US3207141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine with ignition cell
Assignee: Pure Oil Co
•
Filing: 1963-05-14
•
Granted: 1965-09-21
•
Expires: 1983-05-14
Abstract
No abstract record available.
Inventors
- 👤 Jr John H Freeman
- 👤 Wilson D Dysart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:48
CPC Classifications
F; F02; F02B; F02B19/00; F02B19/10; F02B19/1004; F02B19/1014; F02B19/1019; F02B19/108; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
IN AN INTERNAL COMBUSTION ENGINE, CYLINDER HAVING A FLAT HEAD, A PISTON RECIPROCALLY MOUNTED IN SAID CYLINDER, A COMBUSTION CHAMBER DEFINED BY SAID CYLINDER AND PISTON AT TOP DEAD-CENTER, MEANS FOR INTRODUCING A FUEL-AIR MIXTURE INTO SAID COMBUSTION CHAMBER, AND IGNITION CHAMBER SMALLER THAN SAID COMBUSTION CHAMBER AND COMMUNICATING WITH SAID COMBUSTION CHAMBER THROUGH AN ORIFICE, SAID ORIFICE HAVING A CROSS-SECTIONAL AREA WITHIN THE RANGE OF ABOUG 0012 TO 0.025 SQUARE INCH AND A LENGTH WITHIN THE RANGE OF ABOUT 0.35 TO 0.90 INCH, WHEREBY FLUIDS MAY ENTER SAID IGNITION CHAMBER UPON THE COMPRESSION STROKE OF SAID CYLINDER, SAID ORIFICE BEING POSITIONED SUCH THAT THE CENTER THEREOF IS SUBSTANTIALLY IN LINE WITH THE AXIS OF SAID CYLINDER, MEANS FOR INTRODUCING A FUEL INTO SAID IGNITION CHAMBER AT A TEMPERATURE AND PRESSURE SUCH THAT FUEL FORMS AND IGNITABLE MIXTURE WITH A PORTION OF SAID FUEL-AIR MIXTURE, AND MEANS FOR IGNITING SAID FUEL-AIR MIXTURE.
Claim 2
Dependent Claim
152 words
IN AN INTERNAL COMBUSTION ENGINE, CYLINDER HAVING A FLAT HEAD, A PISTON RECIPROCALLY MOUNTED IN SAID CYLINDER, A COMBUSTION CHAMBER DEFINED BY SAID CYLINDER AND PISTON AT TOP DEAD-CENTER, MEANS FOR INTRODUCING A FUEL-AIR MIXTURE INTO SAID COMBUSTION CHAMBER, AND IGNITION CHAMBER SMALLER THAN SAID COMBUSTION CHAMBER AND COMMUNICATING WITH SAID COMBUSTION CHAMBER THROUGH AN ORIFICE, SAID ORIFICE HAVING A CROSS-SECTIONAL AREA WITHIN THE RANGE OF ABOUG 0012 TO 0.025 SQUARE INCH AND A LENGTH WITHIN THE RANGE OF ABOUT 0.35 TO 0.90 INCH, WHEREBY FLUIDS MAY ENTER SAID IGNITION CHAMBER UPON THE COMPRESSION STROKE OF SAID CYLINDER, SAID ORIFICE BEING POSITIONED SUCH THAT THE CENTER THEREOF IS SUBSTANTIALLY IN LINE WITH THE AXIS OF SAID CYLINDER, MEANS FOR INTRODUCING A FUEL INTO SAID IGNITION CHAMBER AT A TEMPERATURE AND PRESSURE SUCH THAT FUEL FORMS AND IGNITABLE MIXTURE WITH A PORTION OF SAID FUEL-AIR MIXTURE, AND MEANS FOR IGNITING SAID FUEL-AIR MIXTURE.
References Cited (Backward Citations)
US1957541A
Cited
US2758576A
Cited
US2803230A
Cited
US2914043A
Cited
US3066661A
Cited
US3066662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |