US3071122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supercharged opposed piston engine
Assignee: Nordberg Manufacturing Co
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Filing: 1960-05-31
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Granted: 1963-01-01
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Expires: 1980-05-31
Abstract
No abstract record available.
Inventors
- 👤 Hans U Lieberherr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:26
CPC Classifications
F; F02; F02D; F02D13/00; F02D13/02; F02D13/0261; F02B; F02B37/00; F02D13/0276; F02D23/00; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
IN AN OPPOSED PISTON ENGINE, A CYLINDER WITH INLET AND EXHAUST PORTS IN THE CYLINDER WALL AT OPPOSITE ENDS, EXHAUST AND INLET PISTONS OPPOSING EACH OTHER IN THE CYLINDER AND ADAPTED TO OPEN AND CLOSE THE PORTS, AN INLET SIDE INCLUDING A SUPERCHARGER AND AN INTERCOOLER FOR SUPPLYING COMPRESSED COOLED AIR TO THE CYLINDER, AND MEANS FOR REJECTING A PREDETERMINED AMOUNT OF AIR FROM THE CYLINDER TO THE INLET SIDE AFTER THE EXHAUST PISTON HAS COVERED THE EXHAUST PORTS DURING ITS COMPRESSION STROKE AT LEAST AT THE HIGHER LOADS, INCLUDING AT LEAST ONE COMPRESSION CONTROL VALVE AND PORT COMMUNICATING WITH THE INLET SIDE AT APPROXIMATELY THE MID POINT OF THE CYLINDER, AND MEANS FOR CLOSING THE COMPRESSION CONTROL VALVE AFTER THE INLET AND EXHAUST PISTONS HAVE CLOSED THE INLET AND EXHAUST PORTS TO REJECT AIR NORMALLY ENTRAPPED IN THE CYLINDER BACK TO THE INLET SIDE.
Claim 2
Dependent Claim
145 words
IN AN OPPOSED PISTON ENGINE, A CYLINDER WITH INLET AND EXHAUST PORTS IN THE CYLINDER WALL AT OPPOSITE ENDS, EXHAUST AND INLET PISTONS OPPOSING EACH OTHER IN THE CYLINDER AND ADAPTED TO OPEN AND CLOSE THE PORTS, AN INLET SIDE INCLUDING A SUPERCHARGER AND AN INTERCOOLER FOR SUPPLYING COMPRESSED COOLED AIR TO THE CYLINDER, AND MEANS FOR REJECTING A PREDETERMINED AMOUNT OF AIR FROM THE CYLINDER TO THE INLET SIDE AFTER THE EXHAUST PISTON HAS COVERED THE EXHAUST PORTS DURING ITS COMPRESSION STROKE AT LEAST AT THE HIGHER LOADS, INCLUDING AT LEAST ONE COMPRESSION CONTROL VALVE AND PORT COMMUNICATING WITH THE INLET SIDE AT APPROXIMATELY THE MID POINT OF THE CYLINDER, AND MEANS FOR CLOSING THE COMPRESSION CONTROL VALVE AFTER THE INLET AND EXHAUST PISTONS HAVE CLOSED THE INLET AND EXHAUST PORTS TO REJECT AIR NORMALLY ENTRAPPED IN THE CYLINDER BACK TO THE INLET SIDE.
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) | 1965-12-31 | 1966-07-02 | 1967-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-31 | 1970-07-02 | 1971-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-31 | 1974-07-02 | 1975-01-01 | $7700.00 | Window Closed / Lapsed |