| 摘要 |
<p>Clearance in the seat base (14) to which a post (22) is pivotally mounted provides for wide-angle rotation of post-mounted equipment (20) that is supported by the post that is mounted to the base. The location of the pivot axis (30) is such that the mechanisms employed for pivotally mounting the equipment to a dental chair do not protrude from the back of the chair.</p> |
