US3115200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill bit nozzle assembly
Assignee: Reed Roller Bit Co
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Filing: 1957-08-28
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Granted: 1963-12-24
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Expires: 1977-08-28
Abstract
No abstract record available.
Inventors
- 👤 Clayton C Mandrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:35
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/60; E21B10/61; E21B10/08; E21B10/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A DRILL BIT HAVING A SLUSH PASSAGEWAY, SAID PASSAGEWAY BEING SUBSTANTIALLY UNIFORMLY CYLINDRICAL AND HAVING IN ITS WALL BETWEEN ITS ENDS A NARROW ANNULAR GROOVE, A NOZZLE FITTING AND MOVABLE IN SAID PASSAGEWAY AND HAVING A NARROW ANNULAR GROOVE BETWEEN ITS ENDS, AND A SPLIT RING RADIALLY SLIDABLE IN SAID PASSAGEWAY AND NOZZLE GROOVES TO HOLD SAID NOZZLE IN A PREDETERMINED AXIAL POSITION WITHIN SAID PASSAGEWAY, A PORTION OF THE SAID PASSAGEWAY WALL BEING CONTOURED TO PROVIDE ACCESS TO THE ENDS OF THE SAID SPLIT RING, AXIALLY OF SAID PASSAGEWAY.
Claim 2
Dependent Claim
90 words
A DRILL BIT HAVING A SLUSH PASSAGEWAY, SAID PASSAGEWAY BEING SUBSTANTIALLY UNIFORMLY CYLINDRICAL AND HAVING IN ITS WALL BETWEEN ITS ENDS A NARROW ANNULAR GROOVE, A NOZZLE FITTING AND MOVABLE IN SAID PASSAGEWAY AND HAVING A NARROW ANNULAR GROOVE BETWEEN ITS ENDS, AND A SPLIT RING RADIALLY SLIDABLE IN SAID PASSAGEWAY AND NOZZLE GROOVES TO HOLD SAID NOZZLE IN A PREDETERMINED AXIAL POSITION WITHIN SAID PASSAGEWAY, A PORTION OF THE SAID PASSAGEWAY WALL BEING CONTOURED TO PROVIDE ACCESS TO THE ENDS OF THE SAID SPLIT RING, AXIALLY OF SAID PASSAGEWAY.
References Cited (Backward Citations)
US472342A
Cited
US1995389A
Cited
GB570671A
Cited
US2440452A
Cited
US2595787A
Cited
US2760258A
Cited
US2885355A
Cited
FR1111902A
Cited
US2855182A
Cited
GB763676A
Cited
US2805089A
Cited
US2885186A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |