US4850859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid fueled hydrogen heater
Assignee: RTX Corp
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Filing: 1988-09-30
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Granted: 1989-07-25
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Expires: 2008-09-30
Abstract
Abstract An apparatus for heating air using a regenerable hydrogen containing liquid fuel. The apparatus includes a hydrogen reduction catalyst, a semipermeable membrane through which hydrogen may pass and an oxidation catalyst which forms a combustion area. The hydrogen reduction catalyst is proximate to the combustion area. A displacement means transfers the hydrogen containing liquid fuel to the reduction catalyst where combustion heat decomposes the liquid fuel into hydrogen and decomposition products. The hydrogen passes through the semipermeable membrane mixes with air and is combusted at the oxidation catalyst. The decomposition products are transferred to a condensing means whereby they are condensed.
Inventors
- 👤 Arthur S. Kesten
- 👤 H. Ezzat Khalifa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:23
CPC Classifications
F; F23; F23C; F23C13/00; C; C01; C01B; C01B3/00; C01B3/0005; C01B3/001; C01B3/0015; F24; F24H; F24H3/00; F24H3/02; F24H3/04; F24H3/0488; Y; Y02; Y02B; Y02B30/00; Y02E; Y02E60/00; Y02E60/30; Y02E60/32; Y02P; Y02P20/00; Y02P20/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
123 words
An apparatus for heating comprising a. a fuel storage means including a hydrogen containing liquid fuel; b. a wall means including a hydrogen reduction catalyst for decomposition of the fuel into hydrogen and other decomposition products, a semipermeable membrane through which hydrogen may pass and an oxidation catalyst thereon forming a combustion area for combustion of the hydrogen; c. a displacement means for transferring said fuel to said reduction catalyst, said reduction catalyst being proximate to said combustion area whereby combustion heat effects the release of hydrogen from the fuel; d. means for controllably supplying air to said combustion area; e. a condensing means for condensing said other decomposition products; and f. means for transferring said other decomposition products to said condensing means.
Claim 2
Independent Claim
123 words
An apparatus for heating comprising a. a fuel storage means including a hydrogen containing liquid fuel; b. a wall means including a hydrogen reduction catalyst for decomposition of the fuel into hydrogen and other decomposition products, a semipermeable membrane through which hydrogen may pass and an oxidation catalyst thereon forming a combustion area for combustion of the hydrogen; c. a displacement means for transferring said fuel to said reduction catalyst, said reduction catalyst being proximate to said combustion area whereby combustion heat effects the release of hydrogen from the fuel; d. means for controllably supplying air to said combustion area; e. a condensing means for condensing said other decomposition products; and f. means for transferring said other decomposition products to said condensing means.
Claim 3
Dependent Claim
14 words
The apparatus as recited in claim 1 wherein said displacement means comprises a wick.
Claim 4
Dependent Claim
22 words
The apparatus as recited in claim 2 wherein said wick has perforations for transferring said other decomposition products to said condensing means.
Claim 5
Dependent Claim
13 words
The apparatus as recited in claim 1 wherein said fuel comprises methyl cyclohexane.
References Cited (Backward Citations)
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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) | 1992-07-24 | 1993-01-23 | 1993-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-24 | 1997-01-23 | 1997-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-24 | 2001-01-23 | 2001-07-25 | $7700.00 | Window Closed / Lapsed |