US3662696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tuyere stock for furnaces
Assignee: Paul Wurth SA
•
Filing: 1970-04-20
•
Granted: 1972-05-16
•
Expires: 1990-04-20
Abstract
Abstract A feed conduit having utility in the transmission of heated fluids is disclosed. The apparatus of the present invention is characterized by a curved section, which communicates at its discharge end with a nozzle which supplies the heated fluid to the desired environment, and by a straight portion, which couples the source of heated fluid to the curved portion; the straight portion being formed from at least three members with an intermediate member being connected to the end members by means of articulated joints comprised of cardan compensators. The bellows units of the cardan compensators are protected from the fluid being transmitted by cascade joints packed with a compressible refractory material.
Inventors
- 👤 Rene N Mahr
- 👤 Henri Joseph Radoux
- 👤 Clement E Burton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:34
CPC Classifications
F; F16; F16L; F16L23/00; F16L23/02; F16L23/036; C; C21; C21B; C21B7/00; C21B7/16; C21B7/163
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
133 words
Apparatus for transmitting heated fluid comprising: a first tubular member; a second tubular member; and first expansible joint means coupling a first end of said first member to a first end of said second member, said joint means including: means external of said tubular members and attached to each of said members for rendering said joint means hermetic; a sleeve extension on the first end of one of said members; a socket extension on the first end of said other of said members; a refractory material lining the internal surface of said sleeve extension, said lining defining a tube section having an inner diameter which varies in step-wise fashion; and a refractory material lining on said socket extension, said socket extension lining cooperating with said sleeve extension lining to define a cascade joint.
Claim 2
Dependent Claim
133 words
Apparatus for transmitting heated fluid comprising: a first tubular member; a second tubular member; and first expansible joint means coupling a first end of said first member to a first end of said second member, said joint means including: means external of said tubular members and attached to each of said members for rendering said joint means hermetic; a sleeve extension on the first end of one of said members; a socket extension on the first end of said other of said members; a refractory material lining the internal surface of said sleeve extension, said lining defining a tube section having an inner diameter which varies in step-wise fashion; and a refractory material lining on said socket extension, said socket extension lining cooperating with said sleeve extension lining to define a cascade joint.
Claim 3
Dependent Claim
18 words
The apparatus of claim 1 further comprising: a compressible refractory material positioned between the linings on said extensions.
Claim 4
Dependent Claim
59 words
The apparatus of claim 2 wherein said external means comprises: a bellows unit, said bellows unit being attached to said members adjacent the first ends thereof; ring means positioned radially outward from said bellows unit, said ring means being supported from one of said members; and articulation arms extending between said ring means and the other of said members.
Claim 5
Dependent Claim
168 words
Apparatus for transmitting heated fluid comprising: a first tubular member; a second tubular member; a third tubular member; first expansible joint means coupling a first end of said first member to a first end of said second member, said first joint means including: means external Of said first and second tubular members and attached to each of said members for rendering said first joint means hermetic; a sleeve extension on the first end of one of said first and second members; a socket extension on the first end of said other of said first and second members; a refractory material lining the internal surface of said sleeve extension, said lining defining a tube section having an inner diameter which varies in step-wise fashion; and a refractory material lining on said socket extension, said socket extension lining cooperating with said sleeve extension lining to define a cascade joint; and second expansible joint means coupling a second end of said third member to the second end of said second member.
Claim 6
Dependent Claim
168 words
Apparatus for transmitting heated fluid comprising: a first tubular member; a second tubular member; a third tubular member; first expansible joint means coupling a first end of said first member to a first end of said second member, said first joint means including: means external Of said first and second tubular members and attached to each of said members for rendering said first joint means hermetic; a sleeve extension on the first end of one of said first and second members; a socket extension on the first end of said other of said first and second members; a refractory material lining the internal surface of said sleeve extension, said lining defining a tube section having an inner diameter which varies in step-wise fashion; and a refractory material lining on said socket extension, said socket extension lining cooperating with said sleeve extension lining to define a cascade joint; and second expansible joint means coupling a second end of said third member to the second end of said second member.
Claim 7
Dependent Claim
115 words
The apparatus of claim 4 wherein said second joint means comprises: means external of said second and third tubular members and attached to each of said members for rendering said second joint means hermetic; a sleeve extension on the second end of one of said second and third members; a socket extension on the second end of said other of said second and third members; a refractory material lining the internal surface of said sleeve extension, said lining defining a tube section having an inner diameter which varies in step-wise fashion; and a refractory material lining on said socket extension, said socket extension lining cooperating with said sleeve extension lining to define a cascade joint.
Claim 8
Dependent Claim
61 words
The apparatus of claim 5 wherein each of said external means comprises: a bellows unit attached to the adjacent members in the vicinity of the confronting ends thereof; ring means positioned radially outward from said bellows unit, said ring means being supported from one of said members; and articulation arms extending between said ring means and the other of said members.
Claim 9
Dependent Claim
18 words
The apparatus of claim 6 further comprising: a compressible refractory material positioned between the linings on said extensions.
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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |