US3269458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for accurate and controlled cooling
Assignee: Individual
•
Filing: 1963-10-14
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Granted: 1966-08-30
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Expires: 1983-10-14
Abstract
No abstract record available.
Inventors
- 👤 Gail C Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:17
CPC Classifications
H; H05; H05H; H05H7/00; H05H7/14; H05H7/16; H01; H01J; H01J19/00; H01J19/28; H01J19/32; H01J19/36; H01J2893/00; H01J2893/0001; H01J2893/0012; H01J2893/0027
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
100 words
A METHOD FOR COOLING AND MAINTAINING THE TEMPERATURE OF A HEAT-EMITTING OBJECT AT A PREDETERMINED TEMPERATURE, COMPRISING THE STEPS OF: FILLING A PORTION OF A CLOSED VESSEL WITH A LIQUID COOLANT HAVING SAID PREDETERMINED TEMPERATURE AND FILLING THE REMAINDER OF THE VESSEL WITH VAPORS OF SAID COOLANT AT A PREDETERMINED PRESSURE; CIRCULATING SAID LIQUID COOLANT UNDER PRESSURIZED CONDITION FROM THE LIQUID-FILLED PORTION OF SAID VESSEL INTO HEAT-TRANSFER RELATIONSHIP WITH SAID OBJECT TO ABSORB HEAT THEREFROM AND BACK TO THE VAPOR-FILLED PORTION OF SAID VESSEL; SCATTERING SAID HEATED LIQUID COOLANT THROUGHOUT THE VAPOR-FILLED PORTION OF SAID VESSEL SO THAT VAPOR IS
References Cited (Backward Citations)
US1762762A
Cited
US2292946A
Cited
FR884950A
Cited
US2363118A
Cited
US2541861A
Cited
US2924635A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |