EP 0163778 B1 19890322 - EXTENSIBLE BELT AND METHOD OF MANUFACTURING SAME
Title (en)
EXTENSIBLE BELT AND METHOD OF MANUFACTURING SAME
Publication
Application
Priority
DE 3421146 A 19840607
Abstract (en)
[origin: ES8705313A1] A stretchable belt, such as for safety belt restraint systems in vehicles, includes a base material and at least one additional material having a different stress-stretch curve. By providing a base material with higher deformability than the additional material the stress-stretch curve of the belt has a first steeply rising portion where the load is primarily transmitted to the additional material. At a given load point, the additional material abruptly tears, and the load is transmitted to the base material. Thereafter, the stress versus stretch curve continues at a substantially lower angle. In this manner, the belt absorbs a maximum amount of energy for a given maximum load and maximum stretch. The belt may be formed from a single type of raw material, mechanically or thermally treating it to provide different stress versus stretch characteristics for the base material and the additional material.
IPC 1-7
IPC 8 full level
B60R 22/12 (2006.01); A62B 35/00 (2006.01); D03D 1/00 (2006.01); D03D 15/00 (2006.01)
CPC (source: EP US)
D03D 1/0005 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE FR GB IT NL SE
DOCDB simple family (publication)
EP 0163778 A1 19851211; EP 0163778 B1 19890322; DE 3421146 A1 19851212; DE 3477408 D1 19890427; ES 539385 A0 19870501; ES 8705313 A1 19870501; JP S60261474 A 19851224; US 4662487 A 19870505
DOCDB simple family (application)
EP 84116493 A 19841229; DE 3421146 A 19840607; DE 3477408 T 19841229; ES 539385 A 19850107; JP 10167185 A 19850515; US 73802085 A 19850524