US2648573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing combination
Assignee: Saint Gobain Abrasives Inc
•
Filing: 1950-03-24
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Granted: 1953-08-11
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Expires: 1970-03-24
Abstract
No abstract record available.
Inventors
- 👤 Jr William Maxwell Wheildon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:46
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/043; F16C2206/00; F16C2206/40; F16C2206/42; F16C2206/44; F16C2206/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A BEARING COMBINATION CONSISTING OF TWO ELEMENTS, ONE OF SAID ELEMENTS BEING A MASSIVE PIECE OF CRYSTALLINE ALUMINUM OXIDE 97% PURE COMPOSED OF DISCRETE GRANULES OF SAID ALUMINUM OXIDE AND HAVING A GROUND BEARING SURFACE, AND THE OTHER OF SAID ELEMENTS BEING A MOLDED PIECE OF BORON CARBIDE WHOSE COMPOSITION IS 98% TOTAL BORON AND CARBON AND RANGES BETWEEN THE EMPIRICAL FORMULAE B3.85 C AND B5.20 C SAID BORON CARBIDE ELEMENT HAVING A GROUND BEARING SURFACE.
Claim 2
Dependent Claim
76 words
A BEARING COMBINATION CONSISTING OF TWO ELEMENTS, ONE OF SAID ELEMENTS BEING A MASSIVE PIECE OF CRYSTALLINE ALUMINUM OXIDE 97% PURE COMPOSED OF DISCRETE GRANULES OF SAID ALUMINUM OXIDE AND HAVING A GROUND BEARING SURFACE, AND THE OTHER OF SAID ELEMENTS BEING A MOLDED PIECE OF BORON CARBIDE WHOSE COMPOSITION IS 98% TOTAL BORON AND CARBON AND RANGES BETWEEN THE EMPIRICAL FORMULAE B3.85 C AND B5.20 C SAID BORON CARBIDE ELEMENT HAVING A GROUND BEARING SURFACE.
References Cited (Backward Citations)
US2027788A
Cited
US2482205A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |