Patent ID: 6837542

Claim:
A chair frame for a stackable chair, said chair frame comprising: a seat support for supporting a seat of the stackable chair, said seat support defining first and second side frame portions, said seat support further defining a front frame portion and a rear frame portion, said first and second side frame portions extending between said front frame portion and said rear frame portion, said rear frame portion having a first end portion extending laterally outwardly beyond the point at which said first side frame portion engages said rear frame portion, and having a second end portion which extends laterally outwardly beyond the point at which said second side frame portion engages said rear frame portion; first and second front leg members extending downwardly from said seat support; first and second rear leg members extending downwardly from said seat support, said first rear leg member being secured to said first end portion of said rear frame portion whereby said first rear leg member is laterally outwardly displaced from said first side frame portion of said seat support, said second rear leg member being secured to said second end portion of said rear frame portion whereby said second rear leg member is laterally outwardly displaced from said second side frame portion of said seat support; a back support secured to said seat support, said back support defining first and second side portions and a lower frame portion disposed between said first and second side portions of said back support; a first bracing structure secured at a first end to said first side frame portion of said seat support at a point selectively spaced from said point at which said first side frame portion engages said rear frame portion and secured at a second end to said lower frame portion of said back support at a point inwardly spaced from said first side portion of said back support, whereby said first bracing structure extends between said seat support and said back support to strengthen the engagement of said seat support with said back support without inhibiting vertical stacking of similarly configured chair frames: and a second bracing structure secured at a first end to said second side frame portion of said seat support at a point selectively spaced from said point at which said second side frame portion engages said rear frame portion and secured at a second end to said lower frame portion of said back support at a point inwardly spaced from said second side portion of said back support, whereby said second bracing structure extends between said seat support and said back support to strengthen the engagement of said seat support with said back support without inhibiting vertical stacking of similarly configured chair frames.