Patent ID: 7874620
Filing Date: 2011-01-25
Classification: A61G

Abstract:
1. A chair comprising: a base; a seating portion attached to the base via a lift assist mechanism that assists in moving the seating portion from a first reclined position to a second inclined position without electrical power, wherein the lift assist mechanism includes an over-center locking mechanism that locks the seating portion in at least one of the first reclined position and the second inclined position, wherein the over-center locking mechanism comprises a first link rotating about a first fixed axis and a locking arm pivotally connected to said first link about a second axis, wherein the locking arm is pivotal about a third axis, wherein the first fixed axis is positioned closer to the third axis than the second axis when the seating portion is positioned in the first reclined position and wherein the second axis is positioned closer to the third axis than the first fixed axis when the seating portion is positioned in the second inclined position.