US3189085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning apparatus
Assignee: Westinghouse Electric Corp
•
Filing: 1960-09-13
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Granted: 1965-06-15
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Expires: 1980-09-13
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Eberhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:02
CPC Classifications
F; F25; F25B; F25B13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
APPARATUS FOR CONDITIONING THE AIR OF AN ENCLOSURE COMPRISING A HEAT EXCHANGE SUBJECT TO THE ACCUMULATION OF FROST, AN ELECTRIC HEATER ARRANGED TO DEFROST SAID HEAT EXCHANGER BY HEATING AIR FLOWING TO SAID HEAT EXCHANGER, MEANS FOR PROPELLING AIR OVER SAID HEATER AND THROUGH SAID HEAT EXCHANGER, AN ELECTRIC MOTOR FOR DRIVING SAID AIR PROPELLING MEANS, AND AN ELECTRICAL SUPPLY CIRCUIT FOR SAID MOTOR A DEVICE FOR EFFECTING ENERGIZATION OF SAID MOTOR AT A REDUCED RATE TO CAUSE AIR TO BE PROPELLED OVER SAID ELECTRIC HEATER AND THROUGH SAID HEAT EXCHANGER AT A REDUCED RATE, AND CONTROL MEANS RESPONSIVE TO AN EXCESSIVE ACCUMULATION OF FROST ON SAID HEAT EXCHANGER FOR SIMULTANEOUSLY EFFECTING ENERGIZATION OF SAID HEATER AND CONNECTING SAID DEVICE IN SAID CIRCUIT.
Claim 2
Dependent Claim
123 words
APPARATUS FOR CONDITIONING THE AIR OF AN ENCLOSURE COMPRISING A HEAT EXCHANGE SUBJECT TO THE ACCUMULATION OF FROST, AN ELECTRIC HEATER ARRANGED TO DEFROST SAID HEAT EXCHANGER BY HEATING AIR FLOWING TO SAID HEAT EXCHANGER, MEANS FOR PROPELLING AIR OVER SAID HEATER AND THROUGH SAID HEAT EXCHANGER, AN ELECTRIC MOTOR FOR DRIVING SAID AIR PROPELLING MEANS, AND AN ELECTRICAL SUPPLY CIRCUIT FOR SAID MOTOR A DEVICE FOR EFFECTING ENERGIZATION OF SAID MOTOR AT A REDUCED RATE TO CAUSE AIR TO BE PROPELLED OVER SAID ELECTRIC HEATER AND THROUGH SAID HEAT EXCHANGER AT A REDUCED RATE, AND CONTROL MEANS RESPONSIVE TO AN EXCESSIVE ACCUMULATION OF FROST ON SAID HEAT EXCHANGER FOR SIMULTANEOUSLY EFFECTING ENERGIZATION OF SAID HEATER AND CONNECTING SAID DEVICE IN SAID CIRCUIT.
References Cited (Backward Citations)
US2110693A
Cited
US2195924A
Cited
US2297970A
Cited
US2401560A
Cited
US2780442A
Cited
US2793834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |