US3312205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engines
Assignee: BRISTOL SIDDELEY EHRLICH ENGIN
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Filing: 1965-07-19
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Granted: 1967-04-04
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Expires: 1985-07-19
Abstract
No abstract record available.
Inventors
- 👤 Ehrlich Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:03
CPC Classifications
F; F02; F02B; F02B25/00; F02B25/20; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; F02B2700/00; F02B2700/03; F02B2700/037; F02B2720/00; F02B2720/13; F02B2720/136
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A TWO-STROKE INTERNAL COMBUSTION ENGINE COMPRISING A CYLINDER, A PISTON RECIPROCABLE IN THE CYLINDER, A COMBUSTION SPACE WITHIN THE CYLINDER AND ABOVE THE PISTON, AN EXHAUST PORT SO DISPOSED IN THE CYLINDER WALL AS TO BE OPENED TO THE COMBUSTION SPACE BY THE PISTON TOWARDS THE END OF THE COMBUSTION STROKE THEREOF, A MAIN ENTRY PORT SO DISPOSED IN THE CYLINDER WALL AS TO BE OPENED TO THE COMBUSTION SPACE BY THE PISTON LATER IN THE COMBUSTION STROKE THEREOF THAN THE EXHAUST PORT, A SOURCE OF SCAVENGING AIR IN COMMUNICATION WITH THE MAIN ENTRY PORT, AN ADDITIONAL ENTRY PORT SO DISPOSED IN THE CYLINDER WALL AS TO BE OPENED TO THE COMBUSTION SPACE BY THE PISTON LATER IN THE COMBUSTION STROKE THEREOF THAN THE MAIN ENTRY PORT, AND A RESERVOIR IN COMMUNICATION WITH THE ADDITIONAL ENTRY PORT, THE RESERVOIR BEING IN COMMUNICATION WITH THE SAID SOURCE OF SCAVENGING AIR DURING PART OF THE COMBUSTION STROKE BUT BECOMING ISOLATED HEREFROM BEFORE THE MAIN ENTRY PORT IS OPENED BY
Claim 2
Dependent Claim
167 words
A TWO-STROKE INTERNAL COMBUSTION ENGINE COMPRISING A CYLINDER, A PISTON RECIPROCABLE IN THE CYLINDER, A COMBUSTION SPACE WITHIN THE CYLINDER AND ABOVE THE PISTON, AN EXHAUST PORT SO DISPOSED IN THE CYLINDER WALL AS TO BE OPENED TO THE COMBUSTION SPACE BY THE PISTON TOWARDS THE END OF THE COMBUSTION STROKE THEREOF, A MAIN ENTRY PORT SO DISPOSED IN THE CYLINDER WALL AS TO BE OPENED TO THE COMBUSTION SPACE BY THE PISTON LATER IN THE COMBUSTION STROKE THEREOF THAN THE EXHAUST PORT, A SOURCE OF SCAVENGING AIR IN COMMUNICATION WITH THE MAIN ENTRY PORT, AN ADDITIONAL ENTRY PORT SO DISPOSED IN THE CYLINDER WALL AS TO BE OPENED TO THE COMBUSTION SPACE BY THE PISTON LATER IN THE COMBUSTION STROKE THEREOF THAN THE MAIN ENTRY PORT, AND A RESERVOIR IN COMMUNICATION WITH THE ADDITIONAL ENTRY PORT, THE RESERVOIR BEING IN COMMUNICATION WITH THE SAID SOURCE OF SCAVENGING AIR DURING PART OF THE COMBUSTION STROKE BUT BECOMING ISOLATED HEREFROM BEFORE THE MAIN ENTRY PORT IS OPENED BY
References 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) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |