US3153990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine
Assignee: Motors Liquidation Co
•
Filing: 1962-01-26
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Granted: 1964-10-27
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Expires: 1982-01-26
Abstract
No abstract record available.
Inventors
- 👤 Theodore W Kunzog
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:05
CPC Classifications
F; F16; F16J; F16J10/00; F16J10/02; F16J10/04; B; B22; B22F; B22F7/00; B22F7/002; B22F7/06; B22F7/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49647; Y10T29/49668; Y10T29/49677; Y10T29/49826; Y10T29/49885
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN A METHOD FOR MAKING CYLINDER LINERS FOR INTERNAL COMBUSTION ENGINES AND THE LIKE, THE STEPS COMPRISING; PROVIDING A LENGTH OF SHEET METAL HAVING A POROUS FERROUS METAL LAYER COEXTENSIVELY BONDED METALLURGICALLY TO ONE SURFACE THEREOF SAID LAYER HAVING A DENSITY ABOVE ABOUT 6.25 GRAMS PER CC., FORMING THE STRIP INTO A CYLINDRICAL SHAPE WITH THE POROUS METAL LAYER ON THE INSIDE OF THE CYLINDRICAL SHAPE, WELDING THE SEAM ON ONE SIDE ONLY OF SAID SHAPE FOR PERMANENTLY JOINING THE SHEET METAL AND THEN FINISHING THE POROUS METAL INNER SURFACE TO A PRECISION DIMENSION.
Claim 2
Dependent Claim
94 words
IN A METHOD FOR MAKING CYLINDER LINERS FOR INTERNAL COMBUSTION ENGINES AND THE LIKE, THE STEPS COMPRISING; PROVIDING A LENGTH OF SHEET METAL HAVING A POROUS FERROUS METAL LAYER COEXTENSIVELY BONDED METALLURGICALLY TO ONE SURFACE THEREOF SAID LAYER HAVING A DENSITY ABOVE ABOUT 6.25 GRAMS PER CC., FORMING THE STRIP INTO A CYLINDRICAL SHAPE WITH THE POROUS METAL LAYER ON THE INSIDE OF THE CYLINDRICAL SHAPE, WELDING THE SEAM ON ONE SIDE ONLY OF SAID SHAPE FOR PERMANENTLY JOINING THE SHEET METAL AND THEN FINISHING THE POROUS METAL INNER SURFACE TO A PRECISION DIMENSION.
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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) | 1967-10-27 | 1968-04-27 | 1968-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-27 | 1972-04-27 | 1972-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-27 | 1976-04-27 | 1976-10-27 | $7700.00 | Window Closed / Lapsed |