US3305142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerating apparatus
Assignee: DUCON CO
•
Filing: 1965-05-21
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Granted: 1967-02-21
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Expires: 1985-05-21
Abstract
No abstract record available.
Inventors
- 👤 Lawrence G Caldwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:14
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/54; B65D88/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
AN AERATING DEVICE FOR USE IN AN ENCLOSURE FOR AERATING PULVERANT MATERIAL WITHIN THE ENCLOSURE COMPRISING A LAYER OF RIGID, SEAMLESS, CHEMICALLY INERT, POLYMERIC MATERIAL HAVING A SMOOTH FLUIDIZING SURFACE, SAID MATERIAL BEING PERMEABLE TO GASES, A TROUGH-LIKE HOUSING SUBSTANTIALLY COEXTENSIVE IN SIZE WITH SAID POLYMERIC MATERIAL AND COUPLED TO PERIPHERAL PORTIONS OF SAID MATERIAL, CONDUIT MEANS FOR INTRODUCING A GAS INTO SAID HOUSING AT A LOCATION SUBSTANTIALLY EQUIDISTANT FROM THE ENDS OF SAID HOUSING, BAFFLE MEANS IN SAID HOUSING TO PREVENT DELIVERY OF GAS FROM SAID CONDUIT DIRECTLY TOWARD THE PLANE OF SAID POLYMERIC MATERIAL, A GENERALLY TRIANGULAR SHAPED PLENUM CHAMBER SUBSTANTIALLY EQUIDISTANT FROM THE ENDS OF SAID
Claim 2
Dependent Claim
109 words
AN AERATING DEVICE FOR USE IN AN ENCLOSURE FOR AERATING PULVERANT MATERIAL WITHIN THE ENCLOSURE COMPRISING A LAYER OF RIGID, SEAMLESS, CHEMICALLY INERT, POLYMERIC MATERIAL HAVING A SMOOTH FLUIDIZING SURFACE, SAID MATERIAL BEING PERMEABLE TO GASES, A TROUGH-LIKE HOUSING SUBSTANTIALLY COEXTENSIVE IN SIZE WITH SAID POLYMERIC MATERIAL AND COUPLED TO PERIPHERAL PORTIONS OF SAID MATERIAL, CONDUIT MEANS FOR INTRODUCING A GAS INTO SAID HOUSING AT A LOCATION SUBSTANTIALLY EQUIDISTANT FROM THE ENDS OF SAID HOUSING, BAFFLE MEANS IN SAID HOUSING TO PREVENT DELIVERY OF GAS FROM SAID CONDUIT DIRECTLY TOWARD THE PLANE OF SAID POLYMERIC MATERIAL, A GENERALLY TRIANGULAR SHAPED PLENUM CHAMBER SUBSTANTIALLY EQUIDISTANT FROM THE ENDS OF SAID
References Cited (Backward Citations)
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US2919160A
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US2883240A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |