US2735260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laubender
Assignee: —
•
Filing: —
•
Granted: 1956-02-21
•
Expires: 1973-02-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:47
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/18; F02F1/22; F02B; F02B77/00; F02B77/04; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
CARBON DEPOSIT FORMATION PREVENTING MEANS FOR AN INTERNAL COMBUSTION ENGINE COMPRISING A CYLINDER, AN EXHAUST PORT FORMED IN THE WALL OF SAID CYLINDER, AN EXHAUST DUCT COMMUNICATING WITH SAID PORT, AND MEANS DEFINING A COMBUSTION SPACE WITHIN SAID CYLINDER AND ADJACENT TO SAID PORT, SAID FORMATION PREVENTING MEANS COMPRISING EXHAUST GAS GUIDING MEANS DEFINING A CONTINUOUS BURN-OFF PASSAGE WHICH COMMUNICATES DIRECTLY BETWEEN A PORTION OF SAID EXHAUST DUCT IMMEDIATELY ADJACENT TO SAID PORT AND A PORTION OF SAID COMBUSTION SPACE ADJACENT TO SAID
Claim 2
Dependent Claim
83 words
CARBON DEPOSIT FORMATION PREVENTING MEANS FOR AN INTERNAL COMBUSTION ENGINE COMPRISING A CYLINDER, AN EXHAUST PORT FORMED IN THE WALL OF SAID CYLINDER, AN EXHAUST DUCT COMMUNICATING WITH SAID PORT, AND MEANS DEFINING A COMBUSTION SPACE WITHIN SAID CYLINDER AND ADJACENT TO SAID PORT, SAID FORMATION PREVENTING MEANS COMPRISING EXHAUST GAS GUIDING MEANS DEFINING A CONTINUOUS BURN-OFF PASSAGE WHICH COMMUNICATES DIRECTLY BETWEEN A PORTION OF SAID EXHAUST DUCT IMMEDIATELY ADJACENT TO SAID PORT AND A PORTION OF SAID COMBUSTION SPACE ADJACENT TO SAID
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) | 1959-02-20 | 1959-08-22 | 1960-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-20 | 1963-08-22 | 1964-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-20 | 1967-08-22 | 1968-02-21 | $7700.00 | Window Closed / Lapsed |