US2618540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas mixer
Assignee: Airco Inc
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Filing: 1949-09-30
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Granted: 1952-11-18
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Expires: 1969-09-30
Abstract
No abstract record available.
Inventors
- 👤 Teti John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:30
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/72; F23D14/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
A GAS MIXER COMPRISING A BODY PORTION HAVING SEPARATE INLETS FOR A PLURALITY OF GASES TO BE MIIXED WITHIN THE BODY PORTION AND FURTHER HAVING AN OUTLET THROUGH WHICH MIXED GASES ARE DISCHARGED, SAID BODY PORTION ALSO HAVING A GAS MIXING REGION INTERMEDIATE THE INLETS AND THE OUTLET. AND A BLOCK OF POROUS MATERIAL IN EACH INLET UPSTREAM OF SAID MIXING REGION WHEREBY THE GASES TO BE MIXED MUST PASS THROUGH THE POROUS BLOCKS PRIOR TO REACHING SAID MIXING REGION, SUBSTANTIALLY ALL OF THE INTERSTICES OF SAID POROUS MATERIAL HAVING DIAMETERS OF THE ORDER OF .002 TO .005 INCHES AND OF SUCH SIZE THAT ON A BACKFIRE, REVERSE FLOW OF A SUBSTANTIAL AMOUNT OF THE ACTIVE PRODUCTS OF COMBUSTION WILL FLOW THROUGH THE POROUS BLOCKS AND BE DEACTIVATED SO THAT THEY WILL NOT IGNITE THE MIXTURE OF INCOMIING FRESH GASES WHEN THEY REACH THE MIXING REGION AFTER THE BACKFIRE AND THE DEACTIVATED PRODUCTS OF COMBUSTION ACT AS A BUFFER TO PREVENT IGNITION OF SUCH FRESH MIXTURE OF GASES BY ANY STILL-ACTIVE PRODUCTS OF COMBUSTION DOWNSRTEAM OF THE DEACTIVATED PRODUCTS OF COMBUSTION.
Claim 2
Dependent Claim
181 words
A GAS MIXER COMPRISING A BODY PORTION HAVING SEPARATE INLETS FOR A PLURALITY OF GASES TO BE MIIXED WITHIN THE BODY PORTION AND FURTHER HAVING AN OUTLET THROUGH WHICH MIXED GASES ARE DISCHARGED, SAID BODY PORTION ALSO HAVING A GAS MIXING REGION INTERMEDIATE THE INLETS AND THE OUTLET. AND A BLOCK OF POROUS MATERIAL IN EACH INLET UPSTREAM OF SAID MIXING REGION WHEREBY THE GASES TO BE MIXED MUST PASS THROUGH THE POROUS BLOCKS PRIOR TO REACHING SAID MIXING REGION, SUBSTANTIALLY ALL OF THE INTERSTICES OF SAID POROUS MATERIAL HAVING DIAMETERS OF THE ORDER OF .002 TO .005 INCHES AND OF SUCH SIZE THAT ON A BACKFIRE, REVERSE FLOW OF A SUBSTANTIAL AMOUNT OF THE ACTIVE PRODUCTS OF COMBUSTION WILL FLOW THROUGH THE POROUS BLOCKS AND BE DEACTIVATED SO THAT THEY WILL NOT IGNITE THE MIXTURE OF INCOMIING FRESH GASES WHEN THEY REACH THE MIXING REGION AFTER THE BACKFIRE AND THE DEACTIVATED PRODUCTS OF COMBUSTION ACT AS A BUFFER TO PREVENT IGNITION OF SUCH FRESH MIXTURE OF GASES BY ANY STILL-ACTIVE PRODUCTS OF COMBUSTION DOWNSRTEAM OF THE DEACTIVATED PRODUCTS OF COMBUSTION.
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) | 1955-11-18 | 1956-05-19 | 1956-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-18 | 1960-05-19 | 1960-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-18 | 1964-05-19 | 1964-11-18 | $7700.00 | Window Closed / Lapsed |