US3900189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Equipment for treating materials at high temperature and at high pressure
Assignee: ABB Norden Holding AB
•
Filing: 1974-07-16
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Granted: 1975-08-19
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Expires: 1994-07-16
Abstract
Abstract In a device for treating material at high temperature and high pressure which includes a high pressure cylinder built from a tube and a prestressed, force-absorbing wire or strip sheath wound around the tube, with end closures projecting into the cylinder and a press stand for holding the end closures, the cylinder is provided with longitudinally extending cooling channels either running along the inner wall of the sheath or at an intermediate position within the sheath, adjacent to the inner wall thereof.
Inventors
- 👤 Staffan Elmgren
- 👤 Lennart Svensson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:16
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/001; B30B11/002; B22; B22F; B22F3/00; B22F3/12; B22F3/14; B22F3/15
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
91 words
Equipment for treating material at high temperature and high pressure comprising a high pressure cylinder which is built up from a tube and a prestressed force-absorbing wire or strip sheath, wound around said tube, end closures projecting into the cylinder and means for taking up forces acting on the end closures, the cylinder is provided with cooling channels in a tubular layer in heat-exchange contact on at least one side with a part of the strip sheath and located at a substantial distance inwardly from the outside of the strip sheath.
Claim 2
Dependent Claim
91 words
Equipment for treating material at high temperature and high pressure comprising a high pressure cylinder which is built up from a tube and a prestressed force-absorbing wire or strip sheath, wound around said tube, end closures projecting into the cylinder and means for taking up forces acting on the end closures, the cylinder is provided with cooling channels in a tubular layer in heat-exchange contact on at least one side with a part of the strip sheath and located at a substantial distance inwardly from the outside of the strip sheath.
Claim 3
Dependent Claim
23 words
Equipment according to claim 1, in which the layer of cooling channels is in heat-exchange contact with the inner surface of the strip.
Claim 4
Dependent Claim
21 words
Equipment according to claim 1, in which the layer of cooling channels is located within the main body of the strip.
Claim 5
Dependent Claim
14 words
Equipment according to claim 1, in which axially arranged rods form the cooling channels.
Claim 6
Dependent Claim
38 words
Equipment according to claim 4, in which the corners of the rods are bevelled and the axial cooling channels are formed between said bevelled corners and at least one element on one side of the layer of rods.
Claim 7
Dependent Claim
19 words
Equipment according to claim 5, in which such element is a sheetmetal tube on the outside of the rods.
References Cited (Backward Citations)
US3676079A
Cited
US3703278A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |