Patent US3893952A successfully refreshed from Google Patents.
US3893952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst carrier in particular for appliances for removing carbon monoxide from exhaust gases of internal combustion engines
Assignee: Ostravsko-Karvinske Doly Oborove Reditelstvi
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Filing: 1972-11-14
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Granted: 1975-07-08
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Expires: 1992-11-14
Abstract
Abstract The catalyst carrier consists of heat resisting bodies of cylindrical formation, each provided with one or more throughgoing internal channels. The outer as well as the inner surface of the body is porous, consisting preferably of a ceramic mass and all surfaces are coated with a firmly adhering catalyst. The bodies with applied catalyst are loosely piled up in a chamber within a filter or exhaust silencer.
Inventors
- 👤 Josef Ryska
- 👤 Jiri Frkal
- 👤 Eduard Kolos
- 👤 Bretislav Panak
- 👤 Lubomir Vagner
- 👤 Miroslav Pospisil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:40
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/944; B01J; B01J35/00; B01J35/50; B01J35/56; F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2803; F01N3/2832; F01N3/2839; F01N3/2846; B01J35/30; B01J35/34; B01J35/36; F01N2260/00; F01N2260/04; F01N2260/08; F01N2330/00; F01N2330/08; F02; F02B; F02B1/00; F02B1/02; F02B1/04; Y; Y02; Y02A; Y02A50/00; Y02A50/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
88 words
CATALYST CARRIER FOR USE IN AN APPARATUS FOR THE REMOVAL OF CARBON MONOXIDE FROM THE EXHAUST GASES OF INTERNAL COMBUSTION ENGINES, SAID CARRIER CONSISTING OF A PLURALITY OF HEATRESISTANT POROUS CERAMIC BODIES HAVING CATALYTIC MATERIAL DEPOSITED ON ALL SURFACES THEREOF AND HAVING CATALYTIC MATERIAL IMPREGNATING THE PORES OF SAID BODIES, EACH SAID BODY HAVING A CYLILNDRICAL SHAPE AND AT LEAST ONE AXIAL INTERNAL THROUGH CHANNEL, THE WALL THICKNESS OF SAID BODY NOT EXCEEDING THE DIAMETER OF THE AXIAL THROUGH CHANNEL, SAID BODIES BEING FREELY PLACED IN SAID CARRIER.
Claim 2
Dependent Claim
88 words
CATALYST CARRIER FOR USE IN AN APPARATUS FOR THE REMOVAL OF CARBON MONOXIDE FROM THE EXHAUST GASES OF INTERNAL COMBUSTION ENGINES, SAID CARRIER CONSISTING OF A PLURALITY OF HEATRESISTANT POROUS CERAMIC BODIES HAVING CATALYTIC MATERIAL DEPOSITED ON ALL SURFACES THEREOF AND HAVING CATALYTIC MATERIAL IMPREGNATING THE PORES OF SAID BODIES, EACH SAID BODY HAVING A CYLILNDRICAL SHAPE AND AT LEAST ONE AXIAL INTERNAL THROUGH CHANNEL, THE WALL THICKNESS OF SAID BODY NOT EXCEEDING THE DIAMETER OF THE AXIAL THROUGH CHANNEL, SAID BODIES BEING FREELY PLACED IN SAID CARRIER.
Claim 3
Dependent Claim
78 words
Catalyst carrier for use in the working chambers of appliances for removing carbon monoxide from exhaust gases of internal combustion engines, comprising a plurality of porous elements, at least the majority of said elements having a cylindrical shape and an axial channel, each said element being provided with a catalyst on the outer and inner surfaces thereof, said catalyst also being impregnated in the pores of each said element, said elements being freely piled in said working chamber.
Claim 4
Dependent Claim
78 words
Catalyst carrier for use in the working chambers of appliances for removing carbon monoxide from exhaust gases of internal combustion engines, comprising a plurality of porous elements, at least the majority of said elements having a cylindrical shape and an axial channel, each said element being provided with a catalyst on the outer and inner surfaces thereof, said catalyst also being impregnated in the pores of each said element, said elements being freely piled in said working chamber.
Claim 5
Dependent Claim
23 words
Catalyst carrier according to claim 2 wherein the length of each element is equal to or less than three times its outer diameter.
Claim 6
Dependent Claim
23 words
Catalyst carrier as in claim 2, wherein the length of each element does not exceed three times the outer diameter of the body.
Claim 7
Dependent Claim
30 words
Catalyst carrier as in claim 2, wherein each element is provided with a single cylindrical through channel, whose longitudinal axis is coaxial with the longitudinal axis of the carrier body.
Claim 8
Dependent Claim
26 words
Catalyst carrier as in claim 2, wherein each element is provided with at least one through channel transverse to the longitudinal axis of the carrier body.
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) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |