Laminated windshield with defined break path

Patent metadata

Field	Value
Publication number	US-9993999-B2
Application number	US-201615217422-A
Country	US
Kind code	B2
Filing date	Jul 22, 2016
Priority date	Jul 22, 2016
Publication date	Jun 12, 2018
Grant date	Jun 12, 2018

Abstract

A laminated windshield includes an outer glass layer, an inner glass layer and an intermediate plastic layer or interlayer that prevents the windshield from shattering. The laminated windshield also includes a channel or break line engineered to break outward toward the outer glass layer thereby providing an emergency escape path from the interior of a motor vehicle.

First claim

What is claimed:

1. A laminated windshield, comprising:
an outer glass layer;
an inner glass layer; and
an intermediate interlayer wherein said outer glass layer and said intermediate interlayer include a break line engineered to break outward toward said outer glass layer.

2. The laminated windshield of claim 1 , including a top edge and a bottom edge, said break line extending from said top edge to said bottom edge.

3. The laminated windshield of claim 2 , wherein said break line comprises a channel in said outer glass layer and said intermediate interlayer.

4. The laminated windshield of claim 3 , further including a transparent filler in said channel.

5. The laminated windshield of claim 4 , wherein said transparent filler is a plastic material.

6. The laminated windshield of claim 4 , wherein said transparent filler is selected from a group consisting of polyvinyl butyral, polycarbonate and mixtures thereof.

7. The laminated windshield of claim 4 , wherein said channel has a width of between 0.1 mm and 0.7 mm.

8. The laminated windshield of claim 1 , wherein said break line comprises a channel in said outer glass layer and said intermediate interlayer.

9. The laminated windshield of claim 8 , further including a transparent filler in said channel.

10. The laminated windshield of claim 9 , wherein said transparent filler is a soft plastic material.

11. The laminated windshield of claim 9 , wherein said transparent filler is selected from a group consisting of polyvinyl butyral, polycarbonate and mixtures thereof.

12. The laminated windshield of claim 9 , wherein said channel has a width of between 0.1 mm and 0.7 mm.

13. A laminated windshield, comprising:
an outer glass layer;
an inner glass layer; and
an intermediate interlayer wherein a break line extends at least partially through said outer glass layer, said break line being a channel engineered to break outward toward said outer glass layer, and said channel being filled with a transparent filler.

14. The laminated windshield of claim 13 , wherein said break line extends completely through said outer glass layer to said intermediate interlayer.

15. The laminated windshield of claim 13 , wherein said break line extends completely through said outer glass layer and at least partially through said intermediate interlayer.

16. The laminated windshield of claim 13 , wherein said break line extends completely through said outer glass layer and said intermediate interlayer to said inner glass layer.

Assignees

• Ford Global Tech Llc

Inventors

• Alonso Vazquez Liliana
• Fernandez Francisco
• Alvarez Ruiz Raul Ezequiel

Classifications

• B32B17/10064 Primary

  comprising at least two glass sheets, only one of which being an outer layer · CPC title

• B60J1/02

  arranged at the vehicle front {, e.g. structure of the glazing, mounting of the glazing (on windscreen mounted antenna wire H01Q1/1271)} · CPC title

• B32B17/06

  comprising glass as the main or only constituent of a layer, next to another layer of a specific {material} · CPC title

• B32B17/10293

  Edge features, e.g. inserts or holes · CPC title

• B32B17/10761

  containing vinyl acetal · CPC title