Patent ID: 8317266

Claim:
A vehicle seat comprising: a support frame including a bottom frame portion for mounting in a generally horizontal orientation on an associated vehicle floor, a back frame portion, and a connection for mounting the back frame portion on the bottom frame portion in a generally upstanding orientation; a suspension frame having a bottom seating portion, a backrest and a pivotal connection that pivotally mounts the backrest on the bottom seating portion for pivotal movement with respect thereto; a spring suspension for suspending the bottom seating portion of the suspension frame on the bottom frame portion of the support frame for vertical movement, the spring suspension including four springs for suspending the bottom seating portion of the suspension frame at spaced corner location on the bottom frame portion of the support frame for vertical movement; a control lever having at least one pivotal connection to the bottom frame portion of the support frame and a pivotal connection to the bottom seating portion of the suspension frame to provide horizontal positioning of the bottom seating portion upon vertical movement of the suspension frame; and a slide assembly that extends between the backrest of the suspension frame and the back frame portion of the support frame to provide horizontal positioning of the backrest upon vertical movement of the suspension frame.