Engine cooling system
Abstract
Abstract 1. IN AN AIR-COOLED ENGINE OF THE MULTICYCLE INTERNAL COMBUSTION TYPE HAVING A CYLINDER AND A COMBUSTION CHAMBER, AND INCLUDING AN INTAKE AND EXHAUST VALVE ARRANGED ONE BEHIND THE OTHER RELATIVE TO A STREAM OF COOLING AIR, THE IMPROVEMENT COMPRISING MEANS FORMING AN INTAKE CHANNEL IN THE HEAD OF SAID CYLINDER AND AN EXHAUST CHANNEL, SAID CHANNELS BEING SEPARATED, ONE FROM THE OTHER, AND FORMING AN AIR PASSAGEWAY THEREBETWEEN AND AT ONE SIDE OF SAID REARMOST VALVE, AND MEANS FOR DIRECTING COOLING AIR AROUND BOTH THE INTAKE AND EXHAUST VALVES, ALONG A LINE GENERALLY PARALLEL TO THE LINE OF SAID INTAKE AND EXHAUST CHANNELS, AND MEANS FOR DIVIDING THE STREAM OF COOLING AIR AROUND THE REARMOST VALVE TO PROVIDE AIR FLOW THROUGH SAID PASSAGEWAY AROUND SAID ONE SIDE OF SAID REARMOST VALVE AND AROUND THE OTHER SIDE OF SAID REARMOST VALVE, SAID DIVIDER ELEMENT BEING POSITIONED TO PROVIDE A SUBSTANTIALLY EQUAL FLOW OF AIR AROUND EACH SIDE OF THE REARMOST VALVE, SAID INTAKE CHANNEL TERMINATING WITH A CHARGE RECEIVING PORT, SAID PORT FACING IN A DIRECTION GENERALLY PERPENDICULAR TO SAID LINE OF COOLING AIR FLOW.
Inventors
- 👤 D Frehe
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |