by virtue of the faceted sides to be slidably engage to lock an angular position of the locking hinge and to allow the locking hinge to pivot.

19. The tablet holder of claim 18 wherein the at least three discrete angular positions equal in number of positions to a number of the faceted sides on the first or second locking regions.