Hermetic compressor
Abstract
Abstract A MULTI-CYLINDER HERMETIC COMPRESSOR WITH MEANS FOR VARYING ITS CAPACITY BY POSITIVELY CLOSING OFF THE FLOW OF SUCTION GAS FROM THE LOW SIDE OF THE SYSTEM TO ONE OR MORE CYLINDERS. THE SUCTION GAS IS NORMALLY DELIVERED TO A CHAMBER WHICH SUPPLIES AT LEAST ONE CYLINDER AT ALL TIMES. THE GAS THEN FLOWS THROUGH A PASSAGE TO ANOTHER CHAMBER SUPPLYING A SECOND CYLINDER OR GROUP OF CYLINDERS. A FLUID OPERATED CAPACITY CONTROL VALVE IS ARRANGED IN THIS PASSAGE TO POSITIVELY SHUT OFF FLOW TO THE SECOND CHAMBER TO PREVENT GAS FROM BEING SUPPLIED TO CYLINDERS RECEIVING GAS FROM THE SECOND CHAMBER. THE CAPACITY CONTROL VALVE IS OPERATED BY HIGH PRESSURE DISCHARGE GAS, THE FLOW OF WHICH IS CONTROLLED BY AN INTERNALLY MOUNTED SOLENOID VALVE LOCATED IN A LINE BETWEEN THE CAPACITY CONROL VALVE AND A SOURCE OF DISCHARGED GAS WITHIN THE COMPRESSOR.
Inventors
- 👤 F Michael Laucks
- 👤 Robert S Vaughn
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |