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US 4,792,491 AGranted
Gaskets
AssigneeT&N Materials Research Limited
InventorsAlan Atkinson, Katryna Dearden, Janet Lancaster
Life of this patent
Estimating the term…
Abstract
Graphite gaskets with an improved release characteristic are treated with a finely powdered release agent such a graphite powder which is then pressed into the gasket surface.
Claims10
A method of making a gasket from exfoliated graphite, including the steps of:
- (a) coating the gasket with a finely powdered exfoliated graphite release agent followed by
- (b) pressing the coating with pressure sufficient to bond the release agent into the surface of the gasket, and
- simultaneously embossing the coated gasket to form a pattern of relatively raised regions surrounded by predominantly interconnected depressed regions.
Dependencies are inferred from the claim text.