Patent US3304997A successfully refreshed from Google Patents.
US3304997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam-operated refrigeration system
Assignee: Carrier Corp
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Filing: 1965-05-24
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Granted: 1967-02-21
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Expires: 1985-05-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Louis H Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:07
CPC Classifications
F; F28; F28B; F28B1/00; F28B1/02; F25; F25B; F25B1/00; F25B1/04; F25B1/053; F25B27/00; F25B29/00; F25B29/003; F25B49/00; F25B49/02; F25B2339/00; F25B2339/02; F25B2339/024; F25B2339/0242
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A CONDENSING SYSTEM COMPRISING A HOUSING ADAPTED TO CONTAIN A CONDENSIBLE VAPOR, A PLURALITY OF TUBING IN SAID HOUSING THROUGH WHICH A CONDENSING MEDIUM IS PASSED IN HEAT EXCHANGE RELATION WITH VAPOR EXTERIORLY THEREOF FOR CONDENSING SAID CONDENSIBLE VAPOR, MEANS FOR PASSING INTO SAID HOUSING A FLUID WHICH IS NORMALLY A NONCONDENSIBLE VAPOR WITHIN SAID HOUSING AND BLANKETING THE EXTERIOR OF SAID TUBES WITH SAID NONCONDENSIBLE VAPOR THEREBY LIMITING THE CONDENSING CAPACITY OF SAID TUBES, AND MEANS FOR SELECTIVELY REGULATING THROUGHOUT A RANGE THE QUANTITY OF SAID NONCONDENSIBLE VAPOR BLANKETING SAID TUBES, THEREBY REGULATING THE CONDENSING RATE OF SAID CONDENSIBLE VAPOR.
Claim 2
Dependent Claim
101 words
A CONDENSING SYSTEM COMPRISING A HOUSING ADAPTED TO CONTAIN A CONDENSIBLE VAPOR, A PLURALITY OF TUBING IN SAID HOUSING THROUGH WHICH A CONDENSING MEDIUM IS PASSED IN HEAT EXCHANGE RELATION WITH VAPOR EXTERIORLY THEREOF FOR CONDENSING SAID CONDENSIBLE VAPOR, MEANS FOR PASSING INTO SAID HOUSING A FLUID WHICH IS NORMALLY A NONCONDENSIBLE VAPOR WITHIN SAID HOUSING AND BLANKETING THE EXTERIOR OF SAID TUBES WITH SAID NONCONDENSIBLE VAPOR THEREBY LIMITING THE CONDENSING CAPACITY OF SAID TUBES, AND MEANS FOR SELECTIVELY REGULATING THROUGHOUT A RANGE THE QUANTITY OF SAID NONCONDENSIBLE VAPOR BLANKETING SAID TUBES, THEREBY REGULATING THE CONDENSING RATE OF SAID CONDENSIBLE VAPOR.
References Cited (Backward Citations)
US2924635A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |