Patent US2904418A successfully refreshed from Google Patents.
US2904418A
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Method of making a grinding tool
Assignee: Vibro Corp of America
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Filing: 1955-02-25
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Granted: 1959-09-15
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Expires: 1975-02-25
Abstract
No abstract record available.
Inventors
- 👤 Fahnoe Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:50
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/24; B24; B24D; B24D18/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49988; Y10T29/49989
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A METHOD OF FORMING A GRINDING TOOL COMPRISING THE STEPS OF PROVIDING A REMOVABLE CYLINDRICAL LAYER OF BONDED ABRASIVE PARTICLES ON AN EXTREMELY FLAT SURFACE SUPPORTED BY A MASTER ELEMENT, AXIALLY SPACING A CIRCULAR SURFACE ON A HOLDING MEMBER FROM THE CYLINDRICAL LAYER ON THE MASTER ELEMENT WITH THE SURFACE AND THE LAYER FACING EACH OTHER, FLOWING A MOLTEN ALLOY INTO THE SPACE BETWEEN THE MASTER ELEMENT AND MEMBER TO JOIN THE CYLINDRICAL LAYER OF BONDED ABRASIVE PARTICLES TO THE HOLDING MEMBER WHEN THE MOLTEN METAL HARDENS, AND REMOVING THE MASTER ELEMENT FROM THE CYLINDRICAL LAYER OF BONDED MATERIAL.
Claim 2
Independent Claim
99 words
A METHOD OF FORMING A GRINDING TOOL COMPRISING THE STEPS OF PROVIDING A REMOVABLE CYLINDRICAL LAYER OF BONDED ABRASIVE PARTICLES ON AN EXTREMELY FLAT SURFACE SUPPORTED BY A MASTER ELEMENT, AXIALLY SPACING A CIRCULAR SURFACE ON A HOLDING MEMBER FROM THE CYLINDRICAL LAYER ON THE MASTER ELEMENT WITH THE SURFACE AND THE LAYER FACING EACH OTHER, FLOWING A MOLTEN ALLOY INTO THE SPACE BETWEEN THE MASTER ELEMENT AND MEMBER TO JOIN THE CYLINDRICAL LAYER OF BONDED ABRASIVE PARTICLES TO THE HOLDING MEMBER WHEN THE MOLTEN METAL HARDENS, AND REMOVING THE MASTER ELEMENT FROM THE CYLINDRICAL LAYER OF BONDED MATERIAL.
References Cited (Backward Citations)
US704399A
Cited
US1151317A
Cited
US2367286A
Cited
US2423293A
Cited
US2388020A
Cited
US2496352A
Cited
US2467596A
Cited
US2728124A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |