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US3212869A
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Tool for finishing toothed elements
Assignee: Michigan Tool Co
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Filing: 1961-10-17
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Granted: 1965-10-19
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Expires: 1981-10-17
Abstract
No abstract record available.
Inventors
- 👤 John W Decker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:16
CPC Classifications
B; B23; B23F; B23F21/00; B23F21/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
AN ABRASIVE GEAR-LIKE FINISHING TOOL HAVING TOOTHED ELEMENTS THEREON CONJUGATE TO THE TOOTHED ELEMENTS ON A WORKPIECE TO BE FINISHED, AT LEAST THE OWRKING SURFACES OF SAID TOOTHED ELEMENTS OF SAID TOOL COMPRISED OF AN ABRASIVE MATERIAL INCLUDING A MATRIX OF A CURED RESIN BONDING AGENT HAVING ABRASIVE PARTICLES AND FILLERS DISTRIBUTED THERETHROUGH AND TENACIOUSLY BONDED THEREIN, SAID BONDING AGENT CONSISTINE ESSENTIALLY OF A COPOLYMER CONSISTING OF THE REACTION PRODUCT OF A REACTIVE POLYAMIDE RESIN HAVING AN AMINE VALUE OF FROM ABOUT 80 TO ABOUT 400 AND AN EPOXY RESIN HAVING AN EPOXIDE EQUIVALENT VALUE OF FROM ABOUT 175 TO ABOUT 200 AND PRESENT IN THE PROPORTIONS RANGING FROM ABOUT 15% TO ABOUT 65% BY WEIGHT SAID POLYAMIDE RESIN AND THE BALANCE SAID EPOXY RESIN, SAID ABRASIVE MATERIAL COMPRISING FROM ABOUT 20% TO ABOUT 80% BY WEIGHT SAID BONDING AGENT, FROM ABOUT 20% TO ABOUT 80% BY WEIGHT SAID ABRASIVE PARTICLES, AND UP TO ABOUT 50% BY WEIGHT OF SAID FILLERS.
Claim 2
Dependent Claim
161 words
AN ABRASIVE GEAR-LIKE FINISHING TOOL HAVING TOOTHED ELEMENTS THEREON CONJUGATE TO THE TOOTHED ELEMENTS ON A WORKPIECE TO BE FINISHED, AT LEAST THE OWRKING SURFACES OF SAID TOOTHED ELEMENTS OF SAID TOOL COMPRISED OF AN ABRASIVE MATERIAL INCLUDING A MATRIX OF A CURED RESIN BONDING AGENT HAVING ABRASIVE PARTICLES AND FILLERS DISTRIBUTED THERETHROUGH AND TENACIOUSLY BONDED THEREIN, SAID BONDING AGENT CONSISTINE ESSENTIALLY OF A COPOLYMER CONSISTING OF THE REACTION PRODUCT OF A REACTIVE POLYAMIDE RESIN HAVING AN AMINE VALUE OF FROM ABOUT 80 TO ABOUT 400 AND AN EPOXY RESIN HAVING AN EPOXIDE EQUIVALENT VALUE OF FROM ABOUT 175 TO ABOUT 200 AND PRESENT IN THE PROPORTIONS RANGING FROM ABOUT 15% TO ABOUT 65% BY WEIGHT SAID POLYAMIDE RESIN AND THE BALANCE SAID EPOXY RESIN, SAID ABRASIVE MATERIAL COMPRISING FROM ABOUT 20% TO ABOUT 80% BY WEIGHT SAID BONDING AGENT, FROM ABOUT 20% TO ABOUT 80% BY WEIGHT SAID ABRASIVE PARTICLES, AND UP TO ABOUT 50% BY WEIGHT OF SAID FILLERS.
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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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |