Compressor
Abstract
Abstract THE PRESENT INVENTION IS DIRECTED TO RECIPROCATING COMPRESSORS FOR USE IN REFRIGERATION SYSTEMS COMPRISING A HOUSING MOUNTING THEREWITHIN A COMPRESSOR BLOCK HAVING A VERTICALLY EXTENDING CRANKSHAFT JOURNALED THEREIN WHICH IS OPERATIVELY CONNECTED TO ONE OR MORE PISTONS RECIPROCATINGLY MOUNTED IN ONE OR MORE CYLINDERS DEFINED BY THE COMPRESSOR BLOCK. THE CRANKSHAFT COMPRISES AN INTEGRAL UPPER CRANK MEMBER FORMED WITH BEARING, ECCENTRIC AND COUNTERWEIGHT PORTIONS, AND A LOWER TUBULAR MEMBER WHICH INTERFITS AT ITS UPPER END WITH THE ECCENTRIC AND COUNTERWEIGHT PORTIONS OF THE CRANK MEMBER AND SUPPORTS GENERALLY INTERMEDIATE THE UPPER AND LOWER ENDS THE ROTOR OF THE MOTOR MECHANISM. A CRANKSHAFT OF THIS CHARACTER HAS SIGNIFICANT MANUFACTURING AND OPERATIONAL ADVANTAGES SINCE THE TUBULAR MEMBER UTILIZES A LESSER AMOUNT OF MATERIAL WITHOUT SACRIFICE IN STRENGTH AND ACHIEVES IMPROVED OIL PUMPING ACTION, AND THE CRANK MEMBER, IF PRODUCED BY POWDER METALLURGY, REQUIRES LESS MACHINING AND THE BALANCE PROPERTIES ARE IMPROVED.
Inventors
- 👤 Fred S Retan
Bibliographic Details
Claims Analysis
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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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |