US4240798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for reducing ozone
Assignee: Linde Sverige AB
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Filing: 1979-07-05
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Granted: 1980-12-23
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Expires: 1999-07-05
Abstract
Abstract In the decomposition of ozone in aircraft, the ozone level in an airflow upstream of the aircraft cabin is measured and a signal generated in accordance with the sensed level. This signal is amplified to a given value and a valve is opened or closed in response thereto. Connected to the valve is a source of nitric oxide under pressure. When the valve is opened a measured quantity of nitric oxide is dispensed to a location in said airflow remote from said ozone monitoring device.
Inventors
- 👤 Rurik Wendelin
- 👤 Ladislav Sipek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:06
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/66; B01D53/30; Y; Y02; Y02A; Y02A50/00; Y02A50/20; Y10; Y10T; Y10T436/00; Y10T436/20; Y10T436/206664
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
109 words
A method of decomposing ozone in aircraft, comprising (a) measuring by means of an ozone-monitoring device the level of ozone at a first location upstream of a second location in a flow of air passing to the cabin of said aircraft; (b) transmitting a signal from said monitoring device to an amplifier when the level of ozone in said first location is above a first limit level; (c) amplifying said signal to a given value; (d) transmitting said amplified signal to a valve means arranged to open in reference to said amplified signal, and (e) feeding nitric oxide through said valve means to said second location in said air-flow.
Claim 2
Independent Claim
109 words
A method of decomposing ozone in aircraft, comprising (a) measuring by means of an ozone-monitoring device the level of ozone at a first location upstream of a second location in a flow of air passing to the cabin of said aircraft; (b) transmitting a signal from said monitoring device to an amplifier when the level of ozone in said first location is above a first limit level; (c) amplifying said signal to a given value; (d) transmitting said amplified signal to a valve means arranged to open in reference to said amplified signal, and (e) feeding nitric oxide through said valve means to said second location in said air-flow.
Claim 3
Independent Claim
121 words
A method of controlling ozone-concentrations in aircraft, comprising (a) measuring by means of an ozone-monitoring device the level of ozone in an air flow at a first location therein downstream of a second location therein, said monitoring device being arranged to generate signals of given values in dependence upon the various levels of ozone measured by said device above a given level; (b) transmitting said signal to an amplifier; (c) amplifying said signal to a value corresponding to the value of the signal received from the monitor; (d) transmitting said modified signal to a valve means whose through-put is regulated by signals of respective values, and (e) feeding nitric oxide through said valve means to said second location in said air-flow.
Claim 4
Independent Claim
121 words
A method of controlling ozone-concentrations in aircraft, comprising (a) measuring by means of an ozone-monitoring device the level of ozone in an air flow at a first location therein downstream of a second location therein, said monitoring device being arranged to generate signals of given values in dependence upon the various levels of ozone measured by said device above a given level; (b) transmitting said signal to an amplifier; (c) amplifying said signal to a value corresponding to the value of the signal received from the monitor; (d) transmitting said modified signal to a valve means whose through-put is regulated by signals of respective values, and (e) feeding nitric oxide through said valve means to said second location in said air-flow.
Claim 5
Independent Claim
99 words
An apparatus for decomposing ozone in aircraft, comprising an ozone monitoring means arranged in a flow of air of the cabin of said aircraft and adapted to generate a signal when the level of ozone monitored is above a given level; an amplifier connected to said ozone monitoring means and arranged to amplify said signal to a given value; valve means arranged to be opened and closed in response to the value of said signal; container means containing nitric oxide connected to said valve; and dispensing means for dispensing nitric oxide to a location upstream of said monitoring means.
Claim 6
Independent Claim
99 words
An apparatus for decomposing ozone in aircraft, comprising an ozone monitoring means arranged in a flow of air of the cabin of said aircraft and adapted to generate a signal when the level of ozone monitored is above a given level; an amplifier connected to said ozone monitoring means and arranged to amplify said signal to a given value; valve means arranged to be opened and closed in response to the value of said signal; container means containing nitric oxide connected to said valve; and dispensing means for dispensing nitric oxide to a location upstream of said monitoring means.
Claim 7
Dependent Claim
28 words
An apparatus according to claim 3, wherein a safety valve means having a fixed throughput is arranged between said valve means and said container means containing nitric oxide.
Claim 8
Independent Claim
113 words
An apparatus for decomposing ozone in aircraft, comprising an ozone monitoring device arranged in a flow of air to the cabin of said aircraft and adapted to generate signals of different levels in response to the ozone levels detected in said airflow above a given level; amplifying means arranged to amplify respective signals to respective levels of given magnitudes; valve means arranged to be regulated progressively by the respective amplified signals; container means containing nitric oxide connected to said valve means; a gas dispensing means arranged to dispense said nitric oxide to a location downstream of said ozone monitoring device in quantities corresponding to the level of the signals sent to said amplifier.
Claim 9
Independent Claim
113 words
An apparatus for decomposing ozone in aircraft, comprising an ozone monitoring device arranged in a flow of air to the cabin of said aircraft and adapted to generate signals of different levels in response to the ozone levels detected in said airflow above a given level; amplifying means arranged to amplify respective signals to respective levels of given magnitudes; valve means arranged to be regulated progressively by the respective amplified signals; container means containing nitric oxide connected to said valve means; a gas dispensing means arranged to dispense said nitric oxide to a location downstream of said ozone monitoring device in quantities corresponding to the level of the signals sent to said amplifier.
Claim 10
Dependent Claim
41 words
An apparatus according to claim 5, wherein a safety valve means is arranged between said valve means and said container means containing nitric oxide, said safety valve having a fixed throughput corresponding to the maximum intended throughput of said valve means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-23 | 1984-06-23 | 1984-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-23 | 1988-06-23 | 1988-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-23 | 1992-06-23 | 1992-12-23 | $7700.00 | Window Closed / Lapsed |