Patent US534609A successfully refreshed from Google Patents.
Patent US3177928A successfully refreshed from Google Patents.
US3177928A
Expired / Lapsed
US
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Regenerative heat exchanger
Assignee: RTX Corp
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Filing: 1962-04-26
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Granted: 1965-04-13
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Expires: 1982-04-26
Abstract
No abstract record available.
Inventors
- 👤 Julius W Tumavicus
- 👤 Kenneth W Sawyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:55
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/08; F02C7/10; F02C7/105; F28; F28D; F28D19/00; F28D19/04; Y; Y02; Y02T; Y02T50/00; Y02T50/60; Y10; Y10S; Y10S165/00; Y10S165/009; Y10S165/013; Y10S165/016
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A REGENERATIVE HEAT EXCHANGER, COMPRISING: AN ANNULAR HOUSING; FLOW PASSAGES CONNECTED WITH SAID HOUSING FOR THE FLOW OF HEATING AND HEATED FLUID THROUGH SAID HOUSING; AN ANNULAR REGENERATOR HAVING MATRIX MATERIAL THEREIN DISPOSED WITHIN SAID HOUSING, SAID REGENERATOR INCLUDING A SERIES OF SPACED PARTITIONS EXTENDING TRANSVERSELY THEREOF PROVIDING A PLURALITY OF SEPARATE ARCUATE FLOW PASSAGES FOR THE HEATING AND HEATED FLUIDS; AND MEANS SUPPORTING SAID REGENERATOR FOR ROTATABLE MOVEMENT IN SAID HOUSING, THE MATRIX MATERIAL BEING C-SHAPED IN A TRANSVERSE CROSS SECTION OF THE REGENERATOR, ONE OF SAID FLOW PASSAGE COMMUNICATING WITH THE INTERIOR OF THE REGENERATOR THROUGH THE OPENING PORTION OF THE C, AND IN WHICH ANOTHER PASSAGE COMMUNICATES WITH THE EXTERIOR OF THE REGENERATOR.
Claim 2
Dependent Claim
116 words
A REGENERATIVE HEAT EXCHANGER, COMPRISING: AN ANNULAR HOUSING; FLOW PASSAGES CONNECTED WITH SAID HOUSING FOR THE FLOW OF HEATING AND HEATED FLUID THROUGH SAID HOUSING; AN ANNULAR REGENERATOR HAVING MATRIX MATERIAL THEREIN DISPOSED WITHIN SAID HOUSING, SAID REGENERATOR INCLUDING A SERIES OF SPACED PARTITIONS EXTENDING TRANSVERSELY THEREOF PROVIDING A PLURALITY OF SEPARATE ARCUATE FLOW PASSAGES FOR THE HEATING AND HEATED FLUIDS; AND MEANS SUPPORTING SAID REGENERATOR FOR ROTATABLE MOVEMENT IN SAID HOUSING, THE MATRIX MATERIAL BEING C-SHAPED IN A TRANSVERSE CROSS SECTION OF THE REGENERATOR, ONE OF SAID FLOW PASSAGE COMMUNICATING WITH THE INTERIOR OF THE REGENERATOR THROUGH THE OPENING PORTION OF THE C, AND IN WHICH ANOTHER PASSAGE COMMUNICATES WITH THE EXTERIOR OF THE REGENERATOR.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |