Apparatus with weight responsive changeable adjusting characteristics

A reconfigurable apparatus for seating a user, the reconfigurable apparatus comprising:

• a frame;
• a seat mounted on the frame and movable relative to the frame between:
• a) a first position in which the seat resides with no user sitting on the seat;
• and b) a loaded position into which the seat moves from the first position as an incident of a user sitting on the seat;
• a back rest against which a user sitting on the seat can bear his/her back to produce a leaning force that changes an angular orientation of the back rest relative to the frame,
• the apparatus configured so that a first leaning force is required to be applied to the back rest to change the angular orientation of the back rest from a starting angular position relative to the frame with no user sitting in the seat;
• and
• an adjusting assembly comprising a plurality of gears that cooperate and move relative to each other as an incident of the seat moving from the first position into the loaded position and configured to thereby increase a resistance to changing of the angular orientation of the back rest from the starting angular position,
• whereby as an incident of a user sitting on the seat a leaning force greater than the first leaning force is required to change the angular position of the back rest from the starting angular position.