Patent US2585984A successfully refreshed from Google Patents.
US2585984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pebble heater apparatus and method for heat exchange
Assignee: Phillips Petroleum Co
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Filing: 1946-05-02
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Granted: 1952-02-19
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Expires: 1966-05-02
Abstract
No abstract record available.
Inventors
- 👤 Alexander Cruzan
- 👤 Harris A Dutcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:21
CPC Classifications
F; F28; F28C; F28C3/00; F28C3/10; F28C3/12; B; B01; B01J; B01J8/00; B01J8/08; B01J8/087; B01J8/18; B01J8/1881; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00327; B01J2208/00336; B01J2208/0038; B01J2208/00477; B01J2208/00495; B01J2208/00504; B01J2208/00513; B01J2208/0053
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
A METHOD OF HEATING A GAS BY DIRECT CONTACT WITH HOT PEBBLES WHICH COMPRISES BURNING A COMBUSTIBLE MIXTURE, PASSING A BLAST OF THE RESULTING GASEOUS MIXTURE THROUGH AN ORIFICE INTO THE LOWER END OF A NARROW ELONGATED VERTICAL CONFINED ZONE DIRECTLY ABOVE SAID ORIFICE SO AS TO HEAT AND ENTRAIN PEBBLES FROM THE AREA SURROUNDING SAID ORIFICE AND THE LOWER END OF SAID ZONE, THEREBY LIFTING THE RESULTING HOT PEBBLES THROUGH SAID ZONE INTO AN UPPER EXPANDED ZONE; PASSING A GAS THROUGH SAID UPPER ZONE IN DIRECT HEAT EXCHANGE WITH SAID PEBBLES; MAINTAINING A COMPACT LAYER OF PEBBLES IN THE LOWER PORTION OF SAID UPPER ZONE WHILE SIMULTANEOUSLY PASSING PEBBLES BY GRAVITY THROUGH A PLURALITY OF PATHS DISTRIBUTED OVER THE BOTTOM OF SAID UPPER ZONE TO A SUBJACENT ZONE SURROUNDING SAID NARROW VETICAL CONFINED ZONE, THEREBY PASSING FREELY FALLING PEBBLES OVER SUBSTANTIALLY THE ENTIRE HORIZONTAL CROSS SECTION OF SAID SUBJACENT ZONE TO A BED OF SAME SURROUNDING SAID LOWER END OF SAID NARROW ZONE; AND PASSING A GAS THROUGH SAID SUBJACENT ZONE IN DIRECT HEAT EXCHANGE WITH SAID FREELY FALLING PEBBLES.
Claim 2
Independent Claim
181 words
A METHOD OF HEATING A GAS BY DIRECT CONTACT WITH HOT PEBBLES WHICH COMPRISES BURNING A COMBUSTIBLE MIXTURE, PASSING A BLAST OF THE RESULTING GASEOUS MIXTURE THROUGH AN ORIFICE INTO THE LOWER END OF A NARROW ELONGATED VERTICAL CONFINED ZONE DIRECTLY ABOVE SAID ORIFICE SO AS TO HEAT AND ENTRAIN PEBBLES FROM THE AREA SURROUNDING SAID ORIFICE AND THE LOWER END OF SAID ZONE, THEREBY LIFTING THE RESULTING HOT PEBBLES THROUGH SAID ZONE INTO AN UPPER EXPANDED ZONE; PASSING A GAS THROUGH SAID UPPER ZONE IN DIRECT HEAT EXCHANGE WITH SAID PEBBLES; MAINTAINING A COMPACT LAYER OF PEBBLES IN THE LOWER PORTION OF SAID UPPER ZONE WHILE SIMULTANEOUSLY PASSING PEBBLES BY GRAVITY THROUGH A PLURALITY OF PATHS DISTRIBUTED OVER THE BOTTOM OF SAID UPPER ZONE TO A SUBJACENT ZONE SURROUNDING SAID NARROW VETICAL CONFINED ZONE, THEREBY PASSING FREELY FALLING PEBBLES OVER SUBSTANTIALLY THE ENTIRE HORIZONTAL CROSS SECTION OF SAID SUBJACENT ZONE TO A BED OF SAME SURROUNDING SAID LOWER END OF SAID NARROW ZONE; AND PASSING A GAS THROUGH SAID SUBJACENT ZONE IN DIRECT HEAT EXCHANGE WITH SAID FREELY FALLING PEBBLES.
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) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |