Patent US4693079A successfully refreshed from Google Patents.
US4693079A
Expired / Lapsed
US
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Multi-partite exhaust gas line
Assignee: Rolls Royce Solutions GmbH
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Filing: 1986-11-07
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Granted: 1987-09-15
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Expires: 2006-11-07
Abstract
Abstract An exhaust gas line for a piston internal combustion engine assembled of several parts consists of an inner pipe line conducting the exhaust gases and of a housing surrounding this pipe line with a spacing. Each of the housings contains a cooling liquid space. The cooling liquid spaces of adjacent housing are connected with each other by a connecting nipple. The connecting nipple, axially displaceable in the recesses, permits an expansion compensation between adjacent housings.
Inventors
- 👤 Dieter Wuensche
- 👤 Norbert Eisenblaetter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:13
CPC Classifications
F; F16; F16L; F16L39/00; F16L39/005; F01; F01N; F01N3/00; F01N3/02; F01N3/04; F01N3/043; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
131 words
A multi-partite exhaust gas line for a piston internal combustion engine in which each exhaust gas line section includes an inner pipe line means conducting the exhaust gases and a housing means surrounding said pipe line means with a spacing and having a cooling liquid space, the housing means of adjacent exhaust gas line sections being connected with each other, a substantially cylindrical recess means being formed in the adjacent ends of the housing means of two exhaust gas line sections, said recess means cooperating with a connecting nipple means, at least one liquid channel being arranged within the walls of the connecting nipple means that has radial openings, said radial openings corresponding with corresponding radial openings of the cooling liquid spaces in the cylindrical recess means of adjacent housing means.
Claim 2
Dependent Claim
131 words
A multi-partite exhaust gas line for a piston internal combustion engine in which each exhaust gas line section includes an inner pipe line means conducting the exhaust gases and a housing means surrounding said pipe line means with a spacing and having a cooling liquid space, the housing means of adjacent exhaust gas line sections being connected with each other, a substantially cylindrical recess means being formed in the adjacent ends of the housing means of two exhaust gas line sections, said recess means cooperating with a connecting nipple means, at least one liquid channel being arranged within the walls of the connecting nipple means that has radial openings, said radial openings corresponding with corresponding radial openings of the cooling liquid spaces in the cylindrical recess means of adjacent housing means.
Claim 3
Dependent Claim
23 words
An exhaust gas line according to claim 1, wherein the connecting nipple means cooperates at its outer diameter with the cylindrical recess means.
Claim 4
Dependent Claim
23 words
An exhaust gas line according to claim 1, wherein the connecting nipple means cooperates at its inner diameter with the cylindrical recess means.
Claim 5
Dependent Claim
33 words
An exhaust gas line according to claim 1, further comprising sealing ring means arranged axially adjacent on both sides of the respective corresponding openings of the cylindrical recess means and connecting nipple means.
Claim 6
Dependent Claim
29 words
An exhaust gas line according to claim 1, wherein the connecting nipple means includes an outer and an inner substantially cylindrical wall which enclose therebetween a ring-shaped hollow space.
Claim 7
Dependent Claim
26 words
An exhaust gas line according to claim 5, wherein the outer and the inner cylindrical walls are connected with each other fluid-tight along their axial edges.
Claim 8
Dependent Claim
23 words
An exhaust gas line according to claim 4, wherein the connecting nipple means cooperates at its outer diameter with the cylindrical recess means.
Claim 9
Dependent Claim
23 words
An exhaust gas line according to claim 4, wherein the connecting nipple means cooperates at its inner diameter with the cylindrical recess means.
Claim 10
Dependent Claim
33 words
An exhaust gas line according to claim 5, further comprising sealing ring means arranged axially adjacent on both sides of the respective corresponding openings of the cylindrical recess means and connecting nipple means.
Claim 11
Dependent Claim
26 words
An exhaust gas line according to claim 9, wherein the outer and the inner cylindrical walls are connected with each other fluid-tight along their axial edges.
Claim 12
Dependent Claim
23 words
An exhaust gas line according to claim 10, wherein the connecting nipple means cooperates at its outer diameter with the cylindrical recess means.
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) | 1990-09-14 | 1991-03-16 | 1991-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-14 | 1995-03-16 | 1995-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-14 | 1999-03-16 | 1999-09-15 | $7700.00 | Window Closed / Lapsed |