US3095053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill bit
Assignee: Jersey Production Research Co
•
Filing: 1960-02-01
•
Granted: 1963-06-25
•
Expires: 1980-02-01
Abstract
No abstract record available.
Inventors
- 👤 Pistole Harry
- 👤 Jr Harold H Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:35
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/42; E21B10/46; E21B10/54; E21B10/60; E21B10/602
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A DRILL BIT ADAPTED TO BE CONNECTED TO A HOLLOW DRILL STRING COMPRISING A BODY MEMBER HAVING A PLURALITY OF INNER AND OUTER BLADES ARRANGED CONCENTRICALLY THEREON TO PROVIDE AT LEAST ONE GROOVE BETWEEN THE INNER AND OUTER CONCENTRIC BLADES, THE INNER BLADES HAVING A LENGTH NO GREATER THAN THE LENGTH OF THE OUTER BLADES, SAID BODY MEMBER BEING FORMED TO PROVIDE A PASSAGEWAY ADAPTED TO COMMUNICATE WITH SAID HOLLOW DRILL STRING, SAID PASSAGEWAY HAVING AT LEAST ONE PORT ARRANGED TO DISCHARGED DRILLING FLUID IN SAID GROOVE, AND AT LEAST ONE BREAKER MEANS ON SAID BODY MEMBER ARRANGED IN SAID GROOVE, SAID BREAKER MEANS AND DISCHARGE OF DRILLING FLUID THROUGH SAID PORT FRACTURING FORMATION MATERIAL IN SAID GROOVE.
Claim 2
Dependent Claim
118 words
A DRILL BIT ADAPTED TO BE CONNECTED TO A HOLLOW DRILL STRING COMPRISING A BODY MEMBER HAVING A PLURALITY OF INNER AND OUTER BLADES ARRANGED CONCENTRICALLY THEREON TO PROVIDE AT LEAST ONE GROOVE BETWEEN THE INNER AND OUTER CONCENTRIC BLADES, THE INNER BLADES HAVING A LENGTH NO GREATER THAN THE LENGTH OF THE OUTER BLADES, SAID BODY MEMBER BEING FORMED TO PROVIDE A PASSAGEWAY ADAPTED TO COMMUNICATE WITH SAID HOLLOW DRILL STRING, SAID PASSAGEWAY HAVING AT LEAST ONE PORT ARRANGED TO DISCHARGED DRILLING FLUID IN SAID GROOVE, AND AT LEAST ONE BREAKER MEANS ON SAID BODY MEMBER ARRANGED IN SAID GROOVE, SAID BREAKER MEANS AND DISCHARGE OF DRILLING FLUID THROUGH SAID PORT FRACTURING FORMATION MATERIAL IN SAID GROOVE.
References Cited (Backward Citations)
US613340A
Cited
GB190126A
Cited
US1809351A
Cited
US1913550A
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US2022734A
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US2290595A
Cited
US2749104A
Cited
US2855994A
Cited
US2830795A
Cited
US2901222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |