Patent US3182720A successfully refreshed from Google Patents.
US3182720A
Expired / Lapsed
US
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Heat exchange apparatus
Assignee: Westinghouse Electric Corp
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Filing: 1961-12-27
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Granted: 1965-05-11
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Expires: 1981-12-27
Abstract
No abstract record available.
Inventors
- 👤 Francis X Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:24
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/04; F28F9/16; F28D; F28D7/00; F28D7/16; F28D7/163; F28D7/1638; F28F9/0202; F28F9/0219; F28F9/0221
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A HEAT EXCHANGER STRUCTURE COMPRISING, A CASING STRUCTURE, PARTITION STRUCTURE DIVIDING SAID CASING INTO FIRST AND SECOND COMPARTMENT, SAID PARTITION STRUCTURE INCLUDING A STACK OF MORE THAN TWO SHEET METAL PLATES OF SUBSTANTIALLY SIMILAR SHAPE DISPOSED IN FACE-TO-FACE ABUTMENT WITH EACH OTHER, SAID PLATES BEING OF INDIVIDUAL THICKNESS INSUFFICIENT TO INDIVIDUALLY WITHSTAND OPERATIONAL STRESSES, BUT OF AGGREGATE THICKNESS TO WITHSTAND SAID STRESSES, EACH OF SAID PLATES HAVING A PLURALITY OF APERTURES EXTENDING THERETHROUGH IN A SUBSTANTIALLY IDENTICAL PATTERN, THE APERTURES IN ONE OF SAID PLATES BEING DISPOSED IN AXIAL REGISTRY WITH THE ASSOCIATED APERTURES IN THE OTHER PLATES, A BUNDLE OF ELONGATED TUBULAR MEMBERS, SAID TUBULAR MEMBERS HAVING PORTIONS RECEIVED IN SAID APERTURES AND DISPOSED IN FLUID FLOW COMMUNICATION WITH SAID FIRST COMPARTMENT, AND MEANS ASSOCIATED WITH SAID APERTURES PROVIDING A FLUID TIGHT SEAL BETWEEN SAID FIRST AND SECOND COMPARTMENTS.
Claim 2
Dependent Claim
140 words
A HEAT EXCHANGER STRUCTURE COMPRISING, A CASING STRUCTURE, PARTITION STRUCTURE DIVIDING SAID CASING INTO FIRST AND SECOND COMPARTMENT, SAID PARTITION STRUCTURE INCLUDING A STACK OF MORE THAN TWO SHEET METAL PLATES OF SUBSTANTIALLY SIMILAR SHAPE DISPOSED IN FACE-TO-FACE ABUTMENT WITH EACH OTHER, SAID PLATES BEING OF INDIVIDUAL THICKNESS INSUFFICIENT TO INDIVIDUALLY WITHSTAND OPERATIONAL STRESSES, BUT OF AGGREGATE THICKNESS TO WITHSTAND SAID STRESSES, EACH OF SAID PLATES HAVING A PLURALITY OF APERTURES EXTENDING THERETHROUGH IN A SUBSTANTIALLY IDENTICAL PATTERN, THE APERTURES IN ONE OF SAID PLATES BEING DISPOSED IN AXIAL REGISTRY WITH THE ASSOCIATED APERTURES IN THE OTHER PLATES, A BUNDLE OF ELONGATED TUBULAR MEMBERS, SAID TUBULAR MEMBERS HAVING PORTIONS RECEIVED IN SAID APERTURES AND DISPOSED IN FLUID FLOW COMMUNICATION WITH SAID FIRST COMPARTMENT, AND MEANS ASSOCIATED WITH SAID APERTURES PROVIDING A FLUID TIGHT SEAL BETWEEN SAID FIRST AND SECOND COMPARTMENTS.
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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) | 1968-05-10 | 1968-11-09 | 1969-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-10 | 1972-11-09 | 1973-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-10 | 1976-11-09 | 1977-05-11 | $7700.00 | Window Closed / Lapsed |