Patent ID: 7452035

Claim:
A chair comprising: a back rest constructed from blow-molded plastic, the back rest including a right side, a left side, a front portion and a rear portion that is spaced apart from the front portion; a chair seat constructed from blow-molded plastic, the chair seat including a right side, a left side, an upper portion and a lower portion that is spaced apart from the upper portion, the chair seat being disposed at an angle relative to the back rest; a frame that is sized and configured to support the chair seat and back rest, the frame comprising: an upper right side portion that is connected to the right side of the back rest; an upper left side portion that is connected to the left side of the back rest, the back rest being at least substantially disposed between the upper right side portion and the upper left side portion of the frame; a lower right side portion that is generally aligned with the right side of the chair seat; and a lower left side portion that is generally aligned with the left side of the chair seat, the chair seat being at least substantially disposed between the lower right portion and the lower left side portion of the frame; a crossbar connected to the lower right side portion of the frame and the lower left side portion of the frame, the crossbar including an engaging portion that is sized and configured to allow flexing of the chair seat, the engaging portion of the crossbar being sized and configured to limit flexing of the chair seat when the engaging portion of the crossbar contacts the lower portion of the chair seat; and an opening formed in the back rest, the opening extending completely through the front portion of the back rest and the rear portion of the back rest, the opening at least partially defined by a wall disposed between the front portion of the back rest and the rear portion of the back rest, the wall being formed by a rearward extending and at least partially curved portion of the front portion of the back rest directly contacting and engaging an inwardly extending and at least partially curved portion of the rear portion of the back rest, the opening being at least partially formed during the blow-molding process, the opening including an upper portion that is generally aligned with an end of the upper right side portion of the frame and an end of the upper left side portion of the frame.