Ventilation – Vehicle – Condensation preventer
Reexamination Certificate
1999-07-14
2001-01-09
Joyce, Harold (Department: 3744)
Ventilation
Vehicle
Condensation preventer
Reexamination Certificate
active
06171184
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates generally to a heated window system and, more particularly, to a system for circulating warm air through interlayers of air in automobile windows.
When the windows of an automobile are covered with frost or frozen precipitation, a person must scrape the windows prior to driving. Most automobiles utilize a defroster which forces warm air through vents in the dashboard onto the interior surface of the front windshield for the purpose of melting frost, ice, or snow from the windshield. Some vehicles also include a rear defroster in which a series of thin wires coupled to a vehicle power source are embedded in the rear windshield for melting ice therefrom. Although assumably effective in operation, existing systems do not provide uniform heating of all the windows of the automobile or partially obstruct a driver's view of the road.
Thus, it is desirable to have a heating system which uniformly heats all the windows of a vehicle. It is further desirable to have a heating system which circulates warm air through interconnected window interlayer air spaces as well as into the passenger compartment of the vehicle.
SUMMARY OF THE INVENTION
In response thereto, I have invented a window heating system for a vehicle which includes a front windshield assembly having first and second spaced-apart panes of glass with an interlayer of air therebetween. A frame encircles the panes and maintains the spacing within the air space. An inlet extends through the bottom wall of the windshield frame to allow entry of air into the interlayer. An outlet extends through a side wall of the windshield frame for discharging air from the interlayer.
The system further includes a plurality of vehicle window assemblies that may be placed about the vehicle, e.g. on each side door. Each vehicle window assembly includes first and second spaced-apart panes with an interlayer of air space therebetween. A frame encircles the window assembly panes. An inlet extends through a first side of the vehicle window frame and an outlet extends through a second side thereof for entry and discharge of air, respectively. The inlets and outlets of the windshield assembly and vehicle window assemblies are positioned such that an air stream may pass therebetween through channels extending through vehicle support posts. The system may also include a rear windshield having a construction substantially similar to the front windshield. A vacuum-type blower is mounted in the trunk of the vehicle for drawing air through the windshield and window assemblies.
It is therefore a general object of this invention to provide a heating system for automobile windows which uniformly defrosts all of the windows of the automobile.
Another object of this invention is to provide a heating system, as aforesaid, which heats an interlayer of air between the dual panes of glass of each vehicle window.
Still another object of this invention is to provide a heating system, as aforesaid, in which the interlayer of each window communicates with the interlayer of the next adjacent window.
A further object of this invention is to provide a heating system, as aforesaid, which circulates air through each window from a front defroster blower to a rear vacuum type blower.
A still further object of this invention is to provide a heating system, as aforesaid, which can heat the passenger compartment of the vehicle with the warm air previously drawn through the window interlayers.
Yet another object of this invention is to provide a heating system, as aforesaid, in which an air stream is sealed within each window interlayer.
Other objects and advantages of this invention will become apparent from the following description taken in connection with the accompanying drawings, wherein is set forth by way of illustration and example, an embodiment of this invention.
REFERENCES:
patent: 2389704 (1945-11-01), Villani
patent: 2445413 (1948-07-01), Webster
patent: 3715966 (1973-02-01), Miettinen
patent: 3794809 (1974-02-01), Beck et al.
patent: 3947618 (1976-03-01), Gruss
patent: 4010304 (1977-03-01), Cohen
patent: 4820902 (1989-04-01), Gillery
patent: 5070230 (1991-12-01), Osada et al.
patent: 5466911 (1995-11-01), Spagnoli et al.
Boles Derek S.
Chase & Yakimo, LC
Joyce Harold
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