| 摘要 |
A transportable overbed table embodying a wheeled base from which there projects upwardly a vertical column on which there is vertically slidable a table-supporting carriage. An elevation screw is provided for raising and lowering the carriage. In one form of the invention such carriage movement is effected under the control of an electric motor and in another form it is effected manually under the control of a hand wheel. In the latter instance, the weight of the table is counterbalanced by means of an involute clock-type spring which is associated with the elevation screw. In both forms, the carriage preferably, but not necessarily, may support one or more drawer units which are capable of universal swinging movement in a horizontal plane.
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