| 摘要 |
A dental chair for supporting a patient during examination and the performance of procedures on the patient includes a patient support having a seat and a back, a base adapted to engage a floor surface, and a lift arm. The lift arm has a first end pivotally coupled to support structure at a first, terminal end of the base for rotation about a pivot axis defined by the support structure. A second end of the lift arm is coupled to the patient support.
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