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US 6,805,559 B2Granted
Erasable graphic panel
AssigneeHop Lee Cheong Industrial Company Limited
InventorKai-Shun Mak
Life of this patent
Estimating the term…
Abstract
An erasable graphic panel includes a substrate having a dark surface, a translucent film overlying the substrate and adapted upon application of pressure from a pointed implement to adhere locally to the substrate and thereby produced a visible trace of movement of the pointed implement upon the film. The panel also includes a slider positioned over the substrate and having a lifting blade extending under the film and being movable across the substrate to lift the film and thereby erase the visible trace.
Claims1
An erasable graphic panel comprising:
- a substrate having a dark surface, said substrate positioned upon a base that comprises parallel tracks, one at either lateral side of the substrate;
- a translucent film overlaying the substrate and adapted upon application of pressure from a pointed implement thereto to adhere locally to the substrate and thereby produce a visible trace of movement of the pointed implement upon the film;
- a slider positioned over the substrate and comprising a lifting blade extending under the film and being movable across the substrate to lift the film therefrom to thereby erase the visible trace, the slider further comprising a guide at both ends of the blade, each riding along a respective said track;
- and
- a frame attached to the base and covering a periphery of the film and extending over the tracks to constrain the guides in the tracks.
2 more elements
Dependencies are inferred from the claim text.