Vertically adjustable side glazing for motor vehicles

Details Vertically adjustable side glazing for motor vehicles Vertically adjustable side glazing for motor vehicles

1991-08-27

1993-03-30

Ryan, Patrick J.

Stock material or miscellaneous articles

Composite

Of quartz or glass

428426, 4284256, 428 30, 428454, 296 83, 296 841, B32B 906

Patent

active

051983044

ABSTRACT:
A vertically adjustable composite motor vehicle side glazing, particularly a door window glazing, is made from composite glass including two 1.5 to 3.5 mm thick thermally tempered individual glazings with a thermoplastic intermediate layer. Each individual glazing has in the marginal area tensile stresses in the core, which in the case of a glazing thickness of 2 mm amount to 54 to 76 MN/m.sup.2 and for a glazing thickness of 3 mm amount to 46.7 to 71.2 MN/m.sup.2. In the central zone within the marginal area the individual glazings have tensile stresses in the core, which in the case of a glazing thickness of 2 mm amount to 38 to 67 MN/m.sup.2, while for a glazing thickness of 3 mm amount to 33 to 60 MN/m.sup.2. Such composite glazings have high strength in the marginal area and a low strength in the central zone. Therefore they have excellent characteristics both from the static standpoint and from that of accident safety.

REFERENCES:
patent: 3558415 (1969-01-01), Rieser
patent: 3592726 (1969-11-01), Blizard

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