Chair with adjustable foot support

A chair comprising:

• a seating structure rotatably coupled to a base and vertically moveable between at least a first position and a second position;
• a foot support disposed a vertical distance from the seating structure and rotatably coupled to the seating structure and non-rotatably coupled to the base;
• a control mechanism operably coupled to the foot support for adjusting the vertical distance between the foot support and the seating structure, the control mechanism comprising a control handle operably coupled to the seating structure such that the control handle rotates with the seating structure when the seating structure is rotated and moves vertically with the seating structure when the seating structure is vertically moved between the first position and the second position;
• and
• wherein the base comprises a support column with an upper portion coupled to the seating structure and rotationally coupled to the foot support, wherein the foot support and the upper portion of the support column move vertically with the seating structure when the seating structure is moved between the first position and the second position, wherein the support column comprises a vertically extendable spring.

A chair comprising:

• a base;
• a seating structure rotatably coupled to the base and vertically moveable between at least a first position and a second position;
• a foot support disposed a vertical distance from the seating structure and rotatably coupled to the seating structure and non-rotatably coupled to the base;
• and
• a control mechanism operably coupled to the foot support for adjusting the vertical distance between the foot support and the seating structure, the control mechanism comprising a control handle operably coupled to the seating structure such that the control handle rotates with the seating structure when the seating structure is rotated and moves vertically with the seating structure when the seating structure is vertically moved between the first position and the second position, the control mechanism further comprising a lead screw operably coupling the foot support to the control mechanism, and a control shaft comprising a first and second end, the first end comprising the control handle and the second end operably coupled to a first gear wheel;
• and a second gear wheel operably coupling the first gear wheel to the lead screw, such that rotation of the control shaft causes vertical movement of the foot support.

A chair comprising:

• a seating structure rotatably coupled to a base and vertically moveable between at least a first position and a second position;
• a foot support disposed a vertical distance from the seating structure and rotatably coupled to the seating structure and non-rotatably coupled to the base;
• a control mechanism operably coupled to the foot support for adjusting the vertical distance between the foot support and the seating structure, the control mechanism comprising a control handle operably coupled to the seating structure such that the control handle rotates with the seating structure when the seating structure is rotated and moves vertically with the seating structure when the seating structure is vertically moved between the first position and the second position;
• wherein the base comprises a support column with an urser portion coupled to the seating structure and rotationally coupled to the foot support, wherein the foot support and the urser portion of the support column move vertically with the seating structure when the seating structure is moved between the first position and the second position;
• a support tube vertically disposed over at least a portion of the support column, the support tube comprising a top portion,
• a housing disposed around at least a portion of the control mechanism;
• and
• a top cap non-rotatably coupled to the foot support and disposed at the top portion of the support tube and affixed thereto,
• wherein the housing rotates with respect to the top cap when the seating structure is rotated.

A chair comprising:

• a base;
• a seat rotatably coupled to the base and vertically moveable between at least a first position and a second position, the seat comprising a top surface with a nadir and
• a side edge, the side edge defining a vertical plane and the nadir defining a horizontal plane;
• a foot support disposed a vertical distance from the seat and rotatably coupled to the seat and non-rotatably coupled to the base;
• a control mechanism operably coupled to the foot support for adjusting the vertical position of the foot support, the control mechanism comprising a control handle with a distal end, wherein the distal end of the control handle is disposed at a horizontal location within 3 inches of the vertical plane defined by the side edge of the seat and a vertical location within 18 inches of the horizontal plane defined by the nadir of the top surface of the seat, and wherein the control handle is operably coupled to the seat such that the control handle rotates with the seat while the foot support remains non-rotatably stationary when the seat is rotated and moves vertically with the seat when the seat is vertically moved between the first position and the second position;
• and
• a lead screw operably coupling the foot support to the control mechanism.

A chair comprising:

• a base;
• a seat rotatably coupled to the base and vertically moveable between at least a first position and a second position, the seat comprising a top surface with a nadir and a side edge, the side edge defining a vertical plane and the nadir defining a horizontal plane;
• a foot support disposed a vertical distance from the seat and rotatably coupled to the seat and non-rotatably coupled to the base;
• and
• a control mechanism operably coupled to the foot support for adjusting the vertical position of the foot support, the control mechanism comprising a control handle with a distal end, wherein the distal end of the control handle is disposed at a horizontal location within 3 inches of the vertical plane defined by the side edge of the seat and a vertical location within 18 inches of the horizontal plane defined by the nadir of the top surface of the seat, a lead screw operably coupling the foot support to the control mechanism, a control shaft comprising a first and second end, the first end comprising the control handle and the second end operably coupled to a first gear wheel;
• and
• a second gear wheel operably coupling the first gear wheel to the lead screw, such that rotation of the control shaft causes vertical movement of the foot support.

A method of adjusting a foot support comprising:

• providing a chair comprising:
• a base comprising a support column;
• a seat supported by the support column and vertically moveable between at least a first position and a second position;
• the foot support, wherein the foot support is disposed a vertical distance from the seat and rotatably coupled to the seat and non-rotatably coupled to the base;
• and
• a control mechanism operably coupled to the foot support;
• sitting on the seat;
• rotating the seat and control mechanism about a vertical axis without moving the seat in a vertical direction;
• adjusting the control mechanism while sitting on the seat to change the vertical distance between the seat and the foot support without vertically moving or rotating the seat and without rotating the foot support;
• and
• moving the seat between the first position and the second position, wherein the foot support moves vertically with the seat as the seat is moved between the first position and the second position.