Patent US3901444A successfully refreshed from Google Patents.
US3901444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window wash system
Assignee: United States Department of the Air Force
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Filing: 1974-09-25
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Granted: 1975-08-26
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Expires: 1994-09-25
Abstract
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.
Inventors
- 👤 Dale E Maltbie
- 👤 Glenn W Albright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:14
CPC Classifications
B; B60; B60S; B60S1/00; B60S1/02; B60S1/54; B60S1/46; B60S1/48; B60S1/481; B60S1/50; B60S1/52
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
137 words
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.
Claim 2
Dependent Claim
137 words
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.
Claim 3
Dependent Claim
30 words
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.
Claim 4
Dependent Claim
82 words
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.
Claim 5
Dependent Claim
29 words
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.
Claim 6
Dependent Claim
96 words
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.
Claim 7
Dependent Claim
28 words
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.
Claim 8
Dependent Claim
29 words
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.
Claim 9
Dependent Claim
25 words
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.
Claim 10
Dependent Claim
48 words
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.
Claim 11
Dependent Claim
21 words
A window wash system for inflight cleaning of aircraft windows as defined in claim 9 wherein said washing fluid is water.
References Cited (Backward Citations)
US3212518A
Cited
US3423025A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |