Patent · US Active

Device and method for the production of a water barrier in an unhardened roof tile

US7947209B2 · kind B2 · utility

1Cited by

5References

15Claims

0Family size

Assignee

Lafarge Roofing Technical Centers GmbH · GB

Inventors

Peter Srostlik · Maintal, DE
Gunter Weiss · Offenbach, DE

Key dates

Filing date	Mar 7, 2006
Grant date	May 24, 2011
Priority date	—
Expiry date	Aug 18, 2027

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE04D1/04
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention relates to a device and a method for producing a water barrier in unsolidified roof tile preforms. The inventive device comprises a molded piece with a recess as well as a die. The molded piece is disposed above the end of a roof tile perform, whereupon all or part of the rear edge of the roof tile perform is pressed upward by means of the die. The roof tile perform is then dried.

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