US3751220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid delivery system for rotary kiln
Assignee: Allis Chalmers Corp
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Filing: 1972-11-24
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Granted: 1973-08-07
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Expires: 1992-11-24
Abstract
Abstract A rotary kiln is disclosed with a stationary hood mounted concentrically over the material feed end of the kiln. Fuel nozzles are mounted on the outer surface of the kiln shell and are connected to a manifold also mounted on the outer surface of the kiln shell. A fuel delivery tube connected to the manifold projects radially inwardly to the interior of the kiln and then axially outwardly through the hood to the exterior of the kiln for connection to the fuel supply. A cooling air pipe surrounds the portion of the fuel tube located in the interior of the kiln. Air is forced through the pipe to cool the fuel. A flexible ball joint is provided in the cooling pipe to compensate for any misalignment between the rotating axis of the kiln and the stationary axis of the hood.
Inventors
- 👤 E Rossi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:41
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/08; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/8807
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
129 words
A fluid delivery system for a rotary ore reducing kiln comprising: a rotating elongated cylindrical shell defining a combustion chamber; fluid conduit means supported on the exterior of said shell for rotation therewith; a stationary hood located concentric with said kiln shell and having an opening in communication with said combustion chamber; pipe means extending through said hood axially into said chamber and including a radially disposed portion extending through said shell to the exterior thereof, said pipe means rotating with said kiln; a slidable pipe joint associated with said pipe means adapted to permit angular movement of said pipe means to compensate for misalignment between said shell and said hood; and fluid tube means extending through said pipe means connected in fluid communication with said fluid conduit means.
Claim 2
Dependent Claim
129 words
A fluid delivery system for a rotary ore reducing kiln comprising: a rotating elongated cylindrical shell defining a combustion chamber; fluid conduit means supported on the exterior of said shell for rotation therewith; a stationary hood located concentric with said kiln shell and having an opening in communication with said combustion chamber; pipe means extending through said hood axially into said chamber and including a radially disposed portion extending through said shell to the exterior thereof, said pipe means rotating with said kiln; a slidable pipe joint associated with said pipe means adapted to permit angular movement of said pipe means to compensate for misalignment between said shell and said hood; and fluid tube means extending through said pipe means connected in fluid communication with said fluid conduit means.
Claim 3
Dependent Claim
28 words
The fluid delivery system set forth in claim 1 and further comprising air supply means connected to said pipe means for supplying cooling air through said pipe means.
Claim 4
Dependent Claim
22 words
The fluid delivery system set forth in claim 1 wherein said slidable pipe joint includes complementary hemispherical surfaces slidably engaging one another.
Claim 5
Dependent Claim
30 words
The fluid delivery system set forth in claim 1 and further comprising spring biasing means engaging said pipe means to urge said slidable pipe joint portions into operative sliding engagement.
Claim 6
Dependent Claim
19 words
The fluid delivery system set forth in claim 4 wherein the cooling air flows over said spring biasing 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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |