Patent ID: 6478379
Filing Date: 2002-11-12
Classification: A47C,A61P

Abstract:
A chair comprisinga frame having a pair of spaced-apart stationary back support mounting members, a lower back support adapted to support the dorsal portion of the back of a person seated on the chair, lower resilient mount units mounting the lower back support directly on the back support mounting members for pivotal movement about a horizontal pivot axis located at substantially the vertical center of the lower back support and biasing the lower back support to a predetermined position, an upper back support adapted to support the upper portion of the back of a person seated on the chair, and upper resilient mount units mounting the upper back support directly on the back support mounting members for pivotal movement about a horizontal pivot axis located at substantially the vertical center of the upper back support and biasing the upper back support to a predetermined position, the back supports being configured to provide support for the user's back throughout the region from the sacrum to just above the shoulders.