Chair adjustment mechanism

A chair adjustment mechanism comprising:

• a pin retaining member, said pin retaining member having a slot having two laterally spaced pin receptors, each receptor partially defined by a peripheral wall of said slot and further defined by a spring finger that projects along side of said peripheral wall,
• wherein said spring finger is integrally formed with said pin retaining member such that walls of said spring finger are walls of said slot;
• said peripheral wall of said slot is a first peripheral slot wall and further comprising a second peripheral slot wall opposite said first peripheral slot wall, said spring finger projecting between said first peripheral slot wall and said second peripheral slot wall;
• and
• a first receptor of said receptors is spaced from a second receptor of said receptors by a convexly radiused section of said first peripheral slot wall.

A chair comprising:

• a seat;
• a J-bar extending upwardly from said seat, said J-bar having a vertical slot with teeth extending along one side to define a rack;
• a sleeve receiving said J-bar, said sleeve having a face with a pin retaining slot having two horizontally spaced pin receptors, each receptor partially defined by a peripheral wall of said pin retaining slot and further defined by a spring finger that projects along side of said peripheral wall;
• and
• a pin retained by said pin retaining slot and extending into said vertical slot,
• wherein said spring finger is integrally formed with said pin retaining member such that walls of said spring finger are walls of said slot;
• said peripheral wall of said slot is a first peripheral slot wall and further comprising a second peripheral slot wall opposite said first peripheral slot wall, said spring finger projecting between said first peripheral slot wall and said second peripheral slot wall;
• and
• a first receptor of said receptors is spaced from a second receptor of said receptors by a convexly radiused section of said first peripheral slot wall.