Back to results
US 4,659,056 AGranted
Electrically heated light-weight concrete mold
AssigneeSociete Nationale Industrielle et Aerospatiale
InventorJean A. Michaud-Soret
Life of this patent
Estimating the term…
Abstract
A mold having a concrete base and a mold cavity member lined with sheet metal. Adjacent the sheet metal are electric heating means and between the electric heating means and the concrete base is a light-weight concrete insulating layer.
Claims4
A concrete mould with heating elements for producing moulded pieces with large dimensions, particularly great length, of a composite material, the concrete mould comprising:
- a reinforced concrete support:
- a mass of lightened thermally insulating concrete, adjacent to and supported by said reinforced concrete support, including a filler of cellular glass balls and glass microspheres divided within said thermally insulating concrete, the thermally insulated concrete having an inner surface with an impression shape contour of the piece to be moulded;
- a plurality of electrical resistence heating elements on said surface;
- and, a thin sheet metal layer over said elements, said thin sheet metal extending along the contour of said impression shape.
1 more element
Dependencies are inferred from the claim text.