US3854888A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the purification of waste gases of internal combustion engines
Assignee: Gillet P dt GmbH
•
Filing: 1973-08-27
•
Granted: 1974-12-17
•
Expires: 1993-08-27
Abstract
Abstract Device for the purification of waste gases of internal combustion engines in a housing having at least one monlith through which the waste gases flow in the housing, the monolith having end edges and one compressed steel body ring absorbing radial forces and a compressed steel body ring absorbing axial forces, where the rings are disposed at the end edges and supporting and protecting rings of thin sheet metal are disposed between the rings and the end edges.
Inventors
- 👤 G Frietzsche
- 👤 P Krause
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:49
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2839; F01N3/2853; F01N13/00; F01N13/009; F01N13/0097; F01N3/2867; F01N13/14; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49893
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
127 words
DEVICE FOR THE PURIFICATION OF WASTE GASES OF INTERNAL COMBUSTION ENGINES COMPRISING A HOUSING HAVING AN INLET AND AN OUTLET AND HAVING AT LEAST ONE MONOLITH THROUGH WHICH THE WASTE GASES FLOW AND WHICH IS DISPOSED IN SAID HOUSING BETWEEN SAID INLET AND OUTLET, SAID AT LEAST ONE MONOLITH HAVING OPPOSED END EDGES AND HAVING ONE COMPRESSED STEEL BODY RING IN CONTACT WITH THE SIDE PORTIONS OF THE END EDGES ABSORBING RADICAL FORCES AND ONE COMPRESSED STEEL BODY RING IN CONTACT WITH THE END PORTIONS OF THE END EDGES ABSORBING AXIAL FORCES, SAID RINGS BEING DISPOSED AT SAID END EDGES ON CONTACT WITH THE HOUSING, AND SUPPORTING AND PROTECTING RINGS OF THIN SHEET METAL DISPOSED BETWEEN AND IN CONTACT WITH SAID RINGS AND SAID END PORTION EDGES.
Claim 2
Dependent Claim
127 words
DEVICE FOR THE PURIFICATION OF WASTE GASES OF INTERNAL COMBUSTION ENGINES COMPRISING A HOUSING HAVING AN INLET AND AN OUTLET AND HAVING AT LEAST ONE MONOLITH THROUGH WHICH THE WASTE GASES FLOW AND WHICH IS DISPOSED IN SAID HOUSING BETWEEN SAID INLET AND OUTLET, SAID AT LEAST ONE MONOLITH HAVING OPPOSED END EDGES AND HAVING ONE COMPRESSED STEEL BODY RING IN CONTACT WITH THE SIDE PORTIONS OF THE END EDGES ABSORBING RADICAL FORCES AND ONE COMPRESSED STEEL BODY RING IN CONTACT WITH THE END PORTIONS OF THE END EDGES ABSORBING AXIAL FORCES, SAID RINGS BEING DISPOSED AT SAID END EDGES ON CONTACT WITH THE HOUSING, AND SUPPORTING AND PROTECTING RINGS OF THIN SHEET METAL DISPOSED BETWEEN AND IN CONTACT WITH SAID RINGS AND SAID END PORTION EDGES.
Claim 3
Dependent Claim
20 words
Device in accordance with claim 1 where the rings in the form of compressed steel bodies comprise refined steel wool.
Claim 4
Dependent Claim
21 words
Device in accordance with claim 1 where the rings in the form of compressed steel bodies comprise refined steel wire netting.
Claim 5
Dependent Claim
41 words
Device in accordance with claIm 3 comprising a single ring in lieu of two individual rings having an inclined inner side cooperating with a correspondingly inclined end edge of the monolith which absorb the axial as well as the radial forces.
Claim 6
Dependent Claim
39 words
Device in accordance with claim 1 where the supporting and protecting rings are repeatedly interrupted circumferentially by radially directed slots in a manner that in no area of the rings there remains a fibrous area passing over the circumference.
Claim 7
Dependent Claim
24 words
Device in accordance with claim 5 where the supporting and protecting ring is enlarged in the direction of the mantle plane of the monolith.
Claim 8
Dependent Claim
46 words
Device in accordance with claim 6, characterized in that the supporting and protecting ring is widened to form a mantle extending over the total length of the monolith and is increasingly conically shaped from the circumference of the monolith to the inner diameter of the housing.
Claim 9
Dependent Claim
30 words
Device in accordance with claim 6 where the supporting and protecting ring extends to the central radial plane of the monolith and is provided there with an outwardly extending flange.
Claim 10
Dependent Claim
26 words
Device in accordance with claim 8 where the housing parts widen conically outwardly toward the connecting flange disposed in the central radial plane of the monolith.
Claim 11
Dependent Claim
28 words
Device in accordance with claim 9 where the ring is of wire netting and proximate the position of the ring the housing has an inwardly extending annular bead.
Claim 12
Dependent Claim
36 words
Device in accordance with claim 10 where the supporting and protecting ring is mounted in the area of the end edge of the monolith and a special cement is interposed between the monolith and the ring.
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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |