US3204423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control systems
Assignee: Carrier Corp
•
Filing: 1963-09-25
•
Granted: 1965-09-07
•
Expires: 1983-09-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Roy E Resh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:29
CPC Classifications
F; F25; F25B; F25B1/00; F25B1/04; F25B1/053; F25B2339/00; F25B2339/02; F25B2339/024; F25B2339/0242; F25B2339/04; F25B2339/047; F25B2700/00; F25B2700/15; F25B2700/151; F25B2700/21; F25B2700/2117; F25B2700/21171; F25B2700/21172; F25B2700/21173
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A REFRIGERATION SYSTEM COMPRISING: A CENTRIFUGAL COMPRESSOR CONNECTED TO COMPRESS REFRIGERANT IN A REFRIGERATION CIRCUIT; AN ELECTRIC MOTOR CONNECTED FOR DRIVING SAID CENTRIFUGAL COMPRESSOR; REFRIGERANT THROTTLING MEANS FOR REDUCING THE LOAD ON SAID ELECTRIC MOTOR; A SHADED POLE MOTOR CONNECTED TO CONTROL SAID REFRIGERANT THROTTLING MEANS, SAID SHADED POLE MOTOR HAVING AT LEAST ONE SHADING WINDING FOR CONTROLLING THE OPERATION THEREOF; SENSING MEANS FOR SENSING A LOAD ON SAID MOTOR; AND SAID SENSING MEANS BEING CONNECTED IN AN ELECTRICAL CIRCUIT SO AS TO ELECTRICALLY LOAD OR UNLOAD SAID SHADING WINDING IN A MANNER TO CONTROL SAID REFRIGERANT THROTTLING MEANS TO REDUCE THE LOAD ON SAID COM-U PRESSOR MOTOR WHEN SAID MOTOR APPROACHES A PREDETERMINED LOAD CONDITION.
Claim 2
Dependent Claim
116 words
A REFRIGERATION SYSTEM COMPRISING: A CENTRIFUGAL COMPRESSOR CONNECTED TO COMPRESS REFRIGERANT IN A REFRIGERATION CIRCUIT; AN ELECTRIC MOTOR CONNECTED FOR DRIVING SAID CENTRIFUGAL COMPRESSOR; REFRIGERANT THROTTLING MEANS FOR REDUCING THE LOAD ON SAID ELECTRIC MOTOR; A SHADED POLE MOTOR CONNECTED TO CONTROL SAID REFRIGERANT THROTTLING MEANS, SAID SHADED POLE MOTOR HAVING AT LEAST ONE SHADING WINDING FOR CONTROLLING THE OPERATION THEREOF; SENSING MEANS FOR SENSING A LOAD ON SAID MOTOR; AND SAID SENSING MEANS BEING CONNECTED IN AN ELECTRICAL CIRCUIT SO AS TO ELECTRICALLY LOAD OR UNLOAD SAID SHADING WINDING IN A MANNER TO CONTROL SAID REFRIGERANT THROTTLING MEANS TO REDUCE THE LOAD ON SAID COM-U PRESSOR MOTOR WHEN SAID MOTOR APPROACHES A PREDETERMINED LOAD CONDITION.
References Cited (Backward Citations)
US2790120A
Cited
US2777640A
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US2892916A
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US2972684A
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US2983111A
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US2991653A
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US3081604A
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US3121805A
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US3050611A
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US3111008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |