US3208229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vortex tube
Assignee: Fulton Cryogenics Inc
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Filing: 1965-01-28
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Granted: 1965-09-28
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Expires: 1985-01-28
Abstract
No abstract record available.
Inventors
- 👤 Charles D Fulton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:04
CPC Classifications
C; C03; C03B; C03B27/00; C03B27/04; C03B27/0404; C03B27/0417; C03B27/06; C03B27/062; C03B27/067; F; F25; F25B; F25B9/00; F25B9/02; F25B9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A VORTEX TUBE HAVING A HOLLOW CASING WITH A CYLINDRICAL INNER SURFACE AND A PLANAR END PORTION, A HOT GAS OUTLET TUBE ATTACHED TO AND OPENING THROUGH SAID PLANAR END PORTION, AND A GENERATOR IN SAID HOLLOW CASING, SAID GENERATOR COMPRISING A CYLINDRICAL BODY OF A DIAMETER SMALLER THAN THE INTERNAL DIAMETER OF SAID CYLINDRICAL INNER SURFACE OF SAID HOLLOW CASING, AN END PORTION OF SAID BODY BEING CHARACTERIZED BY A PLURALITY OF GROOVES TANGENTIAL TO AND TERMINATING IN A CIRCULAR VORTEX CHAMBER HAVING A DIAMETER LARGER THAN THE DIAMETER OF SAID HOT GAS TUBE, MEANS FOR HOLDING SAID BODY AGAINST SAID PLANAR END PORTION OF SAID HOLLOW CASING, AND MEANS PROVIDING A COLD GAS OUTLET FROM SAID VORTEX CHAMBER OF A SMALLER DIAMETER THAN THE DIAMETER OF SAID VORTEX CHAMBER, SAID COLD GAS OUTLET HAVING AN INTERIOR OPENING TAPERING AT LEAST IN PART TOWARD SAID VORTEX CHAMBER.
Claim 2
Dependent Claim
148 words
A VORTEX TUBE HAVING A HOLLOW CASING WITH A CYLINDRICAL INNER SURFACE AND A PLANAR END PORTION, A HOT GAS OUTLET TUBE ATTACHED TO AND OPENING THROUGH SAID PLANAR END PORTION, AND A GENERATOR IN SAID HOLLOW CASING, SAID GENERATOR COMPRISING A CYLINDRICAL BODY OF A DIAMETER SMALLER THAN THE INTERNAL DIAMETER OF SAID CYLINDRICAL INNER SURFACE OF SAID HOLLOW CASING, AN END PORTION OF SAID BODY BEING CHARACTERIZED BY A PLURALITY OF GROOVES TANGENTIAL TO AND TERMINATING IN A CIRCULAR VORTEX CHAMBER HAVING A DIAMETER LARGER THAN THE DIAMETER OF SAID HOT GAS TUBE, MEANS FOR HOLDING SAID BODY AGAINST SAID PLANAR END PORTION OF SAID HOLLOW CASING, AND MEANS PROVIDING A COLD GAS OUTLET FROM SAID VORTEX CHAMBER OF A SMALLER DIAMETER THAN THE DIAMETER OF SAID VORTEX CHAMBER, SAID COLD GAS OUTLET HAVING AN INTERIOR OPENING TAPERING AT LEAST IN PART TOWARD SAID VORTEX CHAMBER.
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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |