Patent US3309574A successfully refreshed from Google Patents.
US3309574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective cooling system
Assignee: RCA Corp
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Filing: 1964-04-30
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Granted: 1967-03-14
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Expires: 1984-04-30
Abstract
No abstract record available.
Inventors
- 👤 Don A Colby
- 👤 Walter C Painter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:36
CPC Classifications
H; H02; H02H; H02H5/00; H02H5/08; H02H5/086
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A PROTECTIVE COOLING SYSTEM FOR COOLING HEAT GENERATING ELECTRICAL EQUIPMENT COMPRISING: (A) A FLUID CIRCULATOR DISPOSED TO DIRECT A STREAM OF COOLING FLUID ONTO SAID EQUIPMENT TO COOL THE LATTER; (B) A THERMOSTAT; (C) A HEATED ELEMENT DISPOSED IN A CONTINUOUS HEATEXCHANGE RELATIONSHIP WITH SAID THERMOSTAT, SAID THERMOSTAT OPERATING IN RESPONSE TO THE HEAT GENERATED BY SAID HEATED ELEMENT, SAID HEATED ELEMENT AND SAID THERMOSTAT BEING DISPOSED IN SAID STREAM OF COOLING FLUID CAUSING SAID HEATED ELEMENT TO BE COOLED BELOW THE TEMPERATURE AT WHICH SAID THERMOSTAT IS ACTUATED; (D) MEANS TO ENERGIZE SAID FLUID CIRCULATOR; AND (E) MEANS TO SEND CURRENT TO SAID EQUIPMENT AND TO SAID HEATED ELEMENT THROUGH SAID THERMOSTAT, SAID THERMOSTAT BEING ADAPTED TO BE ACTUATED BY THE HEAT FROM SAID HEATED ELEMENT IN THE ABSENCE OF SAID STREAM OF COOLING FLUID.
Claim 2
Dependent Claim
136 words
A PROTECTIVE COOLING SYSTEM FOR COOLING HEAT GENERATING ELECTRICAL EQUIPMENT COMPRISING: (A) A FLUID CIRCULATOR DISPOSED TO DIRECT A STREAM OF COOLING FLUID ONTO SAID EQUIPMENT TO COOL THE LATTER; (B) A THERMOSTAT; (C) A HEATED ELEMENT DISPOSED IN A CONTINUOUS HEATEXCHANGE RELATIONSHIP WITH SAID THERMOSTAT, SAID THERMOSTAT OPERATING IN RESPONSE TO THE HEAT GENERATED BY SAID HEATED ELEMENT, SAID HEATED ELEMENT AND SAID THERMOSTAT BEING DISPOSED IN SAID STREAM OF COOLING FLUID CAUSING SAID HEATED ELEMENT TO BE COOLED BELOW THE TEMPERATURE AT WHICH SAID THERMOSTAT IS ACTUATED; (D) MEANS TO ENERGIZE SAID FLUID CIRCULATOR; AND (E) MEANS TO SEND CURRENT TO SAID EQUIPMENT AND TO SAID HEATED ELEMENT THROUGH SAID THERMOSTAT, SAID THERMOSTAT BEING ADAPTED TO BE ACTUATED BY THE HEAT FROM SAID HEATED ELEMENT IN THE ABSENCE OF SAID STREAM OF COOLING FLUID.
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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |