US3309183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive tools and methods of making such tools
Assignee: Carbond Corp
•
Filing: 1965-08-13
•
Granted: 1967-03-14
•
Expires: 1985-08-13
Abstract
No abstract record available.
Inventors
- 👤 George T Sermon
- 👤 Lescelius Toivo Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:37
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/14; C09K3/1436; C09K3/1445; B; B24; B24D; B24D18/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A METHOD OF PREPARING AN ABRASIVE TOOL HAVING A UNIFORMLY WEARING, STRONGLY BONDED CARBON MATRIX AND ABOUT 10 TO 90 WEIGHT PERCENT ABRASIVE GRAINS WHICH ARE ALSO UNIFORMLY DISPERSED IN THE MATRIX AND ARE OF GREATER HARDNESS THAN THE MATRIX COMPRISING: TUMBLING THE GRAINS WITH PARTICULATE SILICON TO ADHERE THE SILICON TO THE GRAINS BY MOLECULAR ATTRACTION; APPLYING TO THE GRAINS A SUGAR SOLUTION WHICH CAN BE DEVOLATIZED BY BAKING TO A STATE IN WHICH IT DOES NOT AFFECT THE PERFORMANCE OF THE TOOL; COATING THE GRAINS WITH SOLID PARTICULATE HYDROCARBON DERIVED FROM PITCH BY DISTILLATION THEREFROM OF LIQUID HYDROCARBONS AT A TEMPERATURE OF ABOUT 165%C. TO FORM COMPOSITE PARTICLES HAVING THE GRAINS COATED WITH SOLID HYDROCARBON; COMPRESSING THE MIX INTO A RIGID BODY; AND SLOWLY BAKING THE BODY IN AN INERT ATMOSPHERE AT A TEMPERATURE TO DEHYDROGENIZE THE HYDROCARBON AND DEVOLATIZE THE SUGAR SOLUTION TO FORM A CARBON MATRIX AND BOND THE GRAINS IN THE MATRIX.
Claim 2
Independent Claim
157 words
A METHOD OF PREPARING AN ABRASIVE TOOL HAVING A UNIFORMLY WEARING, STRONGLY BONDED CARBON MATRIX AND ABOUT 10 TO 90 WEIGHT PERCENT ABRASIVE GRAINS WHICH ARE ALSO UNIFORMLY DISPERSED IN THE MATRIX AND ARE OF GREATER HARDNESS THAN THE MATRIX COMPRISING: TUMBLING THE GRAINS WITH PARTICULATE SILICON TO ADHERE THE SILICON TO THE GRAINS BY MOLECULAR ATTRACTION; APPLYING TO THE GRAINS A SUGAR SOLUTION WHICH CAN BE DEVOLATIZED BY BAKING TO A STATE IN WHICH IT DOES NOT AFFECT THE PERFORMANCE OF THE TOOL; COATING THE GRAINS WITH SOLID PARTICULATE HYDROCARBON DERIVED FROM PITCH BY DISTILLATION THEREFROM OF LIQUID HYDROCARBONS AT A TEMPERATURE OF ABOUT 165%C. TO FORM COMPOSITE PARTICLES HAVING THE GRAINS COATED WITH SOLID HYDROCARBON; COMPRESSING THE MIX INTO A RIGID BODY; AND SLOWLY BAKING THE BODY IN AN INERT ATMOSPHERE AT A TEMPERATURE TO DEHYDROGENIZE THE HYDROCARBON AND DEVOLATIZE THE SUGAR SOLUTION TO FORM A CARBON MATRIX AND BOND THE GRAINS IN THE MATRIX.
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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |