Card – picture – or sign exhibiting – Signs – Multiple layer
Patent
1996-03-07
1999-01-05
Green, Brian K.
Card, picture, or sign exhibiting
Signs
Multiple layer
434410, G09F 1900
Patent
active
058550836
DESCRIPTION:
BRIEF SUMMARY
FIELD OF INVENTION
The invention comprises an erasable sign. The sign of the invention may be a separate sign or may be an integral part of another product such as a label or book for example.
SUMMARY OF INVENTION
The present invention provides a form of sign which may normally be blank or erased, but can be operated to display a predetermined icon or indicia including one or more words, which can then be erased again at will and so on. The icon or indicia may be any graphical symbol of any type, or any word or words, or any combination of one or more symbol(s) or one or more word(s).
In broad terms in one aspect the invention comprises an erasable sign comprising a base layer comprising a contrasting icon or indicia in or below the base layer and an upper sheet extending over the base layer, the upper sheet and the base layer being releasably adhesive together under pressure applied on the upper sheet, and the base layer icon or indicia being visible through the upper sheet when the upper sheet is caused to releasably adhere to the base layer and being substantially less visible and preferably generally invisible when the upper sheet is released from the base layer.
The base layer may be formed in the shape of the icon or indicia as a positive image of the icon or indicia, or as a negative image, or the icon or indicia may be printed on a surface beneath the base layer as a positive or negative image and the base layer applied over said surface as a clear or substantially clear coating.
In broad terms in another aspect the invention comprises an erasable sign comprising a base layer and an upper sheet extending over the base layer with an icon or indicia printed on the upper sheet, the upper sheet and the base layer being releasably adhesive together under pressure applied on the upper sheet, and the icon or indicia being visible when the upper sheet is released from the base layer and being substantially less visible or generally invisible when pressure is applied on the upper sheet to cause the upper sheet to adhere to the base layer.
The icon or indicia may be printed on the underside or top of the upper sheet, as a positive or negative image.
In broad terms in a further aspect the invention comprises an erasable sign comprising a base layer and an upper sheet extending over the base layer with an icon or indicia printed on the upper sheet as a negative image, the upper sheet and the base layer being releasably adhesive together under pressure applied on the upper sheet, and the icon or indicia being visible when pressure is applied on the upper sheet to cause the upper sheet to adhere to the base layer and being substantially less visible and preferably generally invisible when the upper sheet is released from the base layer. Preferably the icon or indicia image is printed on the upper sheet with a colour which is only a medium contrast with the colour of the base layer, such as a lighter grey if the base layer is a dark grey or a lighter red if the base layer is a darker red, to assist in making the icon less visible or generally invisible when erased.
Preferably in all signs of the invention the upper sheet and base layer are sufficiently releasably adhesive together that both the upper sheet can be caused to adhere to the base layer by pressure applied manually on the upper sheet and also that the upper sheet can be released from the base layer by wiping a users finger or thumb across the top surface of the upper sheet to cause the upper sheet to move relative to the base layer. Preferably in such signs of the invention the upper sheet also extends over a "wipe-start" region adjacent the base layer in which wipe-start region the upper sheet and the base layer are not adhesive together, over which region a users finger or thumb may be placed to begin the finger wipe action to separate the upper sheet from the base layer.
The sign may have a contact adhesive applied to the rear surface or a part of the rear surface of the sign enabling it to be stuck onto any other object or item. Also the sign m
REFERENCES:
patent: 1881140 (1932-10-01), Settel
patent: 4763929 (1988-08-01), Weil
Bilbie James James Frank
Tipper Roy Beverley
Cary Gray
Green Brian K.
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