Patent ID: 7134713

Claim:
A chair comprising: a support leg unit having a lower portion adapted to stand on a floor surface, and an upper portion opposite to said lower portion in an upright direction; a mounting frame including left and right side members opposite to each other in a transverse direction relative to the upright direction and each extending in the upright direction, a mounting crosspiece which is secured to said upper portion and which extends in the transverse direction to interconnect said left and right side members, and a cantilevered member which has an anchoring portion secured to said mounting crosspiece, and an anchored portion that is opposite to said anchoring portion in a longitudinal direction transverse to the upright and transverse directions and that extends to form left and right anchored ends opposite to each other in the transverse direction; a chair seat frame having front and rear seat portions disposed opposite to each other in the longitudinal direction, said rear seat portion having left and right coupling ends which are respectively proximate to said left and right side members and which are respectively movable relative to said left and right side members in the longitudinal direction between a forward position and a rearward position, said front seat portion having left and right pivoted ends which are opposite to each other in the transverse direction and which are respectively proximate to said left and right anchored ends; a footrest having two proximate ends which are mounted pivotally on said left and right pivoted ends, respectively, about a first pivot axis in the transverse direction, two distal ends which are opposite to said proximate ends and which are turnable about the first pivot axis between a low-lying position and a raised position, and two linked regions, each of which is disposed between a respective one of said proximate ends and a respective one of said distal ends and adjacent to said proximate ends, and which are respectively coupled to said left and right anchored ends about a second pivot axis in the transverse direction such that when said left and right coupling ends of said rear seat portion are moved from the forward position to the rearward position, said distal ends are turned from the low-lying position to the raised position; and a guiding mechanism disposed to guide movement of said left and right coupling ends of said rear seat portion relative to said left and right side members, respectively, in the longitudinal direction.