Back to results
US 4,927,688 AGranted
Cast-iron element
AssigneeEisengiesserei Monforts GmbH & Co.
InventorsRudi Hass, Georg Jansen, Wilhelm Kallen
Life of this patent
Estimating the term…
Abstract
A cast-iron element with a non-iron interior area utilizes a molding core formed of a glass material, which may be tubular or solid and may, as desired, be entirely enclosed within the casting.
Claims3
A cast-iron element having an entirely enclosed interior area occupied by a core of glass conforming to said interior area.
An elongated cast-iron element having an elongated interior area occupied by an elongated core of glass conforming to said interior area, said glass core projecting from said elongated element at at least one end thereof.
Dependencies are inferred from the claim text.