Patent · US Expired

Method and oven for manufacturing a light construction element, particularly a cover plate

US4493805A · kind A · utility

0Cited by

3References

12Claims

0Family size

Assignees

Keller Holding GmbH · DE
Gustav-Adolf Sporkenbach · DE

Inventors

Gustav-Adolf Sporkenbach · Wattenscheid, DE
Dieter Suetterlin · Frick, CH

Key dates

Filing date	Dec 20, 1982
Grant date	Jan 15, 1985
Priority date	—
Expiry date	Dec 20, 2002

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE04C1/40
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

The method of moldless manufacturing light construction elements comprises a first step of mold-free shaping a blank comprising a first layer of an expandable first clay material and a second layer of a non-expandable second clay material. The blanks are supported at their second layers and conveyed through an oven with radiation heating of the blanks at least from above, so that the first layer progressively expands as the blanks are conveyed through the oven. After cooling, the expanded blank is further processed to assume the required final dimensions.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.