Patent US2438055A successfully refreshed from Google Patents.
US2828197A
Expired / Lapsed
US
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Metal bonded diamond wheels
Assignee: Saint Gobain Abrasives Inc
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Filing: 1954-09-15
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Granted: 1958-03-25
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Expires: 1974-09-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Paul W Blackmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:31
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/04; B24D3/06; B24D3/08; B24D18/00; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/1216; Y10T428/12167
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
METAL BONDED DIAMOND ABRASIVE COMPRISING CRUSHED DIAMOND IN AMOUNT FROM 1 VOLUME PERCENT TO 50 VOLUME PERCENT BONDED WITH SINTERED METAL BOND WHICH BY WEIGHT PERCENTAGES IS FROM 17% TO 25% ALPHA PLUS DELTA BRONZE OF COPPER ALLOYED WITH METAL SELECTED FROM THE GROUP CONSISTING OF TIN, CADMIUM, ZINC ALUMINUM, GALLIUM AND INDIUM AND MIXTURES THEREOF, SAID BROZE BEING FROM 15% TO 85% ALPHA BRONZE AND FROM 85% TO 15% DELTA BRONZE, THE REMAINDER OF SAID SINTERED METAL BOND BEING AT LEAST 99% FERRITIC IRON LIMITED TO A MAXIMUM OF .15% CARBON, SAID FERRITIC IRON HAVING A POROUS SKELETON FROM THE PORES OF WHICH ARE FILLED WITH THE BRONZE WHICH IS BRITTLE.
Claim 2
Dependent Claim
112 words
METAL BONDED DIAMOND ABRASIVE COMPRISING CRUSHED DIAMOND IN AMOUNT FROM 1 VOLUME PERCENT TO 50 VOLUME PERCENT BONDED WITH SINTERED METAL BOND WHICH BY WEIGHT PERCENTAGES IS FROM 17% TO 25% ALPHA PLUS DELTA BRONZE OF COPPER ALLOYED WITH METAL SELECTED FROM THE GROUP CONSISTING OF TIN, CADMIUM, ZINC ALUMINUM, GALLIUM AND INDIUM AND MIXTURES THEREOF, SAID BROZE BEING FROM 15% TO 85% ALPHA BRONZE AND FROM 85% TO 15% DELTA BRONZE, THE REMAINDER OF SAID SINTERED METAL BOND BEING AT LEAST 99% FERRITIC IRON LIMITED TO A MAXIMUM OF .15% CARBON, SAID FERRITIC IRON HAVING A POROUS SKELETON FROM THE PORES OF WHICH ARE FILLED WITH THE BRONZE WHICH IS BRITTLE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |