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US3853483A Expired / Lapsed US ⏱️ 0.0 years remaining

Exhaust gas catalytic treatment system

Assignee: Air Products and Chemicals Inc
•
Filing: 1972-10-18
•
Granted: 1974-12-10
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Expires: 1992-10-18
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Abstract

Abstract In a converter for the catalytic treatment of engine exhaust gases which includes an inlet conduit, a catalyst chamber, a particulate catalyst and an outlet conduit, the improvement comprises a sock of a thermally destructible material which contains the catalyst and is mountable within the chamber. The sock becomes completely decomposed and eliminated in situ during the initial operation of the converter.

Inventors

  • 👤 W Cross

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 23:25
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/44; F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2803; F01N3/2832; F01N3/2839; F01N3/2846; B01J35/00; B01J35/50; B01J35/51; F01N2330/00; F01N2330/08; F01N2370/00; F01N2370/02; F01N2370/04; F01N2450/00; F01N2450/04; F01N2450/30; F01N2470/00; F01N2470/18; F01N2510/00; F01N2510/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49345; Y10T29/4981; Y10T292/00; Y10T292/23; Y10T292/237

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 200 words
A CONVERTER CONTAINING A BED OF PARTICULATE CATALYST FOR CATALYTIC TREATMENT OF ENGINE EXHAUST GASES COMPRISING A CATALYST CHAMBER HAVING A SUBSTANTIALLY VERTICAL SIDEWALL AND AN OPENING TO RECEIVE SAID CATALYST, A REMOVBLE COVER PLATE MOUNTED OVER THE OPENING IN SAID CHAMBER, CLOSURE CLAMP CLAMPED TO SAID SIDEWALL OF SAID CONVERTER; MEANS ATTACHED BETWEEN SAID CLOSURE CLAMP AND SAID COVER PLATE FOR TIGHTENING SAID PLATE OVER SAD OPENING; SAID ELONGATED, PERFORATED ANNULAR CARTRIDGE MOUNTED WITHIN SAID CHAMBER HAVING AN INLET PERFORATE WALL, AN OUTLET PERFORATE WALL AND AN OPENING AT ONE END THEREOF IN ALIGNMENT WITH THE OPENING IN SAID CHAMBER; AND THEREMALLY DESTRUCTIBLE, POROUS SOCK CONTAINING SAID CATALYST BED IN THE SAME GEOMETRIC CONFIGURATION AS SAID ANNULAR CARTRIDGE SO THAT SAID SOCK IS INSERTABLE THROUGH THE OPENING IN SAID CHAMBER AND INTO THE ANNULUS OF SAID CARTRIDGE; INLET MEANS FOR PLACING A SOURCE OF ENGINE EXHAUST GASES IN FLUID COMMUNICATION WITH SAID INLET PERFORATE WALL; TREATED GAS OUTLET MEANS FROM SAID CHAMBER IN FLUID COMMUNICATION WITH SAID OUTLET PERFORATE WALL; AND SEAL MEANS REMOVABLY DISPOSED AT THE EXTREMITIES OF SAID CARTRIDGE WITH SAID SOCK POSITIONED THEREBETWEEN FOR PREVENTING CHANNELING OF THE EXHAUST GASES AT THE EXTREMITIES OF SAID CARTRIDGE.
Claim 2
Dependent Claim 200 words
A CONVERTER CONTAINING A BED OF PARTICULATE CATALYST FOR CATALYTIC TREATMENT OF ENGINE EXHAUST GASES COMPRISING A CATALYST CHAMBER HAVING A SUBSTANTIALLY VERTICAL SIDEWALL AND AN OPENING TO RECEIVE SAID CATALYST, A REMOVBLE COVER PLATE MOUNTED OVER THE OPENING IN SAID CHAMBER, CLOSURE CLAMP CLAMPED TO SAID SIDEWALL OF SAID CONVERTER; MEANS ATTACHED BETWEEN SAID CLOSURE CLAMP AND SAID COVER PLATE FOR TIGHTENING SAID PLATE OVER SAD OPENING; SAID ELONGATED, PERFORATED ANNULAR CARTRIDGE MOUNTED WITHIN SAID CHAMBER HAVING AN INLET PERFORATE WALL, AN OUTLET PERFORATE WALL AND AN OPENING AT ONE END THEREOF IN ALIGNMENT WITH THE OPENING IN SAID CHAMBER; AND THEREMALLY DESTRUCTIBLE, POROUS SOCK CONTAINING SAID CATALYST BED IN THE SAME GEOMETRIC CONFIGURATION AS SAID ANNULAR CARTRIDGE SO THAT SAID SOCK IS INSERTABLE THROUGH THE OPENING IN SAID CHAMBER AND INTO THE ANNULUS OF SAID CARTRIDGE; INLET MEANS FOR PLACING A SOURCE OF ENGINE EXHAUST GASES IN FLUID COMMUNICATION WITH SAID INLET PERFORATE WALL; TREATED GAS OUTLET MEANS FROM SAID CHAMBER IN FLUID COMMUNICATION WITH SAID OUTLET PERFORATE WALL; AND SEAL MEANS REMOVABLY DISPOSED AT THE EXTREMITIES OF SAID CARTRIDGE WITH SAID SOCK POSITIONED THEREBETWEEN FOR PREVENTING CHANNELING OF THE EXHAUST GASES AT THE EXTREMITIES OF SAID CARTRIDGE.
Claim 3
Dependent Claim 48 words
The converter of claim 1 wherein said inlet perforate wall has a center, perforated section between its outer extremities thereof and non-perforated end sections at its outer extremities, and the height of each of said end section is at least one half the thickness of said catalyst bed.
Claim 4
Dependent Claim 23 words
The converter of claim 1 wherein said seal means comprises a pair of thermally non-destructible, compressible rings with said catalyst bed positioned therebetween.
Claim 5
Dependent Claim 29 words
The converter of claim 3 wherein said pair of rings are disposed within said sock to impart dimensional stability to said sock as it is inserted into said annulus.
Claim 6
Dependent Claim 56 words
The converter of claim 4 wherein the height of said sock is greater than that of said annulus by an amount in the range of about one to two times the thickness of said bed, before said sock is inserted into said annulus, and wherein said rings are compressible to an extent equal to this amount.
Claim 7
Dependent Claim 52 words
The converter of claim 5 wherein closure means is operably connected to said cover plate and is distally positioned away from the flow of the exhaust gases for gradually tightening said cover plate in place over the opening in said chamber after said sock is inserted therein and for compressing said rings.
Claim 8
Dependent Claim 48 words
The converter of claim 6 wherein said inlet perforate wall has a center, perforated section between its outer extremities thereof and non-perforated end sections at its outer extremities, and the height of each of said end section is at least one half the thickness of said catalyst bed.

References Cited (Backward Citations)

US3124930A Cited
US3449086A Cited
US3445196A Cited
US3477210A Cited
US3597165A Cited
US3644098A Cited
US3699683A Cited
US3713782A Cited
US3696618A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-12-09 1978-06-10 1978-12-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-12-09 1982-06-10 1982-12-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-12-09 1986-06-10 1986-12-10 $7700.00 Window Closed / Lapsed

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