US3244035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trepanning drill tool
Assignee: Ex-Cell-O Corp
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Filing: 1965-09-21
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Granted: 1966-04-05
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Expires: 1985-09-21
Abstract
No abstract record available.
Inventors
- 👤 Raymond K Jehle
- 👤 Wilinski Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:28
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/04; B23B51/0461; B23B51/0006; B23B51/0007; B23B2240/00; B23B2240/08; B23B2251/00; B23B2251/48; B23B2251/50; B23B2251/56; Y; Y10; Y10T; Y10T408/00; Y10T408/44; Y10T408/89; Y10T408/895
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A TREPANNING DRILL TOOL FOR DRILLING AN ANNULAR HOLE HAVING AN INNER DIAMETER AND AN OUTER DIAMETER, A DRILL BODY HAVING A GENERALLY CYLINDRICAL OUTER SURFACE OF LESSER DIAMETER THAN SAID OUTER DIAMETER AND A CENTRAL BORE OF GREATER DIAMETER THAN SAID INNER DIAMETER, THE CUTTING END OF SAID DRILL BODY HAVING A FIRST CUTTING EDGE HAVING AN INNER CUTTING ZONE EXTENDING OUTWARDLY FROM SAID INNER DIAMETER TO A FIRST INTERMEDIATE POINT BETWEEN SAID FIRST AND INNER DIAMETERS AND A RELIEVE ZONE EXTENDING OUTWARDLY FROM SAID FIRST INTERMEDIATED POINT, A SECOND CUTTING EDGE DIAMETRICALLY OPPOSED TO SAID FIRST CUTTING EDGE AND HAVING AN OUTER CUTTING ZONE EXTENDING INWARDLY FROM SAID OUTER DIAMETER AND TO A SECOND IN-
Claim 2
Dependent Claim
118 words
IN A TREPANNING DRILL TOOL FOR DRILLING AN ANNULAR HOLE HAVING AN INNER DIAMETER AND AN OUTER DIAMETER, A DRILL BODY HAVING A GENERALLY CYLINDRICAL OUTER SURFACE OF LESSER DIAMETER THAN SAID OUTER DIAMETER AND A CENTRAL BORE OF GREATER DIAMETER THAN SAID INNER DIAMETER, THE CUTTING END OF SAID DRILL BODY HAVING A FIRST CUTTING EDGE HAVING AN INNER CUTTING ZONE EXTENDING OUTWARDLY FROM SAID INNER DIAMETER TO A FIRST INTERMEDIATE POINT BETWEEN SAID FIRST AND INNER DIAMETERS AND A RELIEVE ZONE EXTENDING OUTWARDLY FROM SAID FIRST INTERMEDIATED POINT, A SECOND CUTTING EDGE DIAMETRICALLY OPPOSED TO SAID FIRST CUTTING EDGE AND HAVING AN OUTER CUTTING ZONE EXTENDING INWARDLY FROM SAID OUTER DIAMETER AND TO A SECOND IN-
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |