A height-adjustable support apparatus supports items above a user's lap while seated or reclining. The apparatus includes a bottom panel with optional pillow for resting on a seated user's lap, a top panel with upright rests configured to support items (such as electronic devices) at a desired angle
A height-adjustable support apparatus supports items above a user's lap while seated or reclining. The apparatus includes a bottom panel with optional pillow for resting on a seated user's lap, a top panel with upright rests configured to support items (such as electronic devices) at a desired angle of use, a four-bar linkage for moving the top panel between height-adjusted positions while maintaining a same horizontal orientation, and a lock engaging slots in the bottom panel for fixing a selected height-adjusted position of the top panel. Rests on the top panel are made of bent wire and can be selectively pivoted to upright positions for supporting devices, such as a cell phone, tablet computers, books, game displays, etc. A cup holder engages a rest on the top panel to support either a handled container (such as a mug) or no-handle container (such as a soda can).
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1. A height-adjustable support for supporting items above a user's lap while seated or reclining, comprising: a bottom panel adapted to rest on a seated user's lap;a top panel with at least one upward-facing rest configured to support electronic devices for use above the seated user's lap;a four-bar
1. A height-adjustable support for supporting items above a user's lap while seated or reclining, comprising: a bottom panel adapted to rest on a seated user's lap;a top panel with at least one upward-facing rest configured to support electronic devices for use above the seated user's lap;a four-bar linkage with one or more connected axles supporting the top panel above the bottom panel for movement between different height-adjusted positions while maintaining a desired horizontal orientation of the top panel; anda lock engaging one or more of the bottom panel, the top panel, and the linkage for fixing a selected one of the height-adjusted positions;wherein the four-bar linkage includes U-shaped bent-wire links, each having a pair of parallel legs forming portions of the four-bar linkage. 2. The height-adjustable support of claim 1, wherein the links are pivoted to the bottom panel. 3. The height-adjustable support of claim 1, wherein the bottom panel includes a plurality of grooves, and wherein the lock includes a bent-wire member configured to selectively engage a selected one of the grooves. 4. The height-adjustable support of claim 1, wherein the lock includes a lock bar that engages grooves in one of top and bottom panels, and is pivoted to other one. 5. The height-adjustable support of claim 4, wherein, when in the collapsed position, the four-bar linkage and the lock bar overlap such that a total thickness of the support is substantially a combination of thicknesses of the top panel, the bottom panel, and links in the four-bar linkage. 6. The height-adjustable support of claim 1, wherein the at least one upward-facing rest includes a U-shaped bent wire component. 7. The height-adjustable support of claim 1, wherein the at least one upward-facing rest includes two U-shaped bent wire components of different sizes, each pivoted to the top panel. 8. The height-adjustable support of claim 1, including a pillow releasably attached to a bottom of the bottom panel. 9. The height-adjustable support of claim 1, including an upwardly-facing rest on the top panel, and including a cup holder configured to stably engage the upwardly-facing rest on the top panel to stably support a beverage container on the top panel. 10. The height-adjustable support of claim 9, wherein the cup holder includes a first surface configured to receive a handle-containing container, and includes a second surface configured to receive a handle-absent container. 11. The height-adjustable support of claim 9, wherein the cup holder has a slot shaped to stably engage the upward-facing rest to secure the cup holder on the top panel. 12. A height-adjustable support for a user's lap, comprising: a bottom panel for resting on a seated user's lap;a top panel configured to support items above the seated user's lap; anda four-bar linkage supporting the top panel for vertical adjustment while maintaining a desired horizontal orientation to the bottom panel;the four-bar linkage including U-shaped links that include a single pivot-forming first section pivotally engaging one of the top and bottom panels and extending at least partially across a width of the one panel, panel-to-panel extending second sections that extend from ends of the first section and that extend between the top and bottom panels, and pivot-forming third sections pivotally engaging another one of the top and bottom panels and that extend from the second sections. 13. A height-adjustable support for a user's lap, comprising: a bottom panel for resting on a seated user's lap;a top panel configured to support items above the seated user's lap; anda four-bar linkage supporting the top panel for vertical adjustment while maintaining a desired horizontal orientation to the bottom panel;a pivot-forming top panel member attached to a bottom of the top panel;a pivot-forming bottom panel member attached to a top of the bottom panel;the four-bar linkage including links that each include a pivot-forming first section pivotally engaging the pivot-forming top member and that extend at least partially across a width of the top member, panel-to-panel extending second sections that extend from ends of the first section and that rotate with the first section and that extend between the top and bottom panels, and pivot-forming third sections that pivotally engaging the pivot-forming bottom member and that extend from the second sections. 14. A height-adjustable support for a user's lap, comprising: a bottom panel for resting on a seated user's lap;a top panel configured to support items above the seated user's lap; anda four-bar linkage supporting the top panel for vertical adjustment while maintaining a desired horizontal orientation to the bottom panel; andan upwardly-facing rest on the top panel that includes two U-shaped wire components pivoted to the top panel, the wire components being closely spaced and configured to overlap when moved to a storage position where the wire components nest into mating grooves in the top panel, but when moved to a raised position, the wire components being configured to engage front and rear opposing surfaces of a handheld electronic device to hold the electronic device in an upright viewable position.
Lubinskas Robert B. (Hastings MI) Schipper Timothy H. (Grand Rapids MI) Doane Roger E. (Jenison MI) Musculus Jeffrey A. (Wyoming MI), Adjustable dual worksurface support.
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