US 4,306,140 AGranted

Insulative multi-pane heated window structure

AssigneeAnthony's Manufacturing Company, Inc.

InventorMichael E. Stromquist

Life of this patent

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Abstract

A structure adapted for use in a door of a refrigerated compartment. The door may include a plurality of panes of glass, a plurality of spacers for spacing the plurality of panes of glass so as to form an air space between each pair of panes of glass, a conductive coating applied to one surface of one of the panes of glass facing into the air space between the panes of glass, and an electrical circuit connected to the conductive coating on the coated surface of the pane of glass. The electrical circuit includes a portion which could otherwise be exposed to physical contact through the air space in the event of breakage of the coated or opposing pane of glass. The structure includes a portion for blocking physical contact with the portion of the electrical circuit which could otherwise be exposed. The structure further includes portions for connecting with the spacers in the door for securing the structure in the door.

Claims7

Dependent claims

An insulative multi-pane heated window structure interposable between a colder region and a warmer region to permit vision therebetween, comprising:

a first glass pane fabricated from material adapted to shatter into small pieces upon breaking thereof and having outer and inner surfaces, said first pane outer surface being positioned in normal use proximate the warmer region;
a second glass pane;
spacer means for maintaining said first and second glass panes in a substantially parallel, spaced relationship so as to form an insulating air space therebetween;
a substantially transparent electrically conductive heating film bonded to the inner surface of said first pane so as to fracture therewith;
a pair of spaced bus bars bonded to the inner surface of said first pane so as to fracture therewith, one of said bus bars being in electrical contact with one of the edges of said film, the other of said bus bars being in electrical contact with the opposite edge of said film;
electrical contact means for connecting one of said bus bars to a source of electrical power;
and
shielding means positioned within the insulating air space for preventing physical contact with the portion of the assembly proximate the electrical contact means in the event of breakage of said first pane.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/094,156Filed 14 Nov 1979
Granted: 15 Dec 1981
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

E06B 3/6715
Characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light: specially adapted for…
H05B 3/84
Ohmic-resistance heating: heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows,…
H05B 2203/016
Aspects relating to Ohmic resistive heating covered by group H05B3/00: heaters using particular connecting means
E06B
Fixed or movable closures for openings in buildings, vehicles, fences or like