Patent ID: 8967724
Filing Date: 2015-03-03
Classification: A47C,B68G,Y10T

Abstract:
1. A chair assembly, comprising: a four-bar linkage assembly, comprising: an arm rest assembly adapted to support the arm of a seated user thereon and supported on the upper end of the four-bar linkage assembly; and a locking assembly including a first locking link having a first surface and a second locking link having plurality of teeth corresponding to a plurality of vertical positions of the four-bar linkage located between the raised position and the lowered position, wherein the first and second locking links are movable with respect to one another between a locked position, wherein the first surface engages at least one of the plurality of teeth to prevent adjustment of the four-bar linkage between the raised and lowered positions, and an unlocked position, wherein the first surface is spaced from the plurality of teeth, thereby allowing the four-bar linkage to be adjusted between the raised and lowered positions; and wherein at least a substantial portion of both the first and second locking links are located within the interior space.