US3701607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deep hole drilling tool
Assignee: Individual
•
Filing: 1970-10-23
•
Granted: 1972-10-31
•
Expires: 1990-10-23
Abstract
Abstract A DEEP HOLE DRILLING TOOL WHICH INCLUDES A CUTTING TIP BRAZED TO AN ELONGATED SHANK, A SECOND SHANK INTEGRALLY FORMED UPON THE FIRST AND HAVING A GREATER DIAMETER THEREOVER, AND A THIRD SHANK INTEGRALLY FORMED UPON THE SECOND SHANK AND HAVING A GREATER DIAMETER THEREFROM. A PAIR OF O-RINGS ARE SPACEDLY MOUNTED IN THEIR RESPECTIVELY ANNULAR GROOVES ABOUT THE PERIPHERY OF THE THIRD SHANK WHEREBY UPON INSERTED OF THE THIRD SHANK IN A SPINDLE MOUNTED IN A STOCK OF A TOOLING MACHINE, SEEPAGE OF COOLANT AND LUBRICATING OIL ABOUT THE TOOL''S SHANK IS PREVENTED AND ALL SUCH OILS FLOW WITHIN THE TUBE''S BORE TO THE CUTTING TIP ITSELF.
Inventors
- 👤 Robert C Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:46
CPC Classifications
B; B23; B23B; B23B41/00; B23B41/02; Y; Y10; Y10T; Y10T408/00; Y10T408/44; Y10T408/45; Y10T408/455
Claims Analysis
Total Claims: 0
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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) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |