US3122895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condenser fan control for refrigeration system
Assignee: Keeprite Products Ltd
•
Filing: 1962-01-08
•
Granted: 1964-03-03
•
Expires: 1982-01-08
Abstract
No abstract record available.
Inventors
- 👤 Norman W Woods
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:28
CPC Classifications
F; F25; F25B; F25B49/00; F25B49/02; F25B49/027; F25B2700/00; F25B2700/21; F25B2700/2116
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN A REFRIGERATION SYSTEM OF THE TYPE COMPRISING A COMPRESSOR, AN EVAPORATOR, A CONDENSER CONNECTED BETWEEN THE COMPRESSOR AND EVAPORATOR, A FAN FOR DIRECTING AIR OVER THE CONDENSER, AND A MOTOR FOR OPERATING SAID FAN, THE COMBINATION OF A SHAFT DRIVEN BY SAID MOTOR, A SEPARATE SHAFT FOR PROPELLING SAID FAN, A FLUID PRESSURE OPERATED CLUTCH FOR COUPLING AND UNCOUPLING SAID SHAFTS, A FLUID LINE CONNECTED WITH SAID CLUTCH FOR CONTROLLING THE OPERATION OF THE CLUTCH AND MEANS FOR CAUSING THE PRESSURE IN SAID FLUID LINE TO VARY IN ACCORDANCE WITH THE
Claim 2
Dependent Claim
92 words
IN A REFRIGERATION SYSTEM OF THE TYPE COMPRISING A COMPRESSOR, AN EVAPORATOR, A CONDENSER CONNECTED BETWEEN THE COMPRESSOR AND EVAPORATOR, A FAN FOR DIRECTING AIR OVER THE CONDENSER, AND A MOTOR FOR OPERATING SAID FAN, THE COMBINATION OF A SHAFT DRIVEN BY SAID MOTOR, A SEPARATE SHAFT FOR PROPELLING SAID FAN, A FLUID PRESSURE OPERATED CLUTCH FOR COUPLING AND UNCOUPLING SAID SHAFTS, A FLUID LINE CONNECTED WITH SAID CLUTCH FOR CONTROLLING THE OPERATION OF THE CLUTCH AND MEANS FOR CAUSING THE PRESSURE IN SAID FLUID LINE TO VARY IN ACCORDANCE WITH THE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |