Portable folding chair

1. A portable folding chair comprising:

a central assembly having an upper portion and a lower portion that is connectable to the upper portion so that the upper portion can swivel with respect to the lower portion;

a plurality of leg members attached to the lower portion of the central assembly, wherein each of the plurality of leg members are moveable between a folded position and a deployed position;

a plurality of seat members attached to the upper portion of the central assembly, wherein each of the plurality of seat members are moveable between a folded position and a deployed position;

wherein the lower portion of the central assembly is fixed in place and the upper portion is adapted to swivel with respect to the lower portion of the central assembly; and

a plurality of upper geared ends and a plurality of lower geared ends; wherein each of the plurality of upper geared ends comprises a seat member connection stem; wherein the respective plurality of seat members are connectable to the respective plurality of seat member connection stems; wherein each of the plurality of lower geared ends comprises a leg member connection stem; and wherein the respective plurality of leg members are connectable to each of the respective plurality of leg member connection stems.

2. The portable folding chair of claim 1 , further comprising a plurality of seat connection members each connected to an end portion of the respective seat members; a respective plurality of lower seat members each rotatably connected to a respective one of the seat connection members; and a pair of upper seat members connected to two of the plurality of lower seat members; and wherein the lower seat members and the upper seat members are moveable between a folded position and a deployed position; wherein the lower seat members and the upper seat members are movable to the deployed position when the seat members are in the deployed position.

3. The portable folding chair of claim 2 , wherein the upper seat members are connectable to end portions of the lower seat members; wherein the upper seat members are each telescoping; and wherein the upper seat members are adapted to be moved between a collapsed position and an extended position.

4. The portable folding chair of claim 2 , further comprising a chair upholstery member having portions adapted to be removably attached to the lower seat members and portions adapted to be attached to both the lower seat members and the upper seat members; and wherein the chair upholstery member comprises a backrest upholstery member, a seat upholstery member and a pair of armrest upholstery members.

5. The portable folding chair of claim 1 , wherein adjacent ones of the upper geared members are adapted to matingly engage one another so that rotation of one of the plurality of upper geared members causes rotation of each of the plurality of upper geared members; and wherein adjacent ones of the lower geared members are adapted to matingly engage one another so that rotation of one of the plurality of lower geared members causes rotation of each of the plurality of lower geared members.

6. The portable folding chair of claim 1 , further comprising an upper lock member and a lower lock member; wherein each of the upper lock member and lower lock member is moveable between an engaged position and a disengaged position; wherein when each of the upper lock member and the lower lock member is in the engaged position, the respective seat members and leg members are prevented from being moved between the deployed position and the folded position; and wherein when each of the upper lock member and the lower lock member is in the disengaged position, the respective seat members and leg members are moveable between the deployed position and the folded position.

7. The portable folding chair of claim 6 , further comprising a respective plurality of torsion members connected between the lower portion of the central assembly and each of the respective plurality of lower geared members and also between the upper portion of the central assembly and each of the respective plurality of upper geared members; wherein each of the torsion members are configured to move the plurality of leg members connected to the lower gear members to the deployed position when the lower lock member is in the disengaged position and configured to move the plurality of seat members connected to the upper gear members to the deployed position when the upper lock member is in the disengaged position.

8. The portable folding chair of claim 1 , wherein the upper portion of the central assembly is prevented from swiveling with respect to the lower portion of the central assembly when the plurality of leg members and the plurality of seat members are in the folded position.

9. A portable chair comprising:

a central assembly having an upper portion, a medial portion connected to the upper portion, and a lower portion connected to the medial portion;

a plurality of leg members attached to the lower portion of the central assembly, wherein each of the plurality of leg members are moveable between a folded position and a deployed position;

a plurality of seat members attached to the upper portion of the central assembly, wherein each of the plurality of seat members are moveable between a folded position and a deployed position;

wherein the medial portion of the central assembly can swivel with respect to the lower portion of the central assembly;

wherein the upper portion of the central assembly is pivotable with respect to the medial portion of the central assembly; and

a plurality of upper geared ends and a plurality of lower geared ends; wherein each of the plurality of upper geared ends comprises a seat member connection stem; wherein the respective plurality of seat members are connectable to the respective plurality of seat member connection stems; wherein each of the plurality of lower geared ends comprises a leg member connection stem; and wherein the respective plurality of leg members are connectable to each of the respective plurality of leg member connection stems.

10. The portable chair of claim 9 , further comprising at least a pair of seat connection members connected to an end portion of a respective pair of the plurality of seat members; a respective pair of lower seat members each rotatably connected to the respective pair of the plurality of the seat connection members; and wherein the lower seat members are moveable between a folded position and a deployed position; wherein the lower seat members are movable to the deployed position when the seat members are in the deployed position.

11. The portable chair of claim 10 , further comprising a chair upholstery member having portions adapted to be removably attached to the lower seat members and portions adapted to be attached to both the lower seat members and the seat members; and wherein the chair upholstery member comprises a backrest upholstery member and a seat upholstery member.

12. The portable chair of claim 9 , wherein adjacent ones of the upper geared members are adapted to matingly engage one another so that rotation of one of the plurality of upper geared members causes rotation of each of the plurality of upper geared members; and wherein adjacent ones of the lower geared members are adapted to matingly engage one another so that rotation of one of the plurality of lower geared members causes rotation of each of the plurality of lower geared members.

13. The portable chair of claim 9 , further comprising an upper lock member and a lower lock member; wherein each of the upper lock member and lower lock member is moveable between an engaged position and a disengaged position; wherein when each of the upper lock member and the lower lock member is in the engaged position, the respective seat members and leg members are prevented from being moved between the deployed position and the folded position; and wherein when each of the upper lock member and the lower lock member is in the disengaged position, the respective seat members and leg members are moveable between the deployed position and the folded position.

14. The portable chair of claim 13 , further comprising at respective plurality of torsion members connected between the lower portion of the central assembly and each of the respective plurality of lower geared members and also between the upper portion of the central assembly and each of the respective plurality of upper geared members; wherein each of the torsion members are configured to move the plurality of leg members connected to the lower gear members to the deployed position when the lower lock member is in the disengaged position and configured to move the plurality of seat members connected to the upper gear members to the deployed position when the upper lock member is in the disengaged position.

15. The portable chair of claim 9 , further comprising a lower gear cover member adapted to overlie the plurality of lower geared members, and an upper gear cover member adapted to overlie the plurality of upper geared members.

16. The portable chair of claim 9 further comprising a lock pin; wherein the lock pin is adapted to engage an upper assembly portion passageway formed through portions of the upper portion of the central assembly and a medial assembly portion passageway formed through portions of the medial portion of the central assembly; wherein the lock pin is moveable between an engaged position and a disengaged position; and wherein, when the pin is in the engaged position, the upper portion of the central assembly is prevented from pivoting with respect to the medial portion of the central assembly; and wherein when the lock pin is in the disengaged position, the upper portion of the central assembly is pivotable with respect to the medial portion of the central assembly.

17. The portable chair of claim 9 , wherein the medial portion of the central assembly is prevented from swiveling with respect to the lower portion of the central assembly when the plurality of leg members and the plurality of seat members are in the folded position; and wherein the upper portion of the central assembly is prevented from pivoting with respect to the medial portion of the central assembly when the plurality of leg members and the plurality of seat members are in the folded position.

18. A portable chair comprising:

a central assembly having an upper portion, a medial portion connected to the upper portion, and a lower portion connected to the medial portion;

a plurality of leg members attached to the lower portion of the central assembly, wherein each of the plurality of leg members are moveable between a folded position and a deployed position;

a plurality of seat members attached to the upper portion of the central assembly, wherein each of the plurality of seat members are moveable between a folded position and a deployed position;

wherein the upper portion of the central assembly is pivotable with respect to the medial portion of the central assembly; and

a plurality of upper geared ends and a plurality of lower geared ends; wherein each of the plurality of upper geared ends comprises a seat member connection stem; wherein the respective plurality of seat members are connectable to the respective plurality of seat member connection stems; wherein each of the plurality of lower geared ends comprises a leg member connection stem; and wherein the respective plurality of leg members are connectable to each of the respective plurality of leg member connection stems.

19. The portable chair of claim 18 , further comprising at least a pair of seat connection members connected to an end portion of a respective pair of the plurality of seat members; a respective pair of lower seat members each rotatably connected to the respective pair of the plurality of the seat connection members; and wherein the lower seat members are moveable between a folded position and a deployed position; wherein the lower seat members are movable to the deployed position when the seat members are in the deployed position.

20. The portable chair of claim 18 , wherein adjacent ones of the upper geared members are adapted to matingly engage one another so that rotation of one of the plurality of upper geared members causes rotation of each of the plurality of upper geared members; and wherein adjacent ones of the lower geared members are adapted to matingly engage one another so that rotation of one of the plurality of lower geared members causes rotation of each of the plurality of lower geared members.

21. The portable chair of claim 18 , further comprising an upper lock member and a lower lock member; wherein each of the upper lock member and lower lock member is moveable between an engaged position and a disengaged position; wherein when each of the upper lock member and the lower lock member is in the engaged position, the respective seat members and leg members are prevented from being moved between the deployed position and the folded position; and wherein when each of the upper lock member and the lower lock member is in the disengaged position, the respective seat members and leg members are moveable between the deployed position and the folded position.

22. The portable chair of claim 21 , further comprising at respective plurality of torsion members connected between the lower portion of the central assembly and each of the respective plurality of lower geared members and also between the upper portion of the central assembly and each of the respective plurality of upper geared members; wherein each of the torsion members are configured to move the plurality of leg members connected to the lower gear members to the deployed position when the lower lock member is in the disengaged position and configured to move the plurality of seat members connected to the upper gear members to the deployed position when the upper lock member is in the disengaged position.

23. The portable chair of claim 18 further comprising a lock pin; wherein the lock pin is adapted to engage an upper assembly portion passageway formed through portions of the upper portion of the central assembly and a medial assembly portion passageway formed through portions of the medial portion of the central assembly; wherein the lock pin is moveable between an engaged position and a disengaged position; and wherein, when the pin is in the engaged position, the upper portion of the central assembly is prevented from pivoting with respect to the medial portion of the central assembly; and wherein when the lock pin is in the disengaged position, the upper portion of the central assembly is pivotable with respect to the medial portion of the central assembly.

24. The portable chair according to claim 18 wherein the upper portion of the central assembly is prevented from pivoting with respect to the medial portion of the central assembly when the plurality of leg members and the plurality of seat members are in the folded position.