| 摘要 |
The foldable lap tray [12] of the invention includes a flat web [11] to cover the wearer's lap, a foldable bib [13] attached to the lap tray, and a loop of spring material [10] that holds the web taut when the spring is fully extended. The bib is reversibly connected to the user's neck by a circular strap [16] or other well known means of attachment, preferably with a slidable closure element [17]. The lap tray is foldable by collapsing the spring into an odd-numbered series of smaller connected loops. In one embodiment, the lap tray has one side that is relatively concave [18] so that the tray accommodates the contour of the user's body when placed on the lap.
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