Patent US3469947A successfully refreshed from Google Patents.
US3469947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Atmosphere generator
Assignee: Whirlpool Corp
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Filing: 1965-01-12
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Granted: 1969-09-30
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Expires: 1985-01-12
Abstract
No abstract record available.
Inventors
- 👤 Chauncey R Drury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:39
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/70; A23B2/704; A23B2/7045; A23B2/708
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A GENERATION FOR GENERATING AN ATMOSPHERE RICH IN CARBON DIOXIDE BUT LOW IN OXYGEN, COMPRISING: A CONTAINER; MEANS FOR SUPPORTING A FLUID PERMEABLE MASS OF SOLID CARBON IN SAID CONTAINER WITH A GAS SPACE ABOVE SAID MASS AND A GAS SPACE BELOW SAID MASS; MEANS FOR INITIATING BURNING OF SAID CARBON; MEANS FOR FORCING AIR UNDER PRESSURE INTO SAID SPACE BELOW SAID CARBON SAID CARBON MASS FOR UPWARD FLOW THROUGH SAID BURNING MASS OF CARBON TO PRODUCE GASES CONTAINING CARBON DIOXIDE, CARBON MONOXIDE AND NITROGEN AND OTHER INERT GASES OF SAID AIR IN SAID SPACE ABOVE SAID MASS; MEANS FOR SUPPLYING ADDITIONAL AIR TO SAID GASES IN SAID GAS SPACE ABOVE SAID MADD TO PROVIDE A MIXTURE; MEANS FOR PROVIDING A FLUID PERMEABLE BED OF AN OXIDATION CATALYST; MEANS FOR HEATING SAID CATALYST TO A CATALYZING TEMPERATURE; AND MEANS FOR FORCING SAID MIXTURE OF SAID
Claim 2
Dependent Claim
145 words
A GENERATION FOR GENERATING AN ATMOSPHERE RICH IN CARBON DIOXIDE BUT LOW IN OXYGEN, COMPRISING: A CONTAINER; MEANS FOR SUPPORTING A FLUID PERMEABLE MASS OF SOLID CARBON IN SAID CONTAINER WITH A GAS SPACE ABOVE SAID MASS AND A GAS SPACE BELOW SAID MASS; MEANS FOR INITIATING BURNING OF SAID CARBON; MEANS FOR FORCING AIR UNDER PRESSURE INTO SAID SPACE BELOW SAID CARBON SAID CARBON MASS FOR UPWARD FLOW THROUGH SAID BURNING MASS OF CARBON TO PRODUCE GASES CONTAINING CARBON DIOXIDE, CARBON MONOXIDE AND NITROGEN AND OTHER INERT GASES OF SAID AIR IN SAID SPACE ABOVE SAID MASS; MEANS FOR SUPPLYING ADDITIONAL AIR TO SAID GASES IN SAID GAS SPACE ABOVE SAID MADD TO PROVIDE A MIXTURE; MEANS FOR PROVIDING A FLUID PERMEABLE BED OF AN OXIDATION CATALYST; MEANS FOR HEATING SAID CATALYST TO A CATALYZING TEMPERATURE; AND MEANS FOR FORCING SAID MIXTURE OF SAID
References Cited (Backward Citations)
US556991A
Cited
US1995274A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |