Patent US3348765A successfully refreshed from Google Patents.
US3348765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure exchangers
Assignee: Individual
•
Filing: 1965-10-19
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Granted: 1967-10-24
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Expires: 1985-10-19
Abstract
No abstract record available.
Inventors
- 👤 Spalding Dudley Brian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:19
CPC Classifications
F; F04; F04F; F04F13/00; F02; F02B; F02B33/00; F02B33/32; F02B33/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 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 PRESSURES STEADILY TO AND FROM THE CELLS, (D) MEANS TO EFFECT RELATIVE MOTION BETWEEN THE STRUCTURES, AND (E) A SURFACE ON EACH STRUCTURE, WHICH SURFACES DEFINE A CLEARANCE PERMITTING SAID MOTION AND PROVIDING A PATH FOR THE FLOW OF LEAKAGE GAS FROM A HIGH-PRESSURE ZONE TO A LOW-PRESSURE ZONE, CHARACTERIZED IN THAT ONE OF SAID SURFACES CONTINUES BEYOND THE TERMINATION OF THE OTHER SURFACE AND HAS A PORTION WHICH IS CURVED AWAY FROM THE OTHER SURFACE WHEREBY THE LEAKAGE GAS IS INDUCED TO FOLLOW THE CURVED SURFACE AND THE ENTER THE LOW-PRESSURE ZONE IN THE SAME GENERAL DIRECTION AS THE FLOW OF GAS IN THAT ZONE.
Claim 2
Dependent Claim
155 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 PRESSURES STEADILY TO AND FROM THE CELLS, (D) MEANS TO EFFECT RELATIVE MOTION BETWEEN THE STRUCTURES, AND (E) A SURFACE ON EACH STRUCTURE, WHICH SURFACES DEFINE A CLEARANCE PERMITTING SAID MOTION AND PROVIDING A PATH FOR THE FLOW OF LEAKAGE GAS FROM A HIGH-PRESSURE ZONE TO A LOW-PRESSURE ZONE, CHARACTERIZED IN THAT ONE OF SAID SURFACES CONTINUES BEYOND THE TERMINATION OF THE OTHER SURFACE AND HAS A PORTION WHICH IS CURVED AWAY FROM THE OTHER SURFACE WHEREBY THE LEAKAGE GAS IS INDUCED TO FOLLOW THE CURVED SURFACE AND THE ENTER THE LOW-PRESSURE ZONE IN THE SAME GENERAL DIRECTION AS THE FLOW OF GAS IN THAT ZONE.
References Cited (Backward Citations)
US2962272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |