US3637008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holder for u-tube bundles of steam generators
Assignee: Siemens AG
•
Filing: 1969-09-18
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Granted: 1972-01-25
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Expires: 1989-09-18
Abstract
Abstract In substantially upright U-tube bundles of steam generators, tube holders located at substantially horizontally extending turns of the U-tube bundles and comprising a plurality of waveshaped bands disposed substantially parallel to one another between respective rows of tubes located in the same plane, the waves of each of said bands forming respective bulges, adjacent bands being disposed relative to one another so that the bulges thereof alternately face away from and toward one another, the respective pairs of bulges facing away from one another defining spaces therebetween respectively for receiving individual tubes therein, the bulges facing toward one another being firmly secured to and prestressed toward one another.
Inventors
- 👤 Eberhard Michel
- 👤 Hans Mayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:04
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/007; F28F9/013; F28F9/0132; F22; F22B; F22B37/00; F22B37/02; F22B37/10; F22B37/20; F22B37/205; F22B37/206
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
141 words
In substantially upright U-tube bundles of steam generators, tube holder assembly located at substantially horizontally extending turns of the U-tube bundles and comprising a plurality of wave-shaped bands disposed substantially parallel to one another between respective rows of tubes located in the same plane, the waves of each of said bands forming respective bulges, adjacent bands being disposed relative to one another so that the bulges thereof alternately face away from and toward one another, the respective pairs of bulges facing away from one another defining spaces therebetween respectively for receiving individual tubes therein of such diameter that the bulges facing toward one another are spaced from one another, said bulges facing toward one another being firmly secured to and prestressed toward one another so as to clamp the tubes between the respective pairs of bulges facing away from one another.
Claim 2
Dependent Claim
141 words
In substantially upright U-tube bundles of steam generators, tube holder assembly located at substantially horizontally extending turns of the U-tube bundles and comprising a plurality of wave-shaped bands disposed substantially parallel to one another between respective rows of tubes located in the same plane, the waves of each of said bands forming respective bulges, adjacent bands being disposed relative to one another so that the bulges thereof alternately face away from and toward one another, the respective pairs of bulges facing away from one another defining spaces therebetween respectively for receiving individual tubes therein of such diameter that the bulges facing toward one another are spaced from one another, said bulges facing toward one another being firmly secured to and prestressed toward one another so as to clamp the tubes between the respective pairs of bulges facing away from one another.
Claim 3
Dependent Claim
22 words
TUbe holder assembly according to claim 1, wherein said holder bands are formed of material softer than the material of the tubes.
Claim 4
Dependent Claim
20 words
Tube holder assembly according to claim 1, wherein the bulges facing toward one another are held together by threaded connections.
Claim 5
Dependent Claim
64 words
Tube holder assembly according to claim 1, wherein, respectively, one of the bulges facing toward one another is formed with a bore, a pin having an internally threaded bore is welded to the other of the bulges facing toward one another, and a screw extends through the bore in the one bulge and is threadedly secured in the internally threaded bore of said pin.
Claim 6
Dependent Claim
31 words
Tube holder assembly according to claim 1, wherein crosspieces are disposed between respective pairs of bulges facing toward one another, said crosspieces being welded respectively to the bulges of said pairs.
Claim 7
Dependent Claim
54 words
Tube holder assembly according to claim 1, wherein, respectively, one of the bulges facing toward one another, is formed with a bore, and including a pin welded at one end to the other of said bulges, the other end of the pin being received and welded in the bore formed in said one bulge.
Claim 8
Dependent Claim
43 words
Tube holder assembly according to claim 1, wherein the bulges facing toward one another are respectively formed with outwardly directed bends substantially in contact with one another and including respective welds directly connecting adjacent pairs of said outwardly directed bends to one another.
References Cited (Backward Citations)
US3104218A
Cited
US3137638A
Cited
US3139070A
Cited
US3199582A
Cited
US3344855A
Cited
US3503440A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |