Window wash system
First Claim
1. A window wash system for inflight cleaning of aircraft windows comprising means for storing a washing fluid and a gas therein, means for dispensing said washing fluid, first means connecting said storage means to said dispensing means, second means connecting said storage means to said dispensing means and to said first connecting means, means located within said first connecting means for controlling the flow of washing fluid from said storage means to said dispensing means and means located within said second connecting means for controlling the flow of gas from said storage means to said dispensing means and to said first connecting means whereby depending upon the condition of said pair of controlling means either said washing fluid flows through said dispensing means or said gas flows through said dispensing means and said pair of connecting means.
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Accused Products
Abstract
A window wash system for the inflight cleaning of aircraft windows having a washing fluid storage tank and nozzles adjacent the windows to be cleaned. In addition to the washing fluid within the storage tank, gas under pressure is also contained therein. Through a series of valves, either washing fluid may be dispensed through the nozzles or gas may be dispensed through the entire system for purging the system. The window wash system of this invention is capable of reliable operation under adverse conditions such as high speed flight or variable temperature and pressures.
15 Citations
10 Claims
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1. A window wash system for inflight cleaning of aircraft windows comprising means for storing a washing fluid and a gas therein, means for dispensing said washing fluid, first means connecting said storage means to said dispensing means, second means connecting said storage means to said dispensing means and to said first connecting means, means located within said first connecting means for controlling the flow of washing fluid from said storage means to said dispensing means and means located within said second connecting means for controlling the flow of gas from said storage means to said dispensing means and to said first connecting means whereby depending upon the condition of said pair of controlling means either said washing fluid flows through said dispensing means or said gas flows through said dispensing means and said pair of connecting means.
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2. A window wash system for inflight cleaning of aircraft windows as defined in claim 1 further comprising a drain connected to said controlling means located within said first connecting means.
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3. A window wash system for inflight cleaning of aircraft windows as defined in claim 2 wherein said controlling means located within said first connecting means comprises a pump and a valve, whereby said valve in one position permits the flow of the wash fluid from said storage means into said first connecting means and blocks said drain while said valve in second position prevents the flow of wash fluid from said storage means into said first connecting means and opens said drain.
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4. A window wash system for inflight cleaning of aircraft windows as defined in claim 3 further comprising means for regulating the pressure of said gas within said storage means.
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5. A window wash system for inflight cleaning of aircraft windows as defined in claim 4 wherein said controlling means located within said second connecting means comprises a valve, which at the time said valve in said first connecting means is in said one position prevents the flow of gas from said storage means into said dispensing means and said first connecting means, and, at the time said valve in said first connecting means is in said second position permits the flow of gas from said storage means into said dispensing means and said first connecting means.
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6. A window wash system for inflight cleaning of aircraft windows as defined in claim 5 further comprising means located within said storage means for heating said washing fluid.
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7. A window wash system for inflight cleaning of aircraft windows as defined in claim 6 further comprising a means located within said storage means for regulating said heating means.
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8. A window wash system for inflight cleaning of aircraft windows as defined in claim 7 wherein said dispensing means comprises a first and second nozzle.
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9. A window wash system for inflight cleaning of aircraft windows as defined in claim 8 further comprising means located within said first connecting means for regulating the flow through said first nozzle and means located within said second connecting means for regulating the flow through said second nozzle.
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10. A window wash system for inflight cleaning of aircraft windows as defined in claim 9 wherein said washing fluid is water.
Specification