Rocking movable chair

A rockingly movable chair comprising:

• a leg portion;
• a seat portion supported on said leg portion;
• one of said leg portion and said seat portion having a circular arc surface;
• the other of said leg portion and said seat portion having an element mounted for displacement along said circular arc surface such that said seat portion is rockably movable with respect to said leg portion;
• first gas spring means, connected between said leg portion and said seat portion, for movement biasing said seat portion in one rocking direction during rocking movement thereof;
• second gas spring means for movement raising and lowering selectively the height of said leg portion;
• each of said first and second gas spring means including a respective lock movable between a locking position preventing movement of the respective gas spring means and a releasing position allowing movement of the respective gas spring means;
• and
• actuating means for operating independently and selectively said locks of said first and second gas springs for selective and independent movement between said locking and releasing positions thereof, said actuating means comprising a single operating lever movably mounted on said seat portion, said lever having a portion for operating one of said locks and an arcuate member for operating the other of said locks.