| 摘要 |
A folding chair having seat, backrest, front leg, and rear leg interconnected with backrest pivoted to front leg and back leg, and seat pivoted to front leg and back leg so as to lock backrest when chair is unfolded, and when weight is applied to the seat a force is applied further locking the backrest. A modification provides a folding chair with outer and inner frames for locking backrest and rear leg in position when chair is unfolded for use. |
| 主权项 |
1. A folding chair comprising a front leg member, a rear leg member, a backrest member, and a seat member, the seat member having a rear end pivoted to the rear leg member, the seat member further being pivoted to the front leg member, the front leg member being inclined toward and passing over the top of the rear leg member when the chair is unfolded, the backrest having a lower end pivoted to the rear leg member, the backrest further pivoted to the front leg member at a point above the backrest lower end, the rear leg member having an axis, an extension of the axis past the top of the rear leg member defining an apex whereby the chair unfolds to position of backrest passing through the apex to locked position so that force applied to the seat member results in force applied by top of rear leg member to backrest further pushing the backrest to locked position. |
