Patent US3021579A successfully refreshed from Google Patents.
US3021579A
Expired / Lapsed
US
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Mold for making composite metal bearings
Assignee: Motors Liquidation Co
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Filing: 1957-03-19
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Granted: 1962-02-20
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Expires: 1977-03-19
Abstract
No abstract record available.
Inventors
- 👤 Leonard J Schmid
- 👤 Donald R Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:42
CPC Classifications
B; B22; B22D; B22D19/00; B22D19/08; B22D19/085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A MOLD FOR USE IN CASTING A LINING ON A CYLINDRICAL MEMBER, SAID MOLD COMPRISING AN INVERTED CUP-SHAPED MEMBER DISPOSED WITHIN A CYLINDRICAL MEMBER AND HAVING ITS SIDE WALLS GENERALLY UNFORMLY SPATIALLY SEPARATED FROM THE CYLINDRICAL MEMBER TO DEFINE AN ANNULAR CASTING CAVITY THEREBETWEEN, SAID CUP-SHAPED MEMBER BEING SECURED TO THE LOWER EDGE OF THE CYLINDRICAL MEMBER THROUGHOUT ITS CIRCUMFERENCE THEREBY PROVIDING PROVIDING AN IMPERFORATE LOWER WALL FOR SAID CAVITY, AND A SHEET MATERIAL COVER HAVING A GENERALLY CENTRAL POURING APERTURE POSITIONED OVER SAID CUP-SHAPED MEMBER AND VERTICALLY SPACE THEREFROM.
Claim 2
Dependent Claim
90 words
A MOLD FOR USE IN CASTING A LINING ON A CYLINDRICAL MEMBER, SAID MOLD COMPRISING AN INVERTED CUP-SHAPED MEMBER DISPOSED WITHIN A CYLINDRICAL MEMBER AND HAVING ITS SIDE WALLS GENERALLY UNFORMLY SPATIALLY SEPARATED FROM THE CYLINDRICAL MEMBER TO DEFINE AN ANNULAR CASTING CAVITY THEREBETWEEN, SAID CUP-SHAPED MEMBER BEING SECURED TO THE LOWER EDGE OF THE CYLINDRICAL MEMBER THROUGHOUT ITS CIRCUMFERENCE THEREBY PROVIDING PROVIDING AN IMPERFORATE LOWER WALL FOR SAID CAVITY, AND A SHEET MATERIAL COVER HAVING A GENERALLY CENTRAL POURING APERTURE POSITIONED OVER SAID CUP-SHAPED MEMBER AND VERTICALLY SPACE 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) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |