Patent · US Expired

Door especially for motor vehicles

US4428157A · kind A · utility

16Cited by

5References

7Claims

0Family size

Assignee

Messerschmitt Bolkow Blohm GmbH · DE

Inventors

Ernst Engelsberger · Glonn, DE
Ralf-Thilo Schulz · Putzbrunn, DE
Franz Drachenberg · Baldham, DE

Key dates

Filing date	Dec 28, 1981
Grant date	Jan 31, 1984
Priority date	—
Expiry date	Dec 28, 2001

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60J5/045
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

The present door, such as a motor vehicle door, has a central member extending from the hinges to the lock. The central member carries an interior and an exterior door panel. The central member is a body of compound synthetic hard foam material having embedded therein an energy absorbing element. Additionally, the central member is encased in two shells. This structure is lightweight and yet stiff against shearing and torsion loads as well as impact forces.

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