Patent FR908087A successfully refreshed from Google Patents.
Patent US3131778A successfully refreshed from Google Patents.
US3131778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling deflection apparatus
Assignee: Individual
•
Filing: 1961-12-11
•
Granted: 1964-05-05
•
Expires: 1981-12-11
Abstract
No abstract record available.
Inventors
- 👤 William C Emerson
- 👤 Smith Lester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:49
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/04; E21B7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
202 words
AN APPARATUS ADAPTED TO BE MOUNTED ON A DRILL PIPE FOR DRILLING A HOLE AT AN ANGLE OF DEFLECTION COMPRISING: (A) A TUBULAR HOUSING HAVING MEANS AT ITS UPPER END FOR CONNECTION TO A DRILL PIPE, (B) AN ANNULAR REAMER MOUNTED ON THE LOWER END OF SAID HOUSING FOR ROTATION THEREWITH, (C) A PILOT BIT BODY SLIDABLY MOUNTED IN SAID HOUSING, (D) A PILOT BIT CONNECTED AT THE LOWER END OF SAID BODY, (E) CONNECTOR MEANS BETWEEN SAID HOUSING AND SAID BODY FOR SLIDABLY CONNECTING SAID PILOT BIT BODY TO SAID HOUSING FOR PERMITTING TELESCOPING AND EXTENDING OF SAID PILOT BIT RELATIVE TO SAID REAMER, (F) SAID CONNECTOR MEANS INCLUDING MEANS FOR HOLDING SAID PILOT BIT BODY IN SAID HOUSING AND HOLDING SAID PILOT BIT BOTH IN TELESCOPED POSITION AND EXTENDED POSITION RELATIVE TO SAID REAMER SO THAT WHEN THE PILOT BIT IS EXTENDED IT DRILLS A PILOT HOLE AND WHEN THE PILOT BIT IS TELESCOPED THE PILOT HOLE IS ENLARGED BY THE REAMER, (G) AND MEANS CONNECTING SAID PILOT BIT TO SAID PILOT BIT BODY FOR POSITIONING SAID PILOT BIT AT AN ANGLE WITH RESPECT TO THE LONGITUDINAL AXIS OF SAID REAMER WHEN SAID PILOT BIT IS IN AN EXTENDED POSITION.
Claim 2
Independent Claim
202 words
AN APPARATUS ADAPTED TO BE MOUNTED ON A DRILL PIPE FOR DRILLING A HOLE AT AN ANGLE OF DEFLECTION COMPRISING: (A) A TUBULAR HOUSING HAVING MEANS AT ITS UPPER END FOR CONNECTION TO A DRILL PIPE, (B) AN ANNULAR REAMER MOUNTED ON THE LOWER END OF SAID HOUSING FOR ROTATION THEREWITH, (C) A PILOT BIT BODY SLIDABLY MOUNTED IN SAID HOUSING, (D) A PILOT BIT CONNECTED AT THE LOWER END OF SAID BODY, (E) CONNECTOR MEANS BETWEEN SAID HOUSING AND SAID BODY FOR SLIDABLY CONNECTING SAID PILOT BIT BODY TO SAID HOUSING FOR PERMITTING TELESCOPING AND EXTENDING OF SAID PILOT BIT RELATIVE TO SAID REAMER, (F) SAID CONNECTOR MEANS INCLUDING MEANS FOR HOLDING SAID PILOT BIT BODY IN SAID HOUSING AND HOLDING SAID PILOT BIT BOTH IN TELESCOPED POSITION AND EXTENDED POSITION RELATIVE TO SAID REAMER SO THAT WHEN THE PILOT BIT IS EXTENDED IT DRILLS A PILOT HOLE AND WHEN THE PILOT BIT IS TELESCOPED THE PILOT HOLE IS ENLARGED BY THE REAMER, (G) AND MEANS CONNECTING SAID PILOT BIT TO SAID PILOT BIT BODY FOR POSITIONING SAID PILOT BIT AT AN ANGLE WITH RESPECT TO THE LONGITUDINAL AXIS OF SAID REAMER WHEN SAID PILOT BIT IS IN AN EXTENDED POSITION.
References Cited (Backward Citations)
USRE20405E
Cited
US1636032A
Cited
US2142858A
Cited
US2100418A
Cited
US2197019A
Cited
US2241746A
Cited
US2301307A
Cited
US2994389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |