US3341112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure exchangers
Assignee: Power Jets Research and Development Ltd
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Filing: 1965-10-21
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Granted: 1967-09-12
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Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 Barnes John Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:05
CPC Classifications
F; F04; F04F; F04F13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A PRESSURE EXCHANGER COMPRISING (A) A FIRST STRUCTURE HAVING CELLS IN WHICH ONE GAS QUANTITY EXPANDS, SO COMPRESSING ANOTHER GAS QUANTITY WITH WHICH IT IS IN DIRECT CONTACT, (B) A SECOND STRUCTURE HAVING PORTS COMMUNICATING WITH THE CELLS, (C) DUCTING COMMUNICATING WITH THE PORTS TO LEAD GAS AT DIFFERENT PRESSURE STEADILY TO AND FROM THE CELLS, (D) MEANS TO EFFECT RELATIVE MOTION BETWEEN THE STRUCTURES, (E) A SURFACE ON EACH STRUCTURE, WHICH SURFACES WHILE DEFINING A CLEARANCE PERMITTING SAID MOTION, PROVIDE A PATH FOR THE FLOW OF LEAKAGE GAS FROM A HIGH-PRESSURE ZONE TO A LOW-PRESSURE ZONE, (F) AN EXPANSION ZONE FORMED IN ONE OF THE SURFACES, THAT IS TO SAY A ZONE PROVIDING A LOCAL INCREASE IN VOLUME OF THE LEAKAGE PATH, AND (G) MEANS ON THE OTHER OF SAID SURFACES COOPERATING WITH THE EXPANSION ZONE TO PLACE IT IN COMMUNICATION WITH THE LOW-PRESSURE ZONE AND TO DIRECT THE LEAKAGE GAS IN THE SAME GENERAL DIRECTION AS THE FLOW OF GAS IN THAT ZONE.
Claim 2
Dependent Claim
165 words
A PRESSURE EXCHANGER COMPRISING (A) A FIRST STRUCTURE HAVING CELLS IN WHICH ONE GAS QUANTITY EXPANDS, SO COMPRESSING ANOTHER GAS QUANTITY WITH WHICH IT IS IN DIRECT CONTACT, (B) A SECOND STRUCTURE HAVING PORTS COMMUNICATING WITH THE CELLS, (C) DUCTING COMMUNICATING WITH THE PORTS TO LEAD GAS AT DIFFERENT PRESSURE STEADILY TO AND FROM THE CELLS, (D) MEANS TO EFFECT RELATIVE MOTION BETWEEN THE STRUCTURES, (E) A SURFACE ON EACH STRUCTURE, WHICH SURFACES WHILE DEFINING A CLEARANCE PERMITTING SAID MOTION, PROVIDE A PATH FOR THE FLOW OF LEAKAGE GAS FROM A HIGH-PRESSURE ZONE TO A LOW-PRESSURE ZONE, (F) AN EXPANSION ZONE FORMED IN ONE OF THE SURFACES, THAT IS TO SAY A ZONE PROVIDING A LOCAL INCREASE IN VOLUME OF THE LEAKAGE PATH, AND (G) MEANS ON THE OTHER OF SAID SURFACES COOPERATING WITH THE EXPANSION ZONE TO PLACE IT IN COMMUNICATION WITH THE LOW-PRESSURE ZONE AND TO DIRECT THE LEAKAGE GAS IN THE SAME GENERAL DIRECTION AS THE FLOW OF GAS IN THAT ZONE.
References Cited (Backward Citations)
US2800120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |