US3216484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cryogenic regenerator
Assignee: International Business Machines Corp
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Filing: 1960-09-09
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Granted: 1965-11-09
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Expires: 1980-09-09
Abstract
No abstract record available.
Inventors
- 👤 William E Gifford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:14
CPC Classifications
F; F25; F25J; F25J5/00; F25J5/002; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02G1/053; F02G1/057; F25B; F25B9/00; F25B9/14; F28; F28D; F28D17/00; F28D17/02; F25B2309/00; F25B2309/003; F25J2205/00; F25J2205/24; F25J2210/00; F25J2210/40; F25J2290/00; F25J2290/44; F28F; F28F2270/00; Y; Y10; Y10S; Y10S165/00; Y10S165/009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A VERY LOW TEMPERATURE REGENERATOR COMPRISING A SERIES OF SCREENS, EACH SCREEN HAVING OPPOSITE FACES AND THE SERIES EXTENDING NORMAL TO SAID FACES, AND AN ENCLOSURE OF RELATIVELY LOW HEAT CONDUCTIVITY HAVING INLET AND OUTLET PORTS HOLDING THE SCREENS IN SERIES AND CONDUCTING FLUID FLOW THERETHROUGH, EACH OF SAID SCREENS COMPRISING A SHEET OF MATERIAL SELECTED FROM THE GROUP CONSISTING OF COPPER, SILVER, ALUMINUM, CRYSTALLINE ALUMINUM OXIDE AND CRYSTALLINE QUARTZ AND A BODY OF MATERIAL SELECTED FROM THE GROUP CONSISTING OF LEAD, MERCURY AND ALLOYS THEREOF THERMALLY BONDED TO THE SHEET, SAID SHEET HAVING A PLURALITY OF APERTURES THERETHROUGH AND SAID SCREENS BEING SPACED APART TO PERMIT FLUID FLOW THROUGH SAID APERTURES AND ALONG THE FACES OF SAID SCREENS, SAID BODY BEING ADAPTED TO SERVE AS A SINK FOR HEAT RECEIVED FROM FLUID AND SAID SHEET BEING ADAPTED TO SUPPORT SAID BODY AND CONDUCT HEAT TRANSVERSELY OF THE SHEET THEREBY TO DISTRIBUTE HEAT UNIFORMLY THROUGH THE BODY.
Claim 2
Dependent Claim
157 words
A VERY LOW TEMPERATURE REGENERATOR COMPRISING A SERIES OF SCREENS, EACH SCREEN HAVING OPPOSITE FACES AND THE SERIES EXTENDING NORMAL TO SAID FACES, AND AN ENCLOSURE OF RELATIVELY LOW HEAT CONDUCTIVITY HAVING INLET AND OUTLET PORTS HOLDING THE SCREENS IN SERIES AND CONDUCTING FLUID FLOW THERETHROUGH, EACH OF SAID SCREENS COMPRISING A SHEET OF MATERIAL SELECTED FROM THE GROUP CONSISTING OF COPPER, SILVER, ALUMINUM, CRYSTALLINE ALUMINUM OXIDE AND CRYSTALLINE QUARTZ AND A BODY OF MATERIAL SELECTED FROM THE GROUP CONSISTING OF LEAD, MERCURY AND ALLOYS THEREOF THERMALLY BONDED TO THE SHEET, SAID SHEET HAVING A PLURALITY OF APERTURES THERETHROUGH AND SAID SCREENS BEING SPACED APART TO PERMIT FLUID FLOW THROUGH SAID APERTURES AND ALONG THE FACES OF SAID SCREENS, SAID BODY BEING ADAPTED TO SERVE AS A SINK FOR HEAT RECEIVED FROM FLUID AND SAID SHEET BEING ADAPTED TO SUPPORT SAID BODY AND CONDUCT HEAT TRANSVERSELY OF THE SHEET THEREBY TO DISTRIBUTE HEAT UNIFORMLY THROUGH THE BODY.
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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |