Patent US3073290A successfully refreshed from Google Patents.
US3073290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder liner construction particularly for internal combustion engines
Assignee: Daimler Benz AG
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Filing: 1959-07-01
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Granted: 1963-01-15
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Expires: 1979-07-01
Abstract
No abstract record available.
Inventors
- 👤 Stump Eugen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:34
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/02; F02F1/04; F02F1/06; F02F1/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/4927; Y10T29/49272
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A CYLINDER LINER CONSTRUCTION ADAPTED TO HAVE RECIPROCATING THEREIN A PISTON, PARTICULARLY FOR AN INTERNAL COMBUSTION ENGINE, HAVING IMPROVED WEARABILITY AND SLIDING CHARACTERISTICS, COMPRISING A STEEL SLEEVE, A LAYER OF CENTRIFUGALLY-CAST CAST IRON ON THE INSIDE OF SAID SLEEVE SERVING AS THE SLIDING SURFACE FOR SAID PISTON, THE THICKNESS OF SAID LAYER OF CAST IRON BEING LESS THAN 3 MILLIMETERS, AND COOLING MEANS INCLUDING A CASING SURROUNDING SAID STEEL SLEEVE ON THE OUTSIDE THEREOF AND COOLING RIBS RIGIDLY SECURED TO SAID CASING EXTENDING OUTWARDLY THEREFROM,
Claim 2
Dependent Claim
85 words
A CYLINDER LINER CONSTRUCTION ADAPTED TO HAVE RECIPROCATING THEREIN A PISTON, PARTICULARLY FOR AN INTERNAL COMBUSTION ENGINE, HAVING IMPROVED WEARABILITY AND SLIDING CHARACTERISTICS, COMPRISING A STEEL SLEEVE, A LAYER OF CENTRIFUGALLY-CAST CAST IRON ON THE INSIDE OF SAID SLEEVE SERVING AS THE SLIDING SURFACE FOR SAID PISTON, THE THICKNESS OF SAID LAYER OF CAST IRON BEING LESS THAN 3 MILLIMETERS, AND COOLING MEANS INCLUDING A CASING SURROUNDING SAID STEEL SLEEVE ON THE OUTSIDE THEREOF AND COOLING RIBS RIGIDLY SECURED TO SAID CASING EXTENDING OUTWARDLY THEREFROM,
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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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |