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US 5,667,876 AGranted
Informative card made of sheet metal
AssigneeJ.L. Clark, Inc.
InventorAndrew Radlicz
Life of this patent
Estimating the term…
Abstract
An informative card, such as a baseball trading card, has a rectangular shape and is made of sheet metal in such a way that it is free of pointed corners or exposed raw edges. The informative card comprises a single-layer metal blank which has a burr in the form of an upstanding pointed ridge along the periphery of the blank. A protective film, such as a layer of varnish, is applied on the card to cover the side with the burr so that the burr is shielded.
Claims16
An informative card formed of thin metal sheet comprising:
- a substantially flat and generally rectangular single-layer metal blank having first and second sides, four straight edges, four corners joining the straight edges and shaped to be free of discontinuous, and continuous peripheral burr of metal displaced in blanking and shaped in the form of an upstanding pointed ridge on the first side of the metal blank, at least one of the first and second sides carrying an indicia, the metal blank having no formed edges;
- and
- a protective film on the first side covering the peripheral burr and of sufficient thickness to shield the point of the burr.
A method for producing a metal informative card comprising the steps of:
- blanking a metal sheet to form a substantially flat metal blank having a generally rectangular shape including first and second sides, four straight edges, four corners joining the straight edges and shaped to be free of discontinuities, the blanking step forming a peripheral burr in the form of an upstanding pointed ridge on the first side of the metal blank;
- and
- without forming the edges of the metal blank, adhering a protective film to the first side and extending to the edges so as to cover the peripheral burr, making the film sufficiently thick to shield the pointed ridge of the burr.
Dependencies are inferred from the claim text.