US3115126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removable insert for internal combustion chambers
Assignee: Individual
•
Filing: 1961-06-08
•
Granted: 1963-12-24
•
Expires: 1981-06-08
Abstract
No abstract record available.
Inventors
- 👤 Charles O Spencer
- 👤 Boyd L Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:16
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/24; F02F1/02; F02F1/10; F02F1/16; F02F1/166; F02F1/26; F02F1/36; F02F1/38; F02B; F02B1/00; F02B1/02; F02B1/04; F02B3/00; F02B3/06; F02F2001/008; F02F2001/244; F02F2001/247; F02F2001/249
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
IN AN INTERNAL COMBUSTION ENGINE AND INCLUDING A CYLINDER BLOCK HAVING A COMBUSTION CHAMBER AND A CYLINDER HEAD REMOVABLY ATTACHED TO THE BLOCK AND CLOSING SAID CHAMBER, SAID HEAD BEING HOLLOW IN THE REGION ABOVE SAID CHAMBER, AN INSERT RECEIVED IN SAID CYLINDER HEAD AND FORMING AT LEAST A PORTION OF THE COMBUSTION CHAMBER THEREOF, SAID INSERT BEING HOLLOW, AND MEANS REMOVABLY ATTACHING SAID INSERT TO THE CYLINDER HEAD INCLUDING MEANS BY WHICH THE INTERIOR OF THE INSERT IS CONNECTED TO THE INTERIOR OF SAID HEAD.
Claim 2
Dependent Claim
86 words
IN AN INTERNAL COMBUSTION ENGINE AND INCLUDING A CYLINDER BLOCK HAVING A COMBUSTION CHAMBER AND A CYLINDER HEAD REMOVABLY ATTACHED TO THE BLOCK AND CLOSING SAID CHAMBER, SAID HEAD BEING HOLLOW IN THE REGION ABOVE SAID CHAMBER, AN INSERT RECEIVED IN SAID CYLINDER HEAD AND FORMING AT LEAST A PORTION OF THE COMBUSTION CHAMBER THEREOF, SAID INSERT BEING HOLLOW, AND MEANS REMOVABLY ATTACHING SAID INSERT TO THE CYLINDER HEAD INCLUDING MEANS BY WHICH THE INTERIOR OF THE INSERT IS CONNECTED TO THE INTERIOR OF SAID HEAD.
References Cited (Backward Citations)
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Cited
GB172879A
Cited
US1621560A
Cited
GB180302A
Cited
US1526744A
Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |