| 摘要 |
An operatory stool (20) having an arcuate, body support arm (22) positioned above the level of the stool seat in which the body support arm (22) is reversible for right- or left-handed use of the stool by means of a rotatable mechanism between the body support arm (22) and a stanchion (24). Means (75, 84; Fig.4 - not shown) are provided for locking the body support arm (22) at the two positions. Additionally, a reversible locking mechanism (35) for resisting rotation of the body support arm (22) about the connecting member (24) in a predetermined direction in a horizontal plane is provided. <IMAGE> |
