Patent 7140688 was granted and assigned to Illinois Tool Works on November, 2006 by the United States Patent and Trademark Office.
A damped armrest including an armrest frame defining a bore and a fixed mandrel defining an axis about which the frame rotates. A reservoir is formed by the bore and the mandrel. Vanes on the mandrel project into the reservoir. The reservoir is filled with damping media for controlling rotation of the frame about the mandrel.