CROSS-REFERENCE TO RELATED APPLICATION This application claims priority to provisional application Serial No. 60/566, 166, filed April 28, 2004 by inventor George Martin and entitled "System to Sense Dangerous Gases in a Vehicle Interior".

FIELD OF THE INVENTION It is possible that governing agencies may require safety devices to activate means of removing potentially dangerous gases such as certain refrigerants from a vehicle interior if they might leak from components in or on the vehicle.

BACKGROUND OF THE INVENTION Present safety systems being proposed require the use of small explosive charges to rapidly open ventilating areas if dangerous gases enter the vehicle interior. Specifically, the known proposal for removing gases from a vehicle interior is the use of "squibs" to rapidly create an opening to allow the gases to escape. Squibs are small explosive devices such as those used in airbag deployment.

SUMMARY OF THE INVENTION In accordance with one form of the invention, a dangerous gas safety system is provided for controlling a power window in a vehicle. The system includes a dangerous gas sensor to detect a presence of a dangerous gas in an interior of a vehicle; and a control operatively connected between the sensor and a power window, with the control being responsive to a signal from the sensor to activate the power window to open. In one form, the control includes an electronic switch responsive to the signal. In accordance with one feature of the invention, a method is provided for evacuating a dangerous gas from a vehicle interior. The method includes the steps of sensing a presence of a dangerous gas in an interior of a vehicle, and automatically opening a window in response to the sensing step.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a diagrammatic representation of a dangerous gas ventilation system in a vehicle interior embodying the present invention; and Fig. 2 is a schematic of one form of the system of Fig. 1 .

DESCRIPTION OF THE INVENTION This invention proposes opening the window through modification of the ordinary power window system found on many vehicles. Specifically, this invention proposes an override to the normal power window system which would open the vehicle windows when a sensor detects a dangerous gas. As seen in Fig. 1 , a dangerous gas safety system 10 is provided for controlling a power window, shown schematically at 12, in a vehicle, shown schematically at 14. The system 10 includes a dangerous gas sensor 1 6 to detect a presence of a dangerous gas in the interior 17 of the vehicle, and a control 18 operatively connected between the sensor 16 and the power window 12. The control 18 is responsive to a signal from the sensor 1 6 to activate the power window 12 to open. Shown more specifically in one form in Fig. 2, the power window 12 can be in the form of a system that includes a driver's switch 21 , a passenger switch 22, a battery 23, and a motor 24. The system 10 can include a sensor switch 25 to override the power window 1 2 to rapidly open the window for ventilating the dangerous gas. The invention can be adapted to open windows upon the signal from any sensor to ventilate the vehicle when any undesirable gas enters the vehicle.