Patent US4792435A successfully refreshed from Google Patents.
US4792435A
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Oxygen generating system
Assignee: Nakajima Dokosho Co Ltd
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Filing: 1988-03-24
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Granted: 1988-12-20
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Expires: 2008-03-24
Abstract
Abstract An oxygen generating system for continuously generating oxygen gas by the catalytic decomposition of an aqueous hydrogen peroxide, includes a catalyst having a platinum group catalyst component carried on a highly porous sintered ceramic support of a large pore size and a reaction chamber for accommodating the catalyst. The system further includes a control device for controlling the operation of the hydrogen peroxide supplying based on a detection signal from a pressure sensor for detecting the pressure of the generated oxygen gas. The oxygen generating system is compact and reduced in weight due to the catalytic decomposition of hydrogen peroxide at high concentration, which can be carried out effectively and safely under an increased temperature.
Inventors
- 👤 Masahiko Nakajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:16
CPC Classifications
A; A62; A62B; A62B21/00; C; C01; C01B; C01B13/00; C01B13/02; C01B13/0203; C01B13/0211; C01B13/0214
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
An oxygen generating system for continuously generating oxygen gas by the exothermic catalytic decomposition of an aqueous hydrogen peroxide comprising: a catalyst having a platinum group catalyst component carried on a highly porous sintered ceramic support of a large pore size; a reaction chamber including means for preheating said chamber and having a heat insulating circumferential wall having the catalyst held therewithin, said heat insulating circumferential wall thermally insulating a reaction region from an external atmosphere, means for supplying highly concentrated aqueous hydrogen peroxide from a reservoir to said reaction chamber at a restricted and controlled flow rate; and a control device having a pressure sensor for detecting the pressure of the oxygen gas generated through the exothermic decomposition of the aqueous hydrogen peroxide by said catalyst and means for controlling the operation of said means for supplying the aqueous hydrogen peroxide based on detection signal from said pressure sensor whereby said predetermined temperature is maintained.
Claim 2
Dependent Claim
156 words
An oxygen generating system for continuously generating oxygen gas by the exothermic catalytic decomposition of an aqueous hydrogen peroxide comprising: a catalyst having a platinum group catalyst component carried on a highly porous sintered ceramic support of a large pore size; a reaction chamber including means for preheating said chamber and having a heat insulating circumferential wall having the catalyst held therewithin, said heat insulating circumferential wall thermally insulating a reaction region from an external atmosphere, means for supplying highly concentrated aqueous hydrogen peroxide from a reservoir to said reaction chamber at a restricted and controlled flow rate; and a control device having a pressure sensor for detecting the pressure of the oxygen gas generated through the exothermic decomposition of the aqueous hydrogen peroxide by said catalyst and means for controlling the operation of said means for supplying the aqueous hydrogen peroxide based on detection signal from said pressure sensor whereby said predetermined temperature is maintained.
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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) | 1991-12-20 | 1992-06-20 | 1992-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-20 | 1996-06-20 | 1996-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-20 | 2000-06-20 | 2000-12-20 | $7700.00 | Window Closed / Lapsed |