Office chair

A chair comprising:

• a recliner mechanism;
• a back movably mounted to said recliner mechanism, said recliner mechanism permitting said back to recline under a force to a selectable limit;
• a seat movably mounted to said recliner mechanism and operatively linked to said back, whereby said seat moves forwardly as said back reclines;
• a recline limit control mechanism for adjustably controlling said selectable limit, said control mechanism including a trackway and a stop, at least one of said trackway and said stop traveling forwardly along a path as said seat moves forwardly, said selectable limit being defined by engagement of said stop with said trackway, said stop being movable with respect to said trackway such that said selectable limit is adjusted by movement of said stop, wherein said trackway includes a plurality of laterally offset steps.

A chair comprising:

• a recliner mechanism:
• a back mounted to said recliner mechanism, said back being reclinable between a default position and a reclined position under a rearward force;
• a seat movably mounted to said recliner mechanism and operatively linked to said back, whereby said seat moves forwardly along a path from a rearward position to a forward position as said back moves from said default position to said reclined position;
• a bias means for biasing said seat in said rearward position at a tension, said bias means including a biasing element extending between said recliner mechanism and said seat, said biasing element having a pre-tension, said biasing element oriented substantially parallel to said path and adapted to be varied in pre-tension along said path;
• a tension control mechanism adapted to selectively vary said pre-tension in said biasing element along said path,
• wherein said tension control mechanism includes a control knob rotatably mounted to said chair, said control knob being operatively connected to said biasing element, wherein rotation of said control knob varies said pre-tension in said biasing element,
• wherein said tension control mechanism includes a cam mounted to said control knob whereby rotation of said control knob results in rotation of said cam, said cam being operatively connected to said biasing element, wherein rotation of said cam varies said pre-tension in said biasing element,
• wherein said control mechanism includes a pre-tension lever operatively linked to said cam, said pre-tension lever pivoting in response to rotation of said cam, said pre-tension lever being operatively connected to said biasing element, wherein pivoting of said pre-tension lever varies said pre-tension in said biasing element,
• wherein said control mechanism provides full adjustment of said tension by rotation of said control knob through no more than about 180 degrees.

A chair comprising:

• a recliner mechanism;
• a back mounted to said recliner mechanism, said back being reclinable between a default position and a reclined position under a rearward force;
• a seat movably mounted to said recliner mechanism and operatively linked to said back, whereby said seat moves forwardly from a rearward position to a forward position in a path as said back moves from said default position to said reclined position;
• a bias means for biasing said seat in said rearward position at a tension, said bias means including a biasing element extending between said recliner mechanism and said seat, said biasing element having a pre-tension;
• a tension control mechanism for adjustably controlling said tension by selectively varying said pre-tension in said biasing element, wherein said recline mechanism permits said back to recline to a limit;
• and
• a recline limit control mechanism for adjustably controlling said limit, said control mechanism including a trackway and a stop, at least one of said trackway and said stop traveling forwardly along a path as said seat moves forwardly, said limit defined by engagement of said stop with said trackway, said stop being movable with respect to said trackway such that said limit is adjusted by movement of said stop.