| 摘要 |
The present invention provides various embodiments of stands and lift bases capable of supporting various objects above a support surface. The stands and lift bases are configurable between a stationary and mobile configurations. The stands may include a frame and a top adapted to support various objects, and the lift bases may include a base adapted support a stationary stand. Embodiments of the stands and lift bases include a lift device that can be operated to engage or disengage wheels or rollers with the support surface to place the stand or base in stationary and mobile configurations. When in the mobile configuration, the stand or lift base is rollingly supported on the wheels or rollers. Some embodiments of the stands and lift bases also include locking devices that allow the user to fix the stand or lift base in the mobile and/or stationary configurations.
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