US3589853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic wall
Assignee: Perodo SA Franc
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Filing: 1968-02-12
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Granted: 1971-06-29
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Expires: 1988-02-12
Abstract
Abstract A catalytic wall adapted to be cross through by a gaseous flow from an internal face to an external face in order to facilitate the reaction between said gaseous flow and a gaseous medium bathing the external face, comprising an asbestos based fabric support carrying on the input face a quantity of catalyst smaller than the one provided on the face bathing in said gaseous medium. Such a wall can be used in a catalytic heater apparatus.
Inventors
- 👤 Raymond J Guasco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:44
CPC Classifications
B; B01; B01J; B01J35/00; B01J35/50; B01J35/58; F; F23; F23D; F23D99/00; F23D99/002; F23D99/004; F23D2206/00; F23D2206/0057; F23D2206/0063
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
29 words
A catalytic wall according to claim 1, wherein said quantity of platinum of said second deposit is about 50 percent of the quantity of platinum of said first deposit.
Claim 2
Dependent Claim
40 words
A catalytic wall according to claim 1, wherein said first deposit covers the entire face of the wall bathed by said gaseous medium, and said second deposit covers no more than 80 percent of the opposite face of the wall.
Claim 3
Dependent Claim
30 words
A catalytic wall according to claim 3, wherein said second deposit covers about 50 percent of the face of the wall opposed to the one bathed by said gaseous medium.
Claim 4
Dependent Claim
33 words
A catalytic wall according to claim 1, wherein the quantity of platinum of said second deposit is greater in the zones where the gaseous flow is relativEly smaller than in the other zones.
Claim 5
Dependent Claim
30 words
A catalytic wall according to claim 5, wherein said second deposit covers the upper portion of the face of the wall opposite to the one bathed by said gaseous medium.
Claim 6
Dependent Claim
32 words
A catalytic wall according to claim 1, wherein said face of the wall bathed by said gaseous medium is brushed for bristling up its fibers before the application of said first deposit.
Claim 7
Dependent Claim
58 words
A catalytic wall according to claim 1 said wall being arranged in a substantially vertical position and wherein said gaseous flow is a gas heavier than air and wherein the platinum of said second deposit is applied on the face opposed to that bathed by said gaseous medium only at the upper portion of said substantially vertical wall.
Claim 8
Dependent Claim
94 words
A catalytic wall for improving the reaction between a combustible gas and atmospheric air in a catalytic heater means, said wall comprising a gas pervious fabric having inner and outer surfaces, a first deposit of platinum saturating said outer surface so that additional platinum does not increase the catalytic action, a second deposit of platinum on said inner surface, said second deposit being smaller than said first deposit so that said combustible gas flows through said wall from said inner surface to said outer surface and reacts with the air at said outer surface.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |