Patent US3109580A successfully refreshed from Google Patents.
US3109580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure exchangers
Assignee: Power Jets Research and Development Ltd
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Filing: 1961-12-22
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Granted: 1963-11-05
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Expires: 1981-12-22
Abstract
No abstract record available.
Inventors
- 👤 Kentfield John Alan Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:19
CPC Classifications
F; F04; F04F; F04F13/00; F02; F02B; F02B33/00; F02B33/32; F02B33/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A PRESSURE EXCHANGER INCLUDING A HUB MEANS, A PLURALITY OF OPEN-ENDED CELLS ARRANGED AROUND THE HUB MEANS, THE HUB MEANS AND THE PLURALITY OF OPEN-ENDED CELLS CONSTITUTING A CELL RING, END-PLATE STRUCTURE AT EACH END OF THE CELL RING, PORTS IN THE END-PLATE STRUCTURE FOR THE ADMISSION OF FLUID TO AND THE EXTRACTION OF FLUID FROM THE CELLS, THE CELL RING HAVING A RELATIONSHIP OF
Claim 2
Dependent Claim
65 words
A PRESSURE EXCHANGER INCLUDING A HUB MEANS, A PLURALITY OF OPEN-ENDED CELLS ARRANGED AROUND THE HUB MEANS, THE HUB MEANS AND THE PLURALITY OF OPEN-ENDED CELLS CONSTITUTING A CELL RING, END-PLATE STRUCTURE AT EACH END OF THE CELL RING, PORTS IN THE END-PLATE STRUCTURE FOR THE ADMISSION OF FLUID TO AND THE EXTRACTION OF FLUID FROM THE CELLS, THE CELL RING HAVING A RELATIONSHIP OF
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) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |