US4289196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modular heat exchangers for consolidated nuclear steam generator
Assignee: McDermott Technology Inc
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Filing: 1978-08-24
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Granted: 1981-09-15
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Expires: 1998-08-24
Abstract
Abstract This invention relates to a group of modular heat exchangers of the type having a steam chamber, a feedwater chamber, and a feedwater tube passing through the steam chamber to establish fluid communication with the feed chamber.
Inventors
- 👤 Felix S. Jabsen
- 👤 Donald C. Schluderberg
- 👤 Arnold E. Paulson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:38
CPC Classifications
G; G21; G21C; G21C1/00; G21C1/32; G21C1/322; F; F22; F22B; F22B1/00; F22B1/02; F22B1/16; F22B1/162; F28; F28D; F28D7/00; F28D7/16; F28D7/163; F28F; F28F13/00; F28F9/00; F28F9/02; F28F9/0246; F28F9/026; F28F9/027; F28F9/0275; G21C13/00; G21C13/02; G21C13/032; G21C13/036; G21D; G21D1/00; G21D1/006; G21D5/00; F28D21/00; F28D2021/0019; F28D2021/0054; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S165/00; Y10S165/051; Y10S165/052; Y10S165/063; Y10S165/065; Y10S165/066
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
101 words
A group of modular heat exchangers each of the heat exchangers comprising a steam header, a feedwater header spaced from the steam header, said headers each forming respectively a steam chamber and a feedwater chamber, a feedwater tube that passes through the steam chamber to establish fluid communication with the feedwater chamber, a shroud positioned around the feedwater tube, said steam header and feedwater header having surface recesses for confining the shroud, a feedwater manifold and coiled feedwater manifold tubing in fluid communication with the feedwater manifold and the shrouded feedwater tube in at least some of the modular heat exchangers.
Claim 2
Dependent Claim
101 words
A group of modular heat exchangers each of the heat exchangers comprising a steam header, a feedwater header spaced from the steam header, said headers each forming respectively a steam chamber and a feedwater chamber, a feedwater tube that passes through the steam chamber to establish fluid communication with the feedwater chamber, a shroud positioned around the feedwater tube, said steam header and feedwater header having surface recesses for confining the shroud, a feedwater manifold and coiled feedwater manifold tubing in fluid communication with the feedwater manifold and the shrouded feedwater tube in at least some of the modular heat exchangers.
Claim 3
Dependent Claim
21 words
A group of modular heat exchangers as defined in claim 1 wherein the feed tube is firmly secured in tube sheets.
References Cited (Backward Citations)
FR1100530A
Cited
US2930592A
Cited
US3053512A
Cited
US3129697A
Cited
US3227142A
Cited
US3280905A
Cited
US3245881A
Cited
US3498880A
Cited
DE2123675A1
Cited
US4098329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-14 | 1985-03-16 | 1985-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-14 | 1989-03-16 | 1989-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-14 | 1993-03-16 | 1993-09-15 | $7700.00 | Window Closed / Lapsed |