Fireproof glasswork

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1976-05-21

1978-01-31

Dixon, Jr., William R.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428332, 428426, 428427, 428428, 428432, 428424, 428425, 428913, 428920, B32B 1706

Patent

active

040716490

ABSTRACT:
A fire screening glazing panel and a method of producing same. A panel is formed of at least two structural plies and at least one of which is a vitreous sheet, layers of heat convertible thermally insulating barrier forming material are placed on a face of each ply, and a plastic membrane is sandwiched between the layered plies, the layers being adjacent the plastic membrane. When formed in this way, the plastic membrane makes the transfer of heat from one barrier-forming material layer to the other more uniform and prolongs the time taken for the vitreous sheet to reach a given temperature, while the panel as a whole is in itself sufficient to prevent or delay propagation of fire across an opening closed by the panel. Protective strata may be applied to each vitreous ply on its face that will be in contact with the barrier forming material layer to inhibit interaction between the ply and the layer and preserve the transparency (if the ply is transparent) of the ply over an extended period of time.

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patent: 3457138 (1969-07-01), Miller
patent: 3508810 (1970-04-01), Baltzer
patent: 3537944 (1970-11-01), Grubb et al.
patent: 3539442 (1970-11-01), Buckley et al.
patent: 3582455 (1971-06-01), DeLap et al.
patent: 3630809 (1971-12-01), Edwards
patent: 3640837 (1972-02-01), Gaeth et al.
patent: 3793105 (1974-02-01), Birchall et al.
patent: 3838091 (1974-09-01), Kanno et al.
patent: 3974316 (1976-08-01), Jacquemin et al.
patent: 3997700 (1976-12-01), Jacquemin et al.

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