Patent ID: 9131775
Filing Date: 2015-09-15
Classification: A47C,A63B

Abstract:
1. An apparatus comprising: a base; a seating surface, a back-supporting surface, a rotational mechanism to enable the back-supporting surface to rotate about an axis that is higher from a floor than is the seating surface, the rotational mechanism comprising a first element and a second element, the back-supporting surface and the first element being coupled for rotation about the axis relative to the second element in response to motion of a person sitting on the seating surface, the seating surface being movable relative to the base toward and away from a vertical plane that contains the axis, and an axis-transferring mechanism having a first element and a second element that are both together coupled between the second element of the rotational mechanism and the base and are movable relative to one another to transfer the axis toward and away from a floor, the first and second elements of the axis-transferring mechanism having at least one mode of operation in which they are movable relative to one another separately from the rotation of the back-supporting surface and the first element of the rotational mechanism relative to the second element of the rotational mechanism, the first element of the axis-transferring mechanism being coupled to the second element of the rotational mechanism, and the second element of the axis-transferring mechanism being coupled to the base, the axis being transferred, by motion of the first element of the axis-transferring mechanism relative to the second element of the axis-transferring mechanism, the axis being transferred toward the floor in response to an amount of force applied by the back of a person sitting on the seating surface and away from the floor in response to a lesser amount of force applied by the back of the person sitting on the seating surface.