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 Title: |
US5618501:
Catalytic converter with two or more honeycomb bodies in a casing tube and method for its production
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Wieres, Ludwig; Overath, Germany
Reck, Alfred; Kurten, Germany
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| Assignee: |
Emitec, Gesellschaft fuer Emissionstechnologie mbH, Lohmar, Germany
other patents from EMITEC GESELLSCHAFT FUR EMISSIONSTECHNOLOGIE MBH (172565) (approx. 184)
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| Published / Filed: |
1997-04-08
/ 1995-06-05
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| Application Number: |
US1995000463700
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| IPC Code: |
Advanced:
B01D 53/86;
B01J 35/04;
F01N 3/28;
F01N 7/02;
Core:
B01J 35/00;
F01N 7/00;
more...
IPC-7:
B01D 53/34;
F01N 3/10;
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| ECLA Code: |
B01J35/04; F01N3/28B2B; F01N3/28B2B1; F01N3/28B2B3; F01N3/28C2; R01N330/04; R01N330/44; R01N13/02S;
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| U.S. Class: |
Current:
422/180;
422/171;
422/177;
422/211;
422/222;
Original:
422/180;
422/171;
422/177;
422/211;
422/222;
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| Field of Search: |
422/171,177,180,211,222
502/439,527
055/DIG. 30
060/299
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| Priority Number: |
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| Abstract: |
A catalytic converter includes a casing tube having a given internal diameter. At least two individual honeycomb bodies through which a fluid can flow in a given flow direction, are disposed in the casing tube. The honeycomb bodies are formed of structured metal layers forming flow channels. The layers are joined to the casing tube by joining techniques, such as hard brazing. The honeycomb bodies have a given theoretical strain-free diameter and have an internal layout making the honeycomb bodies elastic and permitting the honeycomb bodies to be inserted into the casing tube with an elastic compression of from 2 to 10% of the given theoretical strain-free diameter and with prestress. A method for producing a catalytic converter includes forming at least two honeycomb bodies with a given theoretical strain-free diameter from structured metal layers defining channels through which a fluid can flow in a given direction. The honeycomb bodies are subsequently successively or simultaneously inserted with prestress from at least one side into a prefabricated casing tube having a given internal diameter. The honeycomb bodies are elastically compressed by from 2 to 10% of the given theoretical strain-free diameter and/or at least partial regions of the casing tube are subsequently plastically compressed by from 2 to 10% of the given internal diameter. The layers are joined to the casing tube.
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| Attorney, Agent or Firm: |
Lerner, Herbert L. ;
Greenberg, Laurence A. ;
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| Primary / Asst. Examiners: |
Warden, Robert J.; Tran, Hien
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Designated Country: |
BR EP JP KR RU US DE ES FR GB IT SE
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| Family: |
Show 16 known family members
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First Claim:
Show all 15 claims |
We claim:
1. A catalytic converter, comprising:
- a casing tube having a given internal diameter;
- at least two individual honeycomb bodies through which a fluid can flow in a given flow direction, said honeycomb bodies being disposed in said casing tube;
- said honeycomb bodies being formed of structured metal layers forming flow channels, said layers being joined to said casing tube by hard brazing; and
- said honeycomb bodies having a given theoretical strain-free diameter and having an elastic compression capacity of from 2 to 10% of said given theoretical strain-free diameter for prestress.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 5 U.S. patent(s) that reference this one
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