Patent US3734175A successfully refreshed from Google Patents.
US3734175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: YOUNG RADIATOR COMP
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Filing: 1971-08-30
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Granted: 1973-05-22
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Expires: 1991-08-30
Abstract
Abstract Apparatus, and method, pertaining to bonding tube-supporting plates to the end hubs of what commonly is designated as ''''Fixed Tube Bundle Heat Exchangers.'''' A shell surrounds a tube bundle having a header plate at each end. The header plates are bonded to the ends of the shell by method and means of a snap ring anchored in the shell, with the plate on the snap ring. A ring of bonding material is then fused to the circumference of the plate at the shell interior and on the ring.
Inventors
- 👤 D Christensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:47
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/0219; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/40; Y10S165/401; Y10S165/416; Y10S165/417; Y10S165/418; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49373
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
135 words
A heat exchanger for cooling liquids, comprising a shell for the flow of liquid therethrough and having a circular groove spaced from the end of said shell and extending on the interior surface of said shell, a heat-resistant ring permanently fixedly anchored in said groove and projecting from said shell to extend beyond the interior surface thereof, a core unit including a plurality of tubes and a header plate bonded together, said header plate and said heat-resistant ring being substantially the same over-all dimension to permit said header plate to overlie said heat resistant ring and be in abutment with the latter and disposed only to the side of said ring toward said end of said shell, and said shell and said heat-resistant ring and said header plate all being fluid-tightly bonded to each other.
Claim 2
Dependent Claim
135 words
A heat exchanger for cooling liquids, comprising a shell for the flow of liquid therethrough and having a circular groove spaced from the end of said shell and extending on the interior surface of said shell, a heat-resistant ring permanently fixedly anchored in said groove and projecting from said shell to extend beyond the interior surface thereof, a core unit including a plurality of tubes and a header plate bonded together, said header plate and said heat-resistant ring being substantially the same over-all dimension to permit said header plate to overlie said heat resistant ring and be in abutment with the latter and disposed only to the side of said ring toward said end of said shell, and said shell and said heat-resistant ring and said header plate all being fluid-tightly bonded to each other.
Claim 3
Dependent Claim
31 words
The heat exchanger as claimed in claim 1, wherein said header plate is flanged at the periphery thereof, and edge of the flange is disposed in abutment with said heat-resistant ring.
Claim 4
Dependent Claim
46 words
The heat exchanger as claimed in claim 1, wherein said shell has two oppositely disposed open ends, and said tubes extend between said open ends and one said header plate is at each end of said tubes and extends across each open end of said shell.
Claim 5
Dependent Claim
39 words
The heat exchanger as claimed in claim 1, wherein said core unit includes baffles and spacers disposed along said tubes and there is one said header plate at each end of saId tubes and bonded to said tube ends.
Claim 6
Dependent Claim
28 words
The heat exchanger as claimed in claim 1, wherein said fluid-tight bonding between said shell and both of said plate and said ring presents fillets of bonding therebetween.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |