US3208237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerating apparatus
Assignee: Carrier Corp
•
Filing: 1957-09-27
•
Granted: 1965-09-28
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Expires: 1977-09-27
Abstract
No abstract record available.
Inventors
- 👤 Karl M Gerteis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:01
CPC Classifications
F; F25; F25B; F25B43/00; F25B43/02; F25B31/00; Y; Y10; Y10S; Y10S417/00; Y10S417/902
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
83 words
IN A REFRIGERATION SYSTEM WHEREIN REFRIGERANT IS COMPRESSED, CONDENSED AND EVAPORATED AS IT CIRCULATES IN THE SYSTEM, ACOMPRESSOR FOR COMPRESSING THE REFRIGERANT PREPARATORY TO CIRCULATING THE REFRIGERANT IN THE SYSTEM AN ALTERNATING CURRENT MOTOR FOR DRIVING SAID COMPRESSOR, SAID MOTOR BEING IN HEAT EXCHANGE RELATION WITH THE COMPRESSORS, A SOURCE OF ALTERNATING CURRENT FOR ENERGIZING THE MOTOR CIRCUIT, AND MEANS FOR ESTABLISHING LOW AMPERAGE CURRENT FLOW THROUGH THE MOTOR WINDING DURING THE OFF CYCLE OF SAID MOTOR WHEREBY THE MOTOR WINDING SERVES AS
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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |