作者: Chung L. Chang
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摘要: A "U"-shaped bracket having two parallel, flat side plates and a front plate connecting the ends of plates. The rear parallel opposite are left open. open end U-shaped is sized such that it can be welded onto cylindrical rod seat back frame. Aligned openings provided in to accept rotatably support armrest extending from pivotable member. includes laterally pin for use maintaining member plurality desired rotational positions with respect bracket. opening outside an upwardly rearwardly notch cylindircal rod. three stops positioned provide abutments at usable positions.