Methods and apparatus for mechanically controlling adjustments of a chair

A chair assembly comprising:

• a seat;
• a back;
• a base;
• a motor;
• a resistance-sensing switch coupled to said motor and configured to control power to said motor;
• a height adjustment mechanism coupled to said motor and extending between said base and said seat for electrically adjusting a height of said seat with respect to said base, said height adjustment mechanism comprising a limit switch configured to limit an amount of movement of said seat with respect to said base;
• a control mechanism pivotally coupled between said seat and said height adjustment mechanism, said back coupled to said control mechanism, said control mechanism configured to mechanically and electrically adjust a position of said seat with respect to said base such that mechanical adjustments to said seat are independent of electrical adjustments to said seat;
• and
• a power kit assembly electrically coupled to said chair for supplying power to said motor and said control mechanism.

A method for assembling an adjustable chair including a seat, a back, a base, a motor, a height adjustment mechanism, a power kit assembly, and a control mechanism, said method comprising:

• coupling the control mechanism including at least a first motor-gear group to the chair seat to selectively electrically adjust a position of the seat relative to the pedestal base;
• coupling the chair back to the control mechanism;
• coupling a limit switch to the control mechanism to limit an amount of adjustment movement of the chair seat relative to the pedestal base;
• coupling a resistance-sensing switch to the control mechanism to control power to the motor;
• coupling the height adjustment mechanism to the control mechanism such that the height adjustment mechanism extends between the base and the chair seat for electrically adjusting a height of the seat with respect to the base;
• and
• electrically coupling the power kit assembly to the chair for supplying power to the motor, the height adjustment mechanism, and the control mechanism.