Pivoting support mechanism for chairs and other structures

A pivoting support for use with a chair having a seat and a base, the pivoting support comprising:

• a first support link and a second support link each extending between a first end and a second end, wherein the first ends of the first and second support links are rotatably mounted to the base and are rotatable relative to each other to define a first movement axis;
• a third support link and a fourth support link each extending between a first end and a second end, wherein the first end of the third support link is rotatably mounted to the second end of the first support link to define a second movement axis and the first end of the fourth support link is rotatably mounted to the second end of the second support link to define a third movement axis,
• wherein the second end of the third support link is configured to be rotatably mounted to the seat to define a fourth movement axis and the second end of the fourth support link is configured to be rotatably mounted to the seat to define a fifth movement axis,
• wherein the pivoting support allows the seat to move relative to the base about the first, second, third, fourth and fifth movement axes.