US3224502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Finned envelope heat exchanger
Assignee: RTX Corp
•
Filing: 1963-05-29
•
Granted: 1965-12-21
•
Expires: 1983-05-29
Abstract
No abstract record available.
Inventors
- 👤 Rudolf N Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:02
CPC Classifications
F; F28; F28D; F28D9/00; F28D9/0012; F28D9/0018; F02; F02C; F02C7/00; F02C7/08; Y; Y10; Y10S; Y10S165/00; Y10S165/051; Y10S165/052; Y10S165/067
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
IN A RADIATOR FOR TRANSFERRING HEAT FROM ONE FLUID STREAM TO ANOTHER, ELONGATED CONCENTRIC CYLINDRICAL CASING MEMBERS DEFINING A TOROIDAL SHAPED CHAMBER THEREBETWEEN, A RADIATOR MATRIX COMPRISING A PLURALITY OF ELONGATED U-SHAPED TUBULAR ELEMENTS THE PARALLEL LEGS OF EACH OF WHICH ARE FLATTENED AND CURVED NORMAL TO THEIR LENGTH TO FORM HOLLOW ENVELOPES WHICH LIE IN THE SAME CURVED PLANES, SAID ELEMNETS BEING ARRANGED SIDE-BY-SIDE IN A CIRCLE ABOUT SAID TOROIDAL CHAMBER WITH THEIR FLAT SIDE SURFACES IN JUXTAPOSITION, INNER AND OUTER ANNULAR MANIFOLDS, ONE ADJACENT THE INNER CASING MEMBER, THE OTHER ADJACENT THE OUTER CASING MEMBER, CONDUIT MEANS FOR CONNECTING THE INNER LEGS OF SAID U-SHAPED ELEMENTS AT THEIR FREE ENDS TO SAID INNER MANIFOLD, CONDUIT MEANS FOR CONNECTING THE OUTER LEGS OF SAID ELEMENTS AT THEIR FREE
Claim 2
Dependent Claim
129 words
IN A RADIATOR FOR TRANSFERRING HEAT FROM ONE FLUID STREAM TO ANOTHER, ELONGATED CONCENTRIC CYLINDRICAL CASING MEMBERS DEFINING A TOROIDAL SHAPED CHAMBER THEREBETWEEN, A RADIATOR MATRIX COMPRISING A PLURALITY OF ELONGATED U-SHAPED TUBULAR ELEMENTS THE PARALLEL LEGS OF EACH OF WHICH ARE FLATTENED AND CURVED NORMAL TO THEIR LENGTH TO FORM HOLLOW ENVELOPES WHICH LIE IN THE SAME CURVED PLANES, SAID ELEMNETS BEING ARRANGED SIDE-BY-SIDE IN A CIRCLE ABOUT SAID TOROIDAL CHAMBER WITH THEIR FLAT SIDE SURFACES IN JUXTAPOSITION, INNER AND OUTER ANNULAR MANIFOLDS, ONE ADJACENT THE INNER CASING MEMBER, THE OTHER ADJACENT THE OUTER CASING MEMBER, CONDUIT MEANS FOR CONNECTING THE INNER LEGS OF SAID U-SHAPED ELEMENTS AT THEIR FREE ENDS TO SAID INNER MANIFOLD, CONDUIT MEANS FOR CONNECTING THE OUTER LEGS OF SAID ELEMENTS AT THEIR FREE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |