US3334492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorption refrigeration systems
Assignee: Carrier Corp
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Filing: 1964-12-08
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Granted: 1967-08-08
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Expires: 1984-12-08
Abstract
No abstract record available.
Inventors
- 👤 Jr Louis H Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:14
CPC Classifications
F; F25; F25B; F25B49/00; F25B49/04; F25B15/00; F25B15/02; F25B15/06; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
AN ABSORPTION REFRIGERATION MACHINE COMPRISING AN ABSORBER, AN EVAPORATOR, A GENERATOR, AND A CONDENSER CONNECTED TO PROVIDE REFRIGERATION; PASSAGE MEANS FOR PASSING HEAT MEDIUM THROUGH SAID GENERATOR; A PUMP IN SAID PASSAGE MEANS FOR PASSING HEATING MEDIUM THROUGH SAID PASSAGE MEANS; AN ALTERNATING CURRENT ENERGIZED ELECTRIC MOTOR CONNECTED TO DRIVE SAID PUMP; SAID ALTERNATING CURRENT ELECTRIC MOTOR BEING CONNECTED WITH A SOURCE OF ALTERNATING CURRENT FOR ENERGIZING SAID MOTOR AND ELECTRICAL CONTROL MEANS INTERPOSED BETWEEN SAID SOURCE OF ALTERNATING CURRENT AND SAID MOTOR FOR CONTROLLING THE FLOW OF CURRENT TO SAID MOTOR TO AUTOMATICALLY CONTROL THE SPEED OF SAID ELECTRIC MOTOR IN RESPONSE TO THE REFRIGERATION LOAD IMPOSED ON SAID REFRIGERATION MACHINE TO CONTROL THE CAPACITY THEREOF SAID CONTROL INCLUDING SWITCH MEANS FOR VARYING THE EFFECTIVE POWER SUPPLIED TO SAID ELECTRIC MOTOR SAID SWITCH MEANS VARYING THE LENGTH OF TIME DURING
Claim 2
Dependent Claim
141 words
AN ABSORPTION REFRIGERATION MACHINE COMPRISING AN ABSORBER, AN EVAPORATOR, A GENERATOR, AND A CONDENSER CONNECTED TO PROVIDE REFRIGERATION; PASSAGE MEANS FOR PASSING HEAT MEDIUM THROUGH SAID GENERATOR; A PUMP IN SAID PASSAGE MEANS FOR PASSING HEATING MEDIUM THROUGH SAID PASSAGE MEANS; AN ALTERNATING CURRENT ENERGIZED ELECTRIC MOTOR CONNECTED TO DRIVE SAID PUMP; SAID ALTERNATING CURRENT ELECTRIC MOTOR BEING CONNECTED WITH A SOURCE OF ALTERNATING CURRENT FOR ENERGIZING SAID MOTOR AND ELECTRICAL CONTROL MEANS INTERPOSED BETWEEN SAID SOURCE OF ALTERNATING CURRENT AND SAID MOTOR FOR CONTROLLING THE FLOW OF CURRENT TO SAID MOTOR TO AUTOMATICALLY CONTROL THE SPEED OF SAID ELECTRIC MOTOR IN RESPONSE TO THE REFRIGERATION LOAD IMPOSED ON SAID REFRIGERATION MACHINE TO CONTROL THE CAPACITY THEREOF SAID CONTROL INCLUDING SWITCH MEANS FOR VARYING THE EFFECTIVE POWER SUPPLIED TO SAID ELECTRIC MOTOR SAID SWITCH MEANS VARYING THE LENGTH OF TIME DURING
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) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |