| 摘要 |
An apparatus for elevating and lowering a freestanding seating structure, such as a house chair, recliner, or sofa. The apparatus is comprised of a base, an elevator assembly, a power assembly connected between the base and the elevator assembly, and a control assembly. The elevator assembly releasably receives, supports, elevates and lowers the seating structure. The power assembly provides power and supportingly moves the elevator assembly. The control assembly controls the power assembly and the position of the elevator assembly relative to the base. The invention also includes riser arms which are pivotally connected between the base and the elevator assembly for structurally supporting the stabilizing the elevator assembly.
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