Tilt mechanism for a chair

A tilt mechanism for use on a chair having chassis, a seat, and a back, the mechanism comprising:

• a seat base slidably coupled to the chassis and configured for rigid coupling with the chair seat;
• at least one slotted guide track disposed with the seat base;
• at least one back follower member configured for coupling with and depending downwardly from the chair back, each back follower member being received within one slotted guide track of the at least one slotted guide track for moveable engagement therewith;
• a back bracket configured for coupling with the chair back;
• and
• a back support bar having a body portion configured to extend from the chassis and a distal end configured for moveable engagement with the back bracket;
• wherein movement of the chair from an upright position to a recline position such that the chair back moves rearwardly and downwardly relative to the chassis and achieves an increasing angle of tilt relative to the chair seat results in the back bracket moving relative to and in engagement with the back support bar distal end, each back follower member moving generally forwardly within one slotted guide track of the at least one slotted guide track and the seat base sliding forwardly relative to the chassis.

A chair, comprising

• a seat;
• a back;
• a seat base;
• a support base assembly with an upwardly extending pedestal;
• a chassis coupled to the pedestal;
• and
• a tilt mechanism coupling the seat, the seat base and the chassis, the mechanism including:
• the seat base being slidably coupled to the chassis and rigidly coupled with the seat;
• a back bracket coupled with the back;
• a back support bar having a body portion extending from the chassis and a distal end moveably engaged with the back bracket;
• a guide track formed with at least one channel and being coupled with and extending rearwardly away from the seat base;
• and
• a back follower member coupled with and depending downwardly from the chair back and received within the at least one channel of the guide track for moveable engagement therewith;
• such that the configuration of the mechanism provides, upon movement of the chair from an upright position to a recline position whereby the chair back moves rearwardly and downwardly relative to the chassis and achieves an increasing angle of tilt relative to the seat, the back bracket moving relative to and in engagement with the back support bar distal end, the back follower member moving within the at least one channel of the guide track and the seat base sliding forwardly relative to the chassis.