Patent ID: 7900952

Claim:
A folding chair, comprising: two front legs and two rear legs configured to support the chair in an upright position; two handle frames, wherein an end of each of the two handle frames is pivotally connected to an end of one of the two rear legs; a lock mechanism configured to prevent the folding chair from folding, the lock mechanism attached to at least one of the two handle frames and the lock mechanism includes a lock release button, directly attached to a locking rod located within a first handle frame of the two handle frames, and a folding prevention pin in contact with the locking rod; two first upper sliders configured to slide along respective handle frames; an upper X frame including two upper frame members pivotally connected to each other at respective intermediate portions, each upper frame member pivotally connected to respective first upper sliders and to respective rear legs; two second lower sliders attached to respective side frames and configured to slide along respective front legs; a lower X frame member including two lower frame members pivotally connected to each other at respective intermediate portions, each lower frame member pivotally connected to respective second lower sliders and attached to respective rear legs; two pivot frames linked to respective second sliders and pivotally attached to respective rear legs; and a housing member attached to one of the side frames and configured to house the folding prevention pin when the lock mechanism is in a locked position, wherein the side frames extend from the two second lower sliders to the two pivot frames, and when the lock release button is pressed, the locking rod moves down the first handle frame to push the folding prevention pin below the housing member to unlock the lock mechanism wherein the respective side frames are pivotally attached to the respective second lower sliders and the respective pivot frames, two lateral portions are rotationally attached to respective side frames and to respective rear legs, and a seat portion is supported by the back side frames and the lateral portions.