Patent attributes
A chair that provides movement side-to-side about a first pivot axis positioned above the seat plane allows the user a wide range of dynamic movement, but does not require constant or excessive action on the part of the user to maintain a desired position. In addition and concurrently thereto, the chair may include structures that allow the seat to be easily positioned and adjusted side-to-side from a neutral position along a defined pivot axis above a seat plane, and it may, if desired, also provide forward-and-back movement of the seat about a second pivot located above or below the seat plane, an improved seatback that supports the user's back without limiting the user's ability to move their shoulder blades, an improved biasing structure for biasing the seat to a neutral position, an imbedded controller or imbedded sensor for allowing the seat's position to be used as a computer controller, or the gathering of the users motion data, and an adjustable tilt locking system to allow the forward-and-back movement of the seat to be held in a desired position.
