US3155180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill bit with fluid passages
Assignee: Canadian Ingersoll Rand Co Ltd
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Filing: 1962-04-27
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Granted: 1964-11-03
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Expires: 1982-04-27
Abstract
No abstract record available.
Inventors
- 👤 George A Macsween
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:58
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/36; E21B10/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
337 words
IN A ROTATABLE AND RECIPROCABLE DRILL BIT (10) FOR DRILLING A SIDE WALL (35) OF A HOLE (36) CONTAINING MUCK (38), SAID DRILL BIT (10) HAVING A BODY PROVIDED WITH A PERIPHERY AND A CUTTER GROOVE (14) IN SAID PERIPHERY, A CUTTER (16) DISPOSED IN SAID CUTTER GROOVE, SAID CUTTER (16) HAVING A BACK AND A CUTTER PERIPHERY (32) AND PROVIDED WITH CUTTING FACES (20A,20B) AND A CUTTING EDGE (22), SAID CUTTING EDGE HAVING AN EXPOSED PERIPHERAL CORNER(28), THE IMPROVEMENT COMPRISING: (A) SAID BODY (12) BEING PROVIDED WITH A SUBSTANTIALLY CENTRAL CLEANSING FLUID PASSAGE (24) EXTENDING THROUGH SAID BODY (12) TO A POINT BEHIND SAID CUTTING EDGE (22) FOR DIRECTING HIGH PRESSURE CLEANSING FLUID AGAINST THE BACK OF SAID CUTTER (16) AND ACROSS SAID CUTTING EDGE (22) AND SAID CUTTING FACES (20A, 20B), (B) SAID BODY BEING PROVIDED WITH REARWARDLY EXTENDING LOW PRESSURE MUCK GROOVES (18) ON OPPOSITE SIDES OF SAID BODY BEING PROVIDED WITH REARWARDLY SAID MUCK GROOVES DEFINING ON SAID PERIPHERY A CUTTER LAND, (C) SAID LAND (12) BEING PROVIDED WITH A FLUID CLEANSING PASSAGE (30) COMMUNICATING WITH SAID INTERNAL CLEANSING FLUID PASSAGE (24) AND EXTENDING THROUGH SAID BODY (12) TO SAID CUTTER LAND TO A POINT ADJACENT SAID CUTTER PERIPHERY (32) AND FOR DIRECTING HIGH PRESSURE CLEANSING FLUID AGAINST SAID PERIPHERY CORNER (28) AND ACROSS SAID CUTTING EDGE (22) AND SAID CUTTING FACES (20A, 20B) FROM SAID CUTTER PERIPHERY (32) (D) THE FLOW OF HIGH PRESSURE CLEANSING FLUID FROM SAID FLUID CLEANSING PASSAGE (30) IMPACTING AGAINST THE FLOW OF HIGH PRESSURE CLEANSING FLUID FROM SAID IN TERNAL CLEANSING FLUID PASSAGE (24) TO CREATE A VORTEX OF HIGH PRESSURE CLEANSING FLUID WHICH SCOURS SAID CUTTING EDGE (22) AND SAID CUTTING FACES (20A,20B) TO REMOVE SAID MUCK (38) THEREFROM AND TO FLOW SAID MUCK (38) REARWARDLY INTO SAID LOW PRESSURE MUCK GROOVES (18), (E) AND SAID BODY (12) BEING PROVIDED WITH A PERIPHERAL FLOW GROOVE (40) FOR CONDUCTING SAID FLOW OF HIGH PRESSURE CLEANSING FLUID FROM SAID FLUID CLEANSING PASSAGE (30) TO SAID PERIPHERY CORNER 28.
Claim 2
Dependent Claim
337 words
IN A ROTATABLE AND RECIPROCABLE DRILL BIT (10) FOR DRILLING A SIDE WALL (35) OF A HOLE (36) CONTAINING MUCK (38), SAID DRILL BIT (10) HAVING A BODY PROVIDED WITH A PERIPHERY AND A CUTTER GROOVE (14) IN SAID PERIPHERY, A CUTTER (16) DISPOSED IN SAID CUTTER GROOVE, SAID CUTTER (16) HAVING A BACK AND A CUTTER PERIPHERY (32) AND PROVIDED WITH CUTTING FACES (20A,20B) AND A CUTTING EDGE (22), SAID CUTTING EDGE HAVING AN EXPOSED PERIPHERAL CORNER(28), THE IMPROVEMENT COMPRISING: (A) SAID BODY (12) BEING PROVIDED WITH A SUBSTANTIALLY CENTRAL CLEANSING FLUID PASSAGE (24) EXTENDING THROUGH SAID BODY (12) TO A POINT BEHIND SAID CUTTING EDGE (22) FOR DIRECTING HIGH PRESSURE CLEANSING FLUID AGAINST THE BACK OF SAID CUTTER (16) AND ACROSS SAID CUTTING EDGE (22) AND SAID CUTTING FACES (20A, 20B), (B) SAID BODY BEING PROVIDED WITH REARWARDLY EXTENDING LOW PRESSURE MUCK GROOVES (18) ON OPPOSITE SIDES OF SAID BODY BEING PROVIDED WITH REARWARDLY SAID MUCK GROOVES DEFINING ON SAID PERIPHERY A CUTTER LAND, (C) SAID LAND (12) BEING PROVIDED WITH A FLUID CLEANSING PASSAGE (30) COMMUNICATING WITH SAID INTERNAL CLEANSING FLUID PASSAGE (24) AND EXTENDING THROUGH SAID BODY (12) TO SAID CUTTER LAND TO A POINT ADJACENT SAID CUTTER PERIPHERY (32) AND FOR DIRECTING HIGH PRESSURE CLEANSING FLUID AGAINST SAID PERIPHERY CORNER (28) AND ACROSS SAID CUTTING EDGE (22) AND SAID CUTTING FACES (20A, 20B) FROM SAID CUTTER PERIPHERY (32) (D) THE FLOW OF HIGH PRESSURE CLEANSING FLUID FROM SAID FLUID CLEANSING PASSAGE (30) IMPACTING AGAINST THE FLOW OF HIGH PRESSURE CLEANSING FLUID FROM SAID IN TERNAL CLEANSING FLUID PASSAGE (24) TO CREATE A VORTEX OF HIGH PRESSURE CLEANSING FLUID WHICH SCOURS SAID CUTTING EDGE (22) AND SAID CUTTING FACES (20A,20B) TO REMOVE SAID MUCK (38) THEREFROM AND TO FLOW SAID MUCK (38) REARWARDLY INTO SAID LOW PRESSURE MUCK GROOVES (18), (E) AND SAID BODY (12) BEING PROVIDED WITH A PERIPHERAL FLOW GROOVE (40) FOR CONDUCTING SAID FLOW OF HIGH PRESSURE CLEANSING FLUID FROM SAID FLUID CLEANSING PASSAGE (30) TO SAID PERIPHERY CORNER 28.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |