Flex-back banquet chair

A flex-back banquet chair comprising:

• a base frame configured to retain a seat assembly;
• a lower support assembly configured to support the base frame, the lower support assembly comprising:
• a first side frame comprising a first leg and a second leg, the first side frame welded to a first side of the base frame;
• a second side frame comprising a third leg and a fourth leg, the second side frame welded to a second side of the base frame, the second side being opposite the first side;
• and
• a connector connecting the first side frame and the second side frame independent of a connection of the first side frame and the second side frame via the base frame;
• a backboard frame configured to retain a front backrest assembly and a back backrest assembly, the backboard frame including a plurality of support slats, each support slat extending from a first end of the backboard frame to a second end of the backboard frame, the first end being opposite the second end, the plurality of support slats configured to support the front backrest assembly and the back backrest assembly;
• and
• a flex bracket formed from sheet metal, the sheet metal bent at an angle of about 104°, the flex bracket comprising:
• a first mounting space extending along the flex bracket in a first direction, the first mounting space having a height of about 1.5 centimeters;
• a second mounting space;
• and
• three nerves, each nerve comprising an indentation in the sheet metal, each of the nerves being about 2 millimeters deep and about 8 millimeters wide, each of the nerves extending from a bottom edge of the first mounting space in a direction that is orthogonal to the first direction;
• wherein:
• the first mounting space is welded onto a back side of the backboard frame;
• the second mounting space is mounted to an underside of the base frame;
• and
• when the first mounting space is welded to the back side of the backboard frame and the second mounting space is mounted on the underside of the base frame, the backboard frame together with the first mounting space are configured to recline, in response to a force applied to the backboard frame, about a junction of the base frame and the second mounting space.

A flex-bracket comprising:

• sheet metal bent at an angle;
• a first mounting space extending along the sheet metal in a first direction;
• a second mounting space;
• and
• three nerves, each nerve comprising an indentation in the sheet metal, each of the nerves extending from a bottom edge of the first mounting space in a direction that is orthogonal to the first direction;
• wherein:
• the first mounting space is configured to be welded onto a back side of a backboard frame of a banquet chair;
• the second mounting space is configured to be mounted to an underside of a base frame of the banquet chair;
• and
• when the first mounting space is mounted to the back side of the backboard frame and the second mounting space is mounted on the underside of the base frame, the backboard frame together with the first mounting space are configured to recline, in response to a force applied to the backboard frame, about a junction of the base frame and the second mounting space.