US3086410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trepanning tool
Assignee: Individual
•
Filing: 1961-01-23
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Granted: 1963-04-23
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Expires: 1981-01-23
Abstract
No abstract record available.
Inventors
- 👤 Zimmermann Lukas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:12
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/04; B23B2220/00; B23B2220/12; B23B2220/126; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/496; Y10T408/00; Y10T408/89; Y10T408/895; Y10T408/8957; Y10T408/905; Y10T408/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A CUTTING TOOL FOR PERFORMING TREPANNING OPERATIONS HAVING A CUTTING HEAD BIFURCATED ON ITS LONGITUDINAL AXIS PROVIDING A PAIR OF CUTTING ELEMENTS SPACED 180 DEGREES APART, SAID CUTTING ELEMENTS BEING FORMED ON COMBINED SPIRAL-HELICAL CURVES EACH HAVING A CUTTING TOOTH WITH THE FACE THEREOF DISPOSED IN THE DIRECTION OF CUTTING ROTATION OF SAID CUTTING TOOL, ONE CUTTING ELEMENT BEING FORMED TO CUT THE OUTER PORTION OF THE TREPANNING CUT SPIRALING INWARDLY THEREFROM, THE OTHER CUTTING ELEMENT BEING FORMED TO CUT THE INNER PORTION OF THE TREPANNING CUT SPIRALING OUTWARDLY THEREFROM, AND THE AXIAL ENDS OF SAID CUTTING ELEMENTS BEING FORMED TO CUT THE BOTTOM OF THE SAID TREPANNING CUT.
Claim 2
Dependent Claim
109 words
A CUTTING TOOL FOR PERFORMING TREPANNING OPERATIONS HAVING A CUTTING HEAD BIFURCATED ON ITS LONGITUDINAL AXIS PROVIDING A PAIR OF CUTTING ELEMENTS SPACED 180 DEGREES APART, SAID CUTTING ELEMENTS BEING FORMED ON COMBINED SPIRAL-HELICAL CURVES EACH HAVING A CUTTING TOOTH WITH THE FACE THEREOF DISPOSED IN THE DIRECTION OF CUTTING ROTATION OF SAID CUTTING TOOL, ONE CUTTING ELEMENT BEING FORMED TO CUT THE OUTER PORTION OF THE TREPANNING CUT SPIRALING INWARDLY THEREFROM, THE OTHER CUTTING ELEMENT BEING FORMED TO CUT THE INNER PORTION OF THE TREPANNING CUT SPIRALING OUTWARDLY THEREFROM, AND THE AXIAL ENDS OF SAID CUTTING ELEMENTS BEING FORMED TO CUT THE BOTTOM OF THE SAID TREPANNING CUT.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |