Patent US3303645A successfully refreshed from Google Patents.
US3303645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultra-high temperature burners
Assignee: Hitachi Ltd
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Filing: 1966-03-03
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Granted: 1967-02-14
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Expires: 1986-03-03
Abstract
No abstract record available.
Inventors
- 👤 Ishibashi Eiichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:44
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/02; F23R3/04; F23R3/06; F23R3/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
A COMBUSTION CHAMBER, COMPRISING: AN AUTER FIRST WALL; AN INNER SECOND WALL SPACED FROM SAID OUTER WALL; AN INTERMEDIATE THIRD WALL SPACED FROM SAID OUTER AND INNER WALLS; MEANS, INCLUDING SAID OUTER WALL AND SAID INTERMEDIATE WALL OPERABLE TO CONTAIN COOLING FLUID UNDER A HIGH PRESSURE IN A FIRST SPACE, BETWEEN SAID OUTER WALL AND SAID INTERMEDIATE WALL; SAID INTERMEDIATE WALL AND SAID INNER WALL BEING SPACED FROM EACH OTHER TO FORM AN INTERMEDIATE SPACE THEREBETWEEN; MEANS, INCLUDING SAID INNER WALL, ENCLOSING A COMBUSTION SPACE CONTAINING HOT FLUID ON THE INNER SIDE OF SAID INNER WALL OPPOSITE FROM SAID INTERMEDIATE WALL AND SAID OUTER WALL; NOZZLE MEANS OPERABLE TO CONDUCT COOLING FLUID FROM THE FIRST SPACE, THROUGH SAID INTERMEDIATE WALL AND INTO THE COMBUSTION SPACE, AND OPERABLE TO PREVENT THE COOLING FLUID FROM ENTERING THE INTERMEDIATE SPACE BEFORE IT ENTERS THE COMBUSTION SPACE; SAID NOZZLE MEANS BEING RIGIDLY ATTACHED TO SAID INTERMEDIATE WALL AND EXTENDING TOWARD AND THROUGH A CORRESPONDINGLY SHAPED OPENING IN SAID INNER WALL; SAID NOZZLE MEANS HAVING AN INNER PORTION OF REDUCED SIZE WITHIN AND SMALLER THAN THE OPENING IN SAID INNER WALL, AN
Claim 2
Dependent Claim
187 words
A COMBUSTION CHAMBER, COMPRISING: AN AUTER FIRST WALL; AN INNER SECOND WALL SPACED FROM SAID OUTER WALL; AN INTERMEDIATE THIRD WALL SPACED FROM SAID OUTER AND INNER WALLS; MEANS, INCLUDING SAID OUTER WALL AND SAID INTERMEDIATE WALL OPERABLE TO CONTAIN COOLING FLUID UNDER A HIGH PRESSURE IN A FIRST SPACE, BETWEEN SAID OUTER WALL AND SAID INTERMEDIATE WALL; SAID INTERMEDIATE WALL AND SAID INNER WALL BEING SPACED FROM EACH OTHER TO FORM AN INTERMEDIATE SPACE THEREBETWEEN; MEANS, INCLUDING SAID INNER WALL, ENCLOSING A COMBUSTION SPACE CONTAINING HOT FLUID ON THE INNER SIDE OF SAID INNER WALL OPPOSITE FROM SAID INTERMEDIATE WALL AND SAID OUTER WALL; NOZZLE MEANS OPERABLE TO CONDUCT COOLING FLUID FROM THE FIRST SPACE, THROUGH SAID INTERMEDIATE WALL AND INTO THE COMBUSTION SPACE, AND OPERABLE TO PREVENT THE COOLING FLUID FROM ENTERING THE INTERMEDIATE SPACE BEFORE IT ENTERS THE COMBUSTION SPACE; SAID NOZZLE MEANS BEING RIGIDLY ATTACHED TO SAID INTERMEDIATE WALL AND EXTENDING TOWARD AND THROUGH A CORRESPONDINGLY SHAPED OPENING IN SAID INNER WALL; SAID NOZZLE MEANS HAVING AN INNER PORTION OF REDUCED SIZE WITHIN AND SMALLER THAN THE OPENING IN SAID INNER WALL, AN
References Cited (Backward Citations)
US2919549A
Cited
US2918793A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |