Passenger seat

1. A passenger seat comprising:

(a) a lower frame comprising a pair of supports, and a rear leg comprising an extension component, wherein the extension component comprises at least two pair of segments pivotally coupled to one another in an accordion arrangement;

(b) a seat pan adjustably coupled to the pair of supports via a coupling system; and

(c) a seat back pivotally coupled to the seat pan;

wherein the extension component is configured to adjust a height of the rear leg that in turn adjusts a height of the passenger seat between a sitting position and a bed position;

wherein the sitting position comprises a raised position, wherein the seat pan is positioned above the lower frame, and the lower frame and the rear leg are extended to a maximum height so that the seat pan is approximately 15 inches to approximately 19 inches above a vehicle floor; and

wherein the bed position comprises a lowered position, wherein the seat pan and the seat back are positioned to form a substantially planar and horizontal bed surface, the seat pan is positioned in front of the lower frame, and the lower frame and the rear leg are compressed to a minimum height that is overlapped by the seat back so that the bed surface is positioned proximate the vehicle floor.

2. The passenger seat of claim 1 , wherein the bed surface is positioned to form approximately a 3 degree angle relative to the vehicle floor in the bed position.

3. The passenger seat of claim 1 , wherein the coupling system comprises a pair of tracks positioned adjacent an upper portion of each support and a pair of projections extending from an aft end of the seat pan, each projection comprising a sprocket coupled to the corresponding track.

4. A passenger seat comprising:

(a) a lower frame comprising a pair of supports, each support comprising a forward end and an aft end, and a rear leg comprising an extension component;

(b) a seat pan comprising a pair of projections, wherein the pair of projections are coupled to the pair of supports via a coupling system comprising a pair of tracks positioned adjacent an upper portion of each support, and wherein each projection comprises a sprocket coupled to the corresponding track, wherein the coupling system is configured to allow the seat pan to translate between the forward end and the aft end of each support; and

(c) a seat back pivotally coupled to the seat pan;

wherein the extension component is configured to adjust a height of the rear leg that in turn adjusts a height of the passenger seat between a sitting position and a bed position,

wherein the sitting position comprises a raised position, wherein the seat pan is positioned above the lower frame, and the lower frame and the rear leg are extended to a maximum height so that the seat pan is approximately 15 inches to approximately 19 inches above a vehicle floor; and

wherein the bed position comprises a lowered position, wherein the seat pan and the seat back are positioned to form a substantially planar and horizontal bed surface, the seat pan is positioned in front of the lower frame, and the lower frame and the rear leg are compressed to a minimum height that is overlapped by the seat back so that the bed surface is positioned proximate the vehicle floor.

5. The passenger seat of claim 4 , wherein the bed surface is positioned to form approximately a 3 degree angle relative to the vehicle floor in the bed position.

6. The passenger seat of claim 4 , wherein the extension component comprises at least two pair of segments pivotally coupled to one another in an accordion arrangement.

7. A method of adjusting a passenger seat from a sitting position into a bed position, the passenger seat comprising a seat pan adjustably coupled to a lower frame, a seat back pivotally coupled to the seat pan, and a rear leg coupled to the lower frame, wherein the seat pan further comprises a pair of projections, each projection comprising a sprocket, and the lower frame further comprises a pair of supports, an upper portion of each support comprising a track, wherein the sitting position comprises a raised position, wherein the seat pan is positioned above the lower frame, and the lower frame and the rear leg are extended to a maximum height so that the seat pan is approximately 15 inches to approximately 19 inches above a vehicle floor, the method comprising:

(a) compressing the lower frame and the rear leg to minimum height;

(b) adjusting the seat pan into a position in front of the lower frame; and

(c) reclining the seat back until the seat back forms a substantially planar and horizontal bed surface with the seat pan, and the lower frame and the rear leg are overlapped by the seat back so that the bed surface is positioned proximate the vehicle floor.

8. The method of claim 7 , wherein the bed surface is positioned to form approximately a 3 degree angle relative to the vehicle floor in the bed position.

9. The method of claim 7 , wherein the rear leg comprises at least two pair of segments pivotally coupled to one another in an accordion arrangement.

10. The method of claim 7 , wherein a width of the lower frame does not extend past a width of the seat back.

11. An aircraft comprising a plurality of passenger seats,

wherein each passenger seat comprises a lower frame comprising a pair of supports, an upper portion of each support comprising a track, a seat pan comprising a pair of projections, each projection comprising a sprocket coupled to the corresponding track, a seat back pivotally coupled to the seat pan, and an extension component coupled to the lower frame that adjusts a height of the passenger seat between a sitting position and a bed position,

wherein the sitting position comprises a raised position, wherein the seat pan is positioned above the lower frame, and the lower frame and the extension component are extended to a maximum height so that the seat pan is approximately 15 inches to approximately 19 inches above a vehicle floor; and

wherein the bed position comprises a lowered position, wherein the seat pan and the seat back are positioned to form a substantially planar and horizontal bed surface, the seat pan is positioned in front of the lower frame, and the lower frame and the extension component are compressed to a minimum height that is overlapped by the seat back so that the bed surface is positioned proximate the vehicle floor.

12. The aircraft of claim 11 , wherein the plurality of passenger seats are arranged in rows of at least two seats, wherein at least one seat in the row is adjacent an aisle and at least one seat in the row is not adjacent the aisle, and wherein a passenger seated in the at least one seat not adjacent the aisle accesses the aisle by stepping over the bed surface of the at least one seat adjacent the aisle in the bed position.