Patent US2744731A successfully refreshed from Google Patents.
US2744731A
Expired / Lapsed
US
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Regenerative heat exchanger
Assignee: Individual
•
Filing: 1951-05-11
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Granted: 1956-05-08
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Expires: 1971-05-11
Abstract
No abstract record available.
Inventors
- 👤 Brandt Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:11
CPC Classifications
F; F28; F28D; F28D19/00; F28D19/04; F28D19/048; F28D19/041; F28D19/047; Y; Y10; Y10S; Y10S165/00; Y10S165/009; Y10S165/013; Y10S165/016; Y10S165/026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A REGENERATIVE HEAT-EXCHANGER COMPRISING IN COMBINATION, A STATIONARY CASING, HAVING CHANNELS FOR A FLUID TO BE COOLED AND A FLUID TO BE HEATED, A SHEET METAL ROTOR OF FLEXIBLE CONSTRUCTION ACCOMODATED IN SAID CASING AND INCLUDING A PLURALITY OF SEGMENTS MOVABLE IN SAID CHANNELS, SAID ROTOR HAVING A CONTINUOUS PERIPHERAL SUPPORTING SURFACE NORMAL TO THE ROTOR AXIS AND AT THE BASE OF
Claim 2
Dependent Claim
62 words
A REGENERATIVE HEAT-EXCHANGER COMPRISING IN COMBINATION, A STATIONARY CASING, HAVING CHANNELS FOR A FLUID TO BE COOLED AND A FLUID TO BE HEATED, A SHEET METAL ROTOR OF FLEXIBLE CONSTRUCTION ACCOMODATED IN SAID CASING AND INCLUDING A PLURALITY OF SEGMENTS MOVABLE IN SAID CHANNELS, SAID ROTOR HAVING A CONTINUOUS PERIPHERAL SUPPORTING SURFACE NORMAL TO THE ROTOR AXIS AND AT THE BASE OF
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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) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |