Patent · US Expired

Building element

US3978633A · kind A · utility

13Cited by

4References

7Claims

0Family size

Assignee

Jenaer Glaswerk, Schott & Gen. · DE

Inventors

Herwig Scheidler · Mainz, DE
Klaus Kristen · Wiesbaden, DE

Key dates

Filing date	Jan 14, 1975
Grant date	Sep 7, 1976
Priority date	—
Expiry date	Jan 14, 1995

Classification

Technology area (CPC H)Electricity
CPC primaryH05B3/76
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A construction element consisting of a sheet of material having plane front and back surfaces is joined to a base by an attachment means secured to the back surface of the sheet adjacent to the edge of the sheet. The attachment means comprises a frame having an aperture means opening away from the back surface of the sheet for receiving threaded elements and securing the sheet to the base and includes a homogeneous, permanently resilient substance positioned between the frame and the sheet having sufficient flexibility to allow for the difference in thermal expansion between the frame and the sheet and having sufficient tensile strength to hold the sheet to the frame.

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