Electrical insulating sheet material and electrical winding made therefrom
AssigneeGeneral Electric Company
InventorsWilliam H. Gottung, Kevork A. Torossian
Life of this patent
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Abstract
Electrical insulating sheet material characterized by a coating of thermosetting resinous adhesive material distributed over two sides of a sheet of aramid paper, in combination with a pattern of pressure sensitive adhesive material applied to one side of the aramid paper sheet.
Claims8
An electrical insulating sheet material comprising a sheet of aramid paper, a coating of thermosetting resinous adhesive material in a solid but heat bondable state and substantially uniformly distributed over at least one side of the aramid paper sheet, and a pressure sensitive adhesive material applied in a pattern to at least one side of the resin-coated aramid paper sheet, said pattern being of predetermined configuration to limit to a predetermined maximum distance the spacing between any point on the sheet not covered with pressure sensitive adhesive material and the closest point in the pattern of pressure sensitive adhesive material, said pressure sensitive adhesive material having a predetermined peel strength sufficient to hold the paper to a surface before the thermosetting adhesive is bonded thereto.
Dependencies are inferred from the claim text.