US3901646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace construction
Assignee: Heinrich Koppers GmbH
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Filing: 1973-10-16
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Granted: 1975-08-26
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Expires: 1993-10-16
Abstract
Abstract A first tubular socket is connectable to one vessel and has a free end, and a second tubular socket is connectable to another vessel and also has a free end. Each of the free ends is provided with an annular reinforcing member which is rigid with it, and annular shoulders on the reinforcing members engage one behind the other so that the shoulders prevent axial separation of the tubular sockets. The reinforcing members have, however, limited freedom of relative radial movement so that limited relative displacement of the tubular sockets in radial direction is possible.
Inventors
- 👤 Willi Coenders
- 👤 Franz Trockel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:26
CPC Classifications
C; C21; C21B; C21B9/00; F; F16; F16L; F16L27/00; F16L27/10; F16L27/1004
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
167 words
In a furnace, a combination comprising a combustion chamber and an air heater chamber; a pair of tubular sockets each connected to and communicating with one of said chambers and each having a free end, said free ends facing toward one another; a pair of annular reinforcing members each rigidly connected with one of said free ends, one of said reinforcing members being telescoped into the other reinforcing member and defining therewith a radial gap communicating with the interior of said reinforcing members and sufficient to permit limited relative displacement of said tubular sockets in radial direction, said reinforcing members being provided with respective external and internal shoulders which project into said gap and bear upon one another for preventing axial separation of said tubular sockets; and means for shielding said shoulders against contact with the contents of said sockets and reinforcing members, said shielding means including a labyrinthine-type seal mounted in said gap intermediate said shoulders and the region where said gap communicates with said interior.
Claim 2
Dependent Claim
167 words
In a furnace, a combination comprising a combustion chamber and an air heater chamber; a pair of tubular sockets each connected to and communicating with one of said chambers and each having a free end, said free ends facing toward one another; a pair of annular reinforcing members each rigidly connected with one of said free ends, one of said reinforcing members being telescoped into the other reinforcing member and defining therewith a radial gap communicating with the interior of said reinforcing members and sufficient to permit limited relative displacement of said tubular sockets in radial direction, said reinforcing members being provided with respective external and internal shoulders which project into said gap and bear upon one another for preventing axial separation of said tubular sockets; and means for shielding said shoulders against contact with the contents of said sockets and reinforcing members, said shielding means including a labyrinthine-type seal mounted in said gap intermediate said shoulders and the region where said gap communicates with said interior.
Claim 3
Dependent Claim
31 words
An arrangement as defined in claim 1, and further comprising compensating means bridging said first and second tubular sockets and operative to compensate for thermal expansions; and contractions of the same.
Claim 4
Dependent Claim
61 words
An arrangement as defined in claim 1, one of said reinforcing mEmbers having a radially outwardly projecting annular portion provided with an annular shoulder at its one axial end, and the other reinforcing member having a radially inwardly projecting annular portion provided with an annular shoulder at its other axial end, said shoulders being axially juxtaposed and bearing upon one another.
Claim 5
Dependent Claim
16 words
An arrangement as defined in claim 4, and further comprising anti-friction means interposed between said shoulders.
Claim 6
Dependent Claim
105 words
An arrangement as defined in claim 1, and further comprising compensating means bridging said first and second tubular sockets so as to compensate for thermal shifting of the same, said compensating means including one bellows member surrounding said first socket and having one end rigid with the same and an open end facing said second socket, an other bellows member surrounding said second socket and having one end rigid with the same and an open end facing said first socket, and a tubular member surrounding said sockets and reinforcing members intermediate and with clearance from said open ends and being sealingly connected with the latter.
Claim 7
Dependent Claim
25 words
An arrangement as defined in claim 5, wherein at least one of said sockets is provided with at least one aperture communicating with said clearance.
Claim 8
Dependent Claim
31 words
An arrangement as defined in claim 5, and further comprising at least one blockable drain opening in at least one of said bellows members for draining of liquid from the same.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |