Patent US3368263A successfully refreshed from Google Patents.
US3368263A
Expired / Lapsed
US
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Method of making gears and the like
Assignee: Dexco Corp
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Filing: 1965-12-30
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Granted: 1968-02-13
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Expires: 1985-12-30
Abstract
No abstract record available.
Inventors
- 👤 Jr William H Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:20
CPC Classifications
B; B23; B23F; B23F21/00; B23F21/03; B23F21/035; B23F19/00; B23F19/05; B23F19/052; B23F21/02; B23F21/026; B23F5/00; B23F5/02; B23F5/04; B24; B24D; B24D18/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49462; Y10T29/49467; Y10T29/49469; Y10T29/49995; Y10T29/49996
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
THE METHOD OF MAKING ARTICLES SUCH AS GEARS AND SPLINES HAVING PERIPHERIAL TEETH OR GROOVING WHICH COMPRISES, ROUGH FORMING SAID ARTICLE FROM UNHARDENED METAL, THEN SUBJECTING SAID ARTICLE IN ROUGH-FORMED CONDITION TO HEAT TREATMENT TO HARDEN THE SAME, PROVIDING A WORM FORMED OF METAL AND HAVING A HELICAL THREAD COATED WITH MYRIAD GRITS OF TUNGSTEN CARBIDE, AFTER SAID ARTICLE HAS BEEN SO HARDENED, PRESSING SAID COATED WORM THREAD INTO DENTAL ENGAGEMENT WITH SAID ARTICLE AND ROTATING SAID WORM, REGULATING THE PRESSURE OF SAID WORM THREAD AGAINST SAID ARTICLE AND THE SPEED OF ROTATION OF SAID WORM SO THAT SAID WORM THREAD REMOVES METAL FROM SAID ARTICLE, AND THEREBY BOTH FINISH FORMING SAID ARTICLE AND REMOVING DISTORTIONS THEREFROM INCIDENTAL TO SAID HEAT TREATMENT.
Claim 2
Independent Claim
122 words
THE METHOD OF MAKING ARTICLES SUCH AS GEARS AND SPLINES HAVING PERIPHERIAL TEETH OR GROOVING WHICH COMPRISES, ROUGH FORMING SAID ARTICLE FROM UNHARDENED METAL, THEN SUBJECTING SAID ARTICLE IN ROUGH-FORMED CONDITION TO HEAT TREATMENT TO HARDEN THE SAME, PROVIDING A WORM FORMED OF METAL AND HAVING A HELICAL THREAD COATED WITH MYRIAD GRITS OF TUNGSTEN CARBIDE, AFTER SAID ARTICLE HAS BEEN SO HARDENED, PRESSING SAID COATED WORM THREAD INTO DENTAL ENGAGEMENT WITH SAID ARTICLE AND ROTATING SAID WORM, REGULATING THE PRESSURE OF SAID WORM THREAD AGAINST SAID ARTICLE AND THE SPEED OF ROTATION OF SAID WORM SO THAT SAID WORM THREAD REMOVES METAL FROM SAID ARTICLE, AND THEREBY BOTH FINISH FORMING SAID ARTICLE AND REMOVING DISTORTIONS THEREFROM INCIDENTAL TO SAID HEAT TREATMENT.
References Cited (Backward Citations)
US1305050A
Cited
US1329805A
Cited
US1412185A
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US1415261A
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US1847848A
Cited
US2077100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |