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US 6,308,446 B1Granted
Sign system
AssigneeVisual Graphic Systems Inc.
InventorDonall B. Healy
Life of this patent
Estimating the term…
Abstract
A modular sign comprises a magnetic backing sheet, a chassis for supporting the backing sheet to provide a stable platform, and one or more sign inserts which may be coated on one side with a magnetically attractive coating so that the inserts can be held magnetically on the backing sheet. The magnetically attractive coating comprises a mixture of hydrogen reduced iron of, preferably about 325 mesh, mixed with a clear enamel printing ink in approximately equal proportions.
Claims13
A sign for use with one or more replaceable sign inserts, comprising
- a chassis adapted to be supported in an upright position,
- a raised border of magnetic material attached to said chassis,
- at least one replaceable sign insert within said raised border of magnetic material, said sign insert having front and back surfaces with the entire back surface contacting said chassis, and
- a flexible, light transmitting cover sheet covering said sign insert, said cover sheet having an outer surface and an undersurface which engages the sign insert, and including a magnetically attractive material which is not a magnet coated on its undersurface adapted to hold the flexible, light transmitting cover sheet against said raised border of magnetic material.
1 more element
Dependencies are inferred from the claim text.