US3196960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure expansible drill bits
Assignee: Individual
•
Filing: 1963-03-19
•
Granted: 1965-07-27
•
Expires: 1983-03-19
Abstract
No abstract record available.
Inventors
- 👤 Archer W Kammerer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:26
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/26; E21B10/32; E21B10/322
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
IN A ROTARY DRILL BIT TO BE LOWERED IN A WELL BORE ON A ROTARY DRILL STRING: A BODY HAVING A SLOT; CUTTER MEANS IN SAID SLOT CARRIED BY SAID BODY FOR EXPANSION FROM A RETRACTED POSITION LATERALLY OUTWARDLY OF SAID BODY; MEANS FOR EXPANDING SAID CUTTER MEANS LATERALLY OUTWARDLY OF SAID BODY, INCLUDING A TUBULAR MEMBER MOVABLE RELATIVELY LONGITUDINALLY IN SAID BODY; SAID TUBULAR MEMBER HAVING A FLUID PASSAGE ADAPTED TO RECEIVE FLUID FROM THE DRILL STRING AND ALSO HAVING FIRST PASSAGE MEANS AND SECOND PASSAGE MEANS COMMUNICATING WITH SAID PASSAGE AND THROUGH WHICH FLUID IS ADAPTED TO DISCHARGE FROM THE TUBULAR MEMBER; MEANS ON SAID BODY CLOSING SAID SECOND PASSAGE MEANS WHEN SAID TUBULARE MEMBER OCCUPIES ONE POSITION IN SAID BODY WITH SAID CUTTER MEANS RETRACTED AND WITH SAID FIRST PASSAGE MEANS OPEN, RELATIVE LONGITUDINAL MOVEMENT OF SAID TUBULAR MEMBER IN SAID BODY FROM SAID ONE POSITION UPON EXPANSION OF SAID CUTTER MEANS SHIFTING SAID SECOND PASSAGE MEANS TO OPEN
Claim 2
Dependent Claim
162 words
IN A ROTARY DRILL BIT TO BE LOWERED IN A WELL BORE ON A ROTARY DRILL STRING: A BODY HAVING A SLOT; CUTTER MEANS IN SAID SLOT CARRIED BY SAID BODY FOR EXPANSION FROM A RETRACTED POSITION LATERALLY OUTWARDLY OF SAID BODY; MEANS FOR EXPANDING SAID CUTTER MEANS LATERALLY OUTWARDLY OF SAID BODY, INCLUDING A TUBULAR MEMBER MOVABLE RELATIVELY LONGITUDINALLY IN SAID BODY; SAID TUBULAR MEMBER HAVING A FLUID PASSAGE ADAPTED TO RECEIVE FLUID FROM THE DRILL STRING AND ALSO HAVING FIRST PASSAGE MEANS AND SECOND PASSAGE MEANS COMMUNICATING WITH SAID PASSAGE AND THROUGH WHICH FLUID IS ADAPTED TO DISCHARGE FROM THE TUBULAR MEMBER; MEANS ON SAID BODY CLOSING SAID SECOND PASSAGE MEANS WHEN SAID TUBULARE MEMBER OCCUPIES ONE POSITION IN SAID BODY WITH SAID CUTTER MEANS RETRACTED AND WITH SAID FIRST PASSAGE MEANS OPEN, RELATIVE LONGITUDINAL MOVEMENT OF SAID TUBULAR MEMBER IN SAID BODY FROM SAID ONE POSITION UPON EXPANSION OF SAID CUTTER MEANS SHIFTING SAID SECOND PASSAGE MEANS TO OPEN
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |