US3075592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling device
Assignee: Jersey Production Research Co
•
Filing: 1960-05-31
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Granted: 1963-01-29
•
Expires: 1980-05-31
Abstract
No abstract record available.
Inventors
- 👤 Charles R Overly
- 👤 George E Cannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:58
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/02; E21B10/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A DRILL BIT WHICH COMPRISES A HOLLOW BODY MEMBER PROVIDED WITH A PLURALITY OF SEPARATE, CIRCUMFERENTIAL PERIPHERALLY SPACED-APART CUTTING MEANS INWARDLY CARRIED ON A FREE END AND ADAPTED TO BE CONNECTED TO A HOLLOW DRILL STRING ON ITS OTHER END, SAID CUTTING MEANS BEING ARRANGED IN TRACKING RELATIONSHIP, COAXIAL DRILLING MEANS FIXEDLY ATTACHED WITHIN SAID HOLLOW BODY MEMBER AND SPACED ABOVE SAID CUTTING MEANS, MEANS FORMED IN SAID HOLLOW BODY MEMBER ADAPTED TO DELIVER DRILLING FLUID SEPARATELY TO SAID CUTTING MEANS AND SAID DRILLING MEANS, SAID HOLLOW BODY MEMBER FORMING A SHROUD ENCLOSING SAID DRILLING MEANS AND HAVING A WINDOW IN ITS WALL ADJACENT SAID DRILLING MEANS FOR DISCHARGE OF CUTTINGS FROM SAID DRILLING MEANS TO THE OUTSIDE OF SAID SHROUD.
Claim 2
Dependent Claim
121 words
A DRILL BIT WHICH COMPRISES A HOLLOW BODY MEMBER PROVIDED WITH A PLURALITY OF SEPARATE, CIRCUMFERENTIAL PERIPHERALLY SPACED-APART CUTTING MEANS INWARDLY CARRIED ON A FREE END AND ADAPTED TO BE CONNECTED TO A HOLLOW DRILL STRING ON ITS OTHER END, SAID CUTTING MEANS BEING ARRANGED IN TRACKING RELATIONSHIP, COAXIAL DRILLING MEANS FIXEDLY ATTACHED WITHIN SAID HOLLOW BODY MEMBER AND SPACED ABOVE SAID CUTTING MEANS, MEANS FORMED IN SAID HOLLOW BODY MEMBER ADAPTED TO DELIVER DRILLING FLUID SEPARATELY TO SAID CUTTING MEANS AND SAID DRILLING MEANS, SAID HOLLOW BODY MEMBER FORMING A SHROUD ENCLOSING SAID DRILLING MEANS AND HAVING A WINDOW IN ITS WALL ADJACENT SAID DRILLING MEANS FOR DISCHARGE OF CUTTINGS FROM SAID DRILLING MEANS TO THE OUTSIDE OF SAID SHROUD.
References Cited (Backward Citations)
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Cited
US1805899A
Cited
US2320136A
Cited
US2708103A
Cited
US2901223A
Cited
US2927777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |