US3143396A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-actuated valve for controlling gas flow in driers
Assignee: Jet Stream Products Inc
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Filing: 1961-03-02
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Granted: 1964-08-04
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Expires: 1981-03-02
Abstract
No abstract record available.
Inventors
- 👤 John J Eige
- 👤 Raymond E Lundberg
- 👤 Harmon H Woodworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:26
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0173; D; D06; D06C; D06C7/00; D06C2700/00; D06C2700/09; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7786
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
IN A DRYER FOR MATERIALS WHEREIN THE MATERIALS ARE PASSED THROUGH A DRYING CHAMBER AND SUBJECTED TO THE FLOW OF GAS THERETHROUGH, THE IMPROVEMENT COMPRISING A SERIES OF PARTITIONS DIVIDING SAID CHAMBER INTO A PLURALITY OF COMPARTMENTS AND DIVIDING THE GAS FLOW INTO A PLURALITY OF PARALLEL PATHS FLOWING THROUGH SAID COMPARTMENTS, MEANS IN EACH OF SAID COMPARTMENTS FORMING AN ORIFICE THROUGH WHICH THE GAS MUST PASS, A MOVABLE VANE MOUNTED DOWNSTREAM FROM SAID ORIFICE AND HAVING AN ORIFICE CLOSING PLATE MOUNTED AT ONE END THEREOF, AND BIASING MEANS COMPRISING A COMBINATION OF A SPRING AND WEIGHTED LEVER ARM FOR NORMALLY HOLDING SAID VANE TO AN OPEN POSITION, SAID VANE BEING SITUATED SO THAT ONE SIDE THEREOF IS SUBJECTED TO THE FULL GAS PRESSURE AND THE OTHER SIDE IS SUBJECTED TO THE REDUCED PRESSURE OF THE GAS AFTER HAVING PASSED THROUGH THE ORIFICE.
Claim 2
Dependent Claim
143 words
IN A DRYER FOR MATERIALS WHEREIN THE MATERIALS ARE PASSED THROUGH A DRYING CHAMBER AND SUBJECTED TO THE FLOW OF GAS THERETHROUGH, THE IMPROVEMENT COMPRISING A SERIES OF PARTITIONS DIVIDING SAID CHAMBER INTO A PLURALITY OF COMPARTMENTS AND DIVIDING THE GAS FLOW INTO A PLURALITY OF PARALLEL PATHS FLOWING THROUGH SAID COMPARTMENTS, MEANS IN EACH OF SAID COMPARTMENTS FORMING AN ORIFICE THROUGH WHICH THE GAS MUST PASS, A MOVABLE VANE MOUNTED DOWNSTREAM FROM SAID ORIFICE AND HAVING AN ORIFICE CLOSING PLATE MOUNTED AT ONE END THEREOF, AND BIASING MEANS COMPRISING A COMBINATION OF A SPRING AND WEIGHTED LEVER ARM FOR NORMALLY HOLDING SAID VANE TO AN OPEN POSITION, SAID VANE BEING SITUATED SO THAT ONE SIDE THEREOF IS SUBJECTED TO THE FULL GAS PRESSURE AND THE OTHER SIDE IS SUBJECTED TO THE REDUCED PRESSURE OF THE GAS AFTER HAVING PASSED THROUGH THE ORIFICE.
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) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |