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US 4,303,811 AGranted
Kit for use in the construction of custom prototype membrane switch panels
AssigneeW. H. Brady Co.
InventorWayne K. Parkinson
Life of this patent
Estimating the term…
Abstract
A kit for making custom prototype membrane switch panels which includes a plurality of switch units and an overlay unit for integration and protection of said switch panels and indicia carried thereby.
Claims5
A kit capable of being assembled into a prototype membrane switch comprising
- a plurality of switch units
- each said switch unit comprising at least one membrane switch, each said membrane switch including upper and lower plastic membranes, electrical contact portions adhered to said membranes, and a spacer element between said membranes, and
- an overlay sheet adapted to be affixed to the upper surfaces of each of said switch units,
- said overlay sheet having twice or more the area of each said switch unit and the shape of each said unit being selected so as to permit said plurality of units to be affixed in side-by-side relationship beneath said overlay sheet, and
- said overlay sheet being provided with indicia areas at locations selected to be coordinated with switch portions of said plurality of switch units upon assembly.
2 more elements
Dependencies are inferred from the claim text.