| 摘要 |
Systems and techniques to facilitate lifting and access to compartments, such as spa compartments that contain spa features. A structure includes a base, risers rotatably coupled with an underside of the base, a support frame rotatably coupled with the risers, rollers rotatably coupled with the support frame, and one or more lever-arms rotatably coupled with at least one of the risers, the one or more lever-arms supporting the base when the support frame is in a nested position, and the one or more lever-arms providing leverage during transition from the nested position to an actuated position of the support frame, said transition causing the base to lower and be movable on the rollers.
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