Patent US3327770A successfully refreshed from Google Patents.
US3327770A
Expired / Lapsed
US
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Rotary regenerative heat exchangers
Assignee: Individual
•
Filing: 1965-10-15
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Granted: 1967-06-27
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Expires: 1985-10-15
Abstract
No abstract record available.
Inventors
- 👤 Brandt Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:37
CPC Classifications
F; F23; F23L; F23L15/00; F23L15/02; F28; F28D; F28D11/00; F28D11/02; F28D19/00; F28D19/04; F28D19/041; F28D19/042; F28D19/044; F28D19/047; Y; Y10; Y10S; Y10S165/00; Y10S165/009; Y10S165/013; Y10S165/016
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A PARTITION FORMING CHAMBERS IN THE REGENERATOR OF A ROTARY REGENERATIVE HEAT EXCHANGER, EACH OF THE SAID CHAMBERS BEING ADAPTED TO CONTAIN A MASS OF HEAT EXCHANGE MATERIAL, COMPRISING A METAL PLATE ON TO EDGES OF WHICH PLATE ARE SUPERIMPOSED AT LEAST TWO LAYERS OF METAL, THE METAL LAYER CONTIGUOUS WITH THE METAL PLATE BEING FORMED OF HARD METAL WHILST THE OUTERMOST METAL LAYER IS FORMED OF SOFT METAL, THE SAID EDGES OF THE PLATE BEING THOSE EDGES WHICH ARE TO BE DISPOSED AT THE AXIAL ENDS OF THE REGENERATOR.
Claim 2
Dependent Claim
90 words
A PARTITION FORMING CHAMBERS IN THE REGENERATOR OF A ROTARY REGENERATIVE HEAT EXCHANGER, EACH OF THE SAID CHAMBERS BEING ADAPTED TO CONTAIN A MASS OF HEAT EXCHANGE MATERIAL, COMPRISING A METAL PLATE ON TO EDGES OF WHICH PLATE ARE SUPERIMPOSED AT LEAST TWO LAYERS OF METAL, THE METAL LAYER CONTIGUOUS WITH THE METAL PLATE BEING FORMED OF HARD METAL WHILST THE OUTERMOST METAL LAYER IS FORMED OF SOFT METAL, THE SAID EDGES OF THE PLATE BEING THOSE EDGES WHICH ARE TO BE DISPOSED AT THE AXIAL ENDS 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) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |