Back construction
View Patent ↗A seating structure includes a central spine and an upper back structure having a pair of arms extending upwardly and outwardly from the central spine. The upper back structure is pivotally connected to the central spine about a first horizontal axis. A back support structure is pivotally connected to the spine about a second horizontal axis and is pivotally connected to the ends of each of the arms about a third horizontal axis.
1. A seating structure comprising:
a central spine;
an upper back structure comprising a pair of arms extending upwardly and outwardly from said central spine;
a back support structure pivotally connected to the ends of each of said arms about a horizontal axis, wherein said back support structure comprises a plurality of levers, wherein said back support structure comprises a cross member extending between a pair of laterally spaced lugs connected to said ends of said arms about said horizontal axis; and
a pad structure connected to said levers.
2. A seating structure comprising:
a central spine;
an upper back structure comprising a pair of arms extending upwardly and outwardly from said central spine, wherein said upper back structure is pivotally connected to said central spine about a first horizontal axis; and
a back support structure pivotally connected to said spine about a second horizontal axis and pivotally connected to the ends of each of said arms about a third horizontal axis, wherein said first and second horizontal axes are coaxial.
3. The seating structure of claim 2 wherein said back support structure comprises a plurality of levers.
4. The seating structure of claim 3 further comprising a pad structure connected to said levers.
5. A seating structure comprising:
a central spine;
an upper back structure comprising a pair of arms extending upwardly and outwardly from said central spine, wherein said upper back structure is pivotally connected to said central spine about a first horizontal axis; and
a back support structure pivotally connected to said spine about a second horizontal axis and pivotally connected to the ends of each of said arms about a third horizontal axis, wherein said back support structure comprises a plurality of levers, wherein said plurality of levers comprises a plurality of longitudinally extending levers, and a pair of laterally extending levers secured to opposite ends of at least some of said longitudinally extending levers.
6. A seating structure comprising:
a central spine;
an upper back structure comprising a pair of arms extending upwardly and outwardly from said central spine, wherein said upper back structure is pivotally connected to said central spine about a first horizontal axis; and
a back support structure pivotally connected to said spine about a second horizontal axis and pivotally connected to the ends of each of said arms about a third horizontal axis, wherein said back support structure comprises a plurality of levers, and a pad structure connected to said levers, wherein said plurality of levers defines a plurality of connector nodes, and wherein said pad structure comprises a plurality of pads corresponding to said plurality of connector nodes.
7. The seating structure of claim 6 wherein adjacent ones of said pads are separated by a plurality of slits.
8. The seating structure of claim 7 wherein said slits define connectors connecting said adjacent ones of said pads.
9. A seating structure comprising:
a central spine;
an upper back structure comprising a pair of arms extending upwardly and outwardly from said central spine, wherein said upper back structure is pivotally connected to said central spine about a first horizontal axis; and
a back support structure pivotally connected to said spine about a second horizontal axis and pivotally connected to the ends of each of said arms about a third horizontal axis, wherein said back support structure comprises a cross member extending between a pair of laterally spaced lugs connected to said ends of said arms about said third horizontal axis.
10. A seating structure comprising:
a central spine;
an upper back structure comprising a pair of arms extending upwardly and outwardly from said central spine;
a back support structure pivotally connected to the ends of each of said arms about a horizontal axis, wherein said back support structure comprises a plurality of levers, wherein said plurality of levers comprises a plurality of longitudinally extending levers, and a pair of laterally extending levers secured to opposite ends of at least some of said longitudinally extending levers; and
a pad structure connected to said levers.
11. The seating structure of claim 10 wherein said plurality of levers defines a plurality of connector nodes, and wherein said pad structure comprises a plurality of pads corresponding to said plurality of connector nodes.
12. A seating structure comprising:
a central spine;
an upper back structure comprising a pair of arms extending upwardly and outwardly from said central spine;
a back support structure pivotally connected to the ends of each of said arms about a horizontal axis, wherein said back support structure comprises a plurality of levers; and
a pad structure connected to said levers, wherein said plurality of levers defines a plurality of connector nodes, and wherein said pad structure comprises a plurality of pads corresponding to said plurality of connector nodes, wherein adjacent ones of said pads are separated by a plurality of slits.
13. The seating structure of claim 12 wherein said slits define connectors connecting said adjacent ones of said pads.