Method and apparatus for developing and edge stress in a windshi

Details Method and apparatus for developing and edge stress in a windshi Method and apparatus for developing and edge stress in a windshi

1994-10-31

1997-01-07

Czaja, Donald E.

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

65106, 65104, 65103, C03B 23025

Patent

active

055912451

ABSTRACT:
The invention relates to a method and apparatus for developing an edge stress in a windshield bending furnace. Adjacent to a ring mould is located a metallic, flat extra frame in a manner that the lower surface of a bent windshield remains at a small distance from extra frame. The compression stress of glass edge can be adjusted by varying the distance of extra frame from glass and/or by varying its glass-oriented dimension.

REFERENCES:
patent: 2993303 (1961-07-01), De Vore
patent: 3092481 (1963-06-01), Carson
patent: 3102802 (1963-09-01), Carson et al.
patent: 3137558 (1964-06-01), Oberstar
patent: 3253898 (1966-05-01), Leflet
patent: 3265488 (1966-08-01), Ross et al.
patent: 4497645 (1985-02-01), Peltonen

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