Patent US3273356A successfully refreshed from Google Patents.
US3273356A
Expired / Lapsed
US
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Heat exchanger-expander adapted to deliver refrigeration
Assignee: Arthur D Little Inc
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Filing: 1964-09-28
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Granted: 1966-09-20
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Expires: 1984-09-28
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:55
CPC Classifications
F; F25; F25J; F25J1/00; F25J1/02; F25J1/0243; F25J1/0257; F25J1/0275; F25J1/0276; F25B; F25B9/00; F25B9/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
AN APPARATUS SUITABLE FOR PROVIDING REFRIGERATION TO A LOCALIZED AREA, COMPRISING IN COMBINATION (A) A HOLLOW CYLINDER DEFINING A FLUID CHANNEL THEREIN; (B) SPACED FORAMINOUSD DISCS WITHIN SAID CHANNEL AFFIXED TO THE INTERNAL WALL THEREOF AND POSITIONED NORMAL TO THE DIRECTION OF FLUID FLOW; (C) TUBING HELICALLY WOUND AROUND THE EXTERNAL SURFACE OF SAID CYLINDER ALONG SUBSTANTIALLY ITS ENTIRE LENGTH AND PERMANENTLY AFFIXED THERETO, THE EXTERNAL SURFACE OF SAID TUBING BEING IN DIRECT HEAT TRANSFER CONTACT WITH SAID EXTERNAL SURFACE OF SAID CYLINDER; (D) MEANS ASSOCIATED WITH ONE OF END OF SAID TUBING FOR INTRODUCING A FLUID AT PRESSURE P1 AND TEMPERATURE T1 THERETO; (E) MEANS ASSOCIATED WITH THE OTHER END OF SAID TUBING FOR CONDUCTING SAID FLUID LEAVING SAID TUBING INTO SAID CHANNEL TO THE RETURNED IN OUT-OF-CONTACT HEAT EXCHANGE WITH SAID FLUID FLOWING THROUGH SAID TUBING WHEREIN THE EXTERNAL PATH OF SAID HEAT EX-
Claim 2
Independent Claim
146 words
AN APPARATUS SUITABLE FOR PROVIDING REFRIGERATION TO A LOCALIZED AREA, COMPRISING IN COMBINATION (A) A HOLLOW CYLINDER DEFINING A FLUID CHANNEL THEREIN; (B) SPACED FORAMINOUSD DISCS WITHIN SAID CHANNEL AFFIXED TO THE INTERNAL WALL THEREOF AND POSITIONED NORMAL TO THE DIRECTION OF FLUID FLOW; (C) TUBING HELICALLY WOUND AROUND THE EXTERNAL SURFACE OF SAID CYLINDER ALONG SUBSTANTIALLY ITS ENTIRE LENGTH AND PERMANENTLY AFFIXED THERETO, THE EXTERNAL SURFACE OF SAID TUBING BEING IN DIRECT HEAT TRANSFER CONTACT WITH SAID EXTERNAL SURFACE OF SAID CYLINDER; (D) MEANS ASSOCIATED WITH ONE OF END OF SAID TUBING FOR INTRODUCING A FLUID AT PRESSURE P1 AND TEMPERATURE T1 THERETO; (E) MEANS ASSOCIATED WITH THE OTHER END OF SAID TUBING FOR CONDUCTING SAID FLUID LEAVING SAID TUBING INTO SAID CHANNEL TO THE RETURNED IN OUT-OF-CONTACT HEAT EXCHANGE WITH SAID FLUID FLOWING THROUGH SAID TUBING WHEREIN THE EXTERNAL PATH OF SAID HEAT EX-
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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |