Enclosed motor-compressor,particularly a small refrigerating machine
Abstract
Abstract AN ENCAPSULATED REFRIGERATION MOTOR-COMPRESSOR HERMETICALLY SEALED IN A CAPSULE AND IN WHICH THE MOTOR IS COOLED BY A SEPARATE OIL FLOW THAN THAT LUBRICATING THE COMPRESSOR. THE TWO INDEPENDENT OIL FLOWS ARE TAKEN FROM A COMMON OIL PUMP BY A TWIN CENTRIFUGAL PUMP. THE MOTOR HAS A VERTICALLY DISPOSED HOLLOW MOTOR SHAFT TO WHICH IS ATTACHED A LENGTH OF TUBING IN COMMUNICATION WITH THE BORE OF THE SHAFT DEFINING A FIRST CENTRIFUGAL OIL PUMP. A SECOND LENGTH OF TUBING IS MOUNTED CIRCUMFERENTIALLY AND AXIALLY OF THE FIRST-MENTIONED LENGTH OF TUBING SPACED OUTWARDLY THEREFROM DEFINING A SECOND CENTRIFUGRAL OIL PUMP DRIVEN IN CONJUNCTION WITH THE FIRST PUMP FROM THE COMMON MOTOR SHAFT. A SINGLE CENTRIFUGRAL PUMP CONSISTING OF A SINGLE LENGTH OF TUBING CAN PROVIDE THE TWO OILS FLOWS BY CONSTRUCTING IT WITH AN AXIALLY EXTENDING ENLARGMENT AT THE ZONE OF DIVISION OF THE DISCHARGE INTO TWO OUTPUT FLOWS.
Inventors
- 👤 Kund V Valbjorn
- 👤 Hans Ulrik Leffera
- 👤 Heinz Mahncke
- 👤 Bendt Wegge Fomer
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |