Locking base for tablet stand

1. An apparatus to support a holder for an electronic tablet, said apparatus comprising:

a base having a column extending upward from the base, said column having an annular bevel formed on an outer surface of the column;

a rotatable intermediate plate having a top and bottom surface and an aperture extending through the plate from the top to bottom surface, wherein said column of the base extends through said aperture and a portion of said base is below the bottom surface of said intermediate plate;

an expandable and contractible annular collar sized to encompass and engage at least a portion of said column above the top surface of said intermediate plate, wherein said collar includes an annular chamfer formed on an inner top edge of said annular collar;

said annular chamfer and said annular bevel sized to engage together when said collar is contracted and a diameter of said collar is reduced, and wherein reducing the diameter of said annular collar forces said collar downward towards the top surface of said intermediate plate and forces the base upward towards the bottom surface of said intermediate plate.

2. The apparatus as recited in claim 1 , further including a mating key and keyway, the key being formed on one of said collar and column, wherein engaging the mating key and keyway locks said collar from rotating about said column.

3. The apparatus as recited in claim 1 , further including spacer rings positioned between said intermediate plate.

4. The apparatus as recited in claim 3 , wherein said spacer rings reduce friction between said intermediate plate and said collar.

5. The apparatus as recited in claim 1 , wherein said annular collar includes a tensioning member to reduce an inner diameter of the annular collar.

6. The apparatus as recited in claim 1 , wherein said base further includes an annular slot formed in said based and said intermediate plate includes a tab extending downward from said bottom surface of said intermediate plate, wherein said tab is sized and positioned to slide in said slot of said been when said intermediate plate is rotated about said column.

7. The apparatus as recited in claim 1 , further including a cover to conceal said annular collar.

8. An apparatus to support a holder for an electronic tablet, said apparatus comprising:

a base having a column extending upward from the base, said column having an annular bevel formed on an outer surface of the column;

a rotatable intermediate plate having a top and bottom surface and an aperture extending through the plate from the top to bottom surface, wherein said column of the base extends through said aperture and a portion of said base is below the bottom surface of said intermediate plate;

an expandable and contractible annular collar sized to encompass and engage at least a portion of said column above the top surface of said intermediate plate, wherein said collar includes an annular chamfer formed on an inner top edge of said annular collar; and

a tablet stand attached to said intermediate plate;

wherein said annular chamfer and said annular bevel sized to engage together when said collar is contracted and a diameter of said collar is reduced, and wherein reducing the diameter of said annular collar forces said collar downward towards the top surface of said intermediate plate and forces said base towards the bottom surface of said intermediate plate.

9. The apparatus as recited in claim 8 , further including a mating key and keyway, the keyway being formed on said collar and the key being formed on the column, wherein engaging the mating key and keyway locks said collar from rotating about said column.

10. The apparatus as recited in claim 8 , further including spacer rings positioned between said intermediate plate and said collar.

11. The apparatus as recited in claim 10 , wherein said spacer rings reduce friction between said intermediate plate and said collar.

12. The apparatus as recited in claim 8 , wherein said annular collar includes a tensioning member to reduce an inner diameter of the annular collar.

13. The apparatus as recited in claim 8 , wherein said base further includes an annular slot formed in said based and said intermediate plate includes a tab extending downward from said bottom surface of said intermediate plate, wherein said tab is sized and positioned to slide in said slot of said been when said intermediate plate is rotated about said column.

14. An apparatus to support a holder for an electronic tablet, said apparatus comprising:

a base having a column extending upward from the base, said column having an annular bevel formed on an outer surface of the column;

an intermediate plate having a top and bottom surface and an aperture extending through the plate from the top to bottom surface, wherein said column of the base extends through said aperture and a portion of said base is below the bottom surface of said intermediate plate;

an expandable and contractible annular collar sized to encompass and engage at least a portion of said column above the top surface of said intermediate plate, wherein said collar includes an annular chamfer formed on an inner top edge of said annular collar, and wherein said annular collar includes a tensioning member to reduce an inner diameter of the annular collar;

a mating key and keyway, wherein engaging the mating key and keyway locks said collar from rotating about said column;

wherein said base further includes an annular slot formed in said based and said intermediate plate includes a tab extending downward from said bottom surface of said intermediate plate, wherein said tab is sized and positioned to slide in said slot of said been when said intermediate plate is rotated about said column; and

wherein said annular chamfer and said annular bevel sized to engage together when said collar is contracted and a diameter of said collar is reduced, and wherein reducing the diameter of said annular collar forces said collar downward towards the top surface of said intermediate plate and forces the base upwards towards the bottom surface of said intermediate plate.

15. The apparatus as recited in claim 14 , further including spacer rings positioned between said intermediate plate.

16. The apparatus as recited in claim 15 , wherein said spacer rings reduce friction between said intermediate plate and said collar.

17. The apparatus as recited in claim 14 , further including a tablet stand attached to said intermediate plate.

18. The apparatus as recited in claim 14 , further including a cover to conceal said annular collar.