Patent US3340508A successfully refreshed from Google Patents.
US3237705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reamer for enlarging and straightening bore holes
Assignee: Individual
•
Filing: 1963-11-13
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Granted: 1966-03-01
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Expires: 1983-11-13
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward B Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:08
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/26; E21B10/46
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
99 words
A REAMER FOR INSERTION IN A STRING OF DRILL PIPE, SAID REAMER INCLUDING A GENERALLY CYLINDRICAL BODY HAVING CONNECTIONS AT THE ENDS THEREOF FOR CONNECTION INTO THE STRING OF DRILL PIPE, SAID BODY HAVING A LATERAL REAMING MEANS PROJECTING FROM ONLY ONE SIDE OF SAID BODY FOR CONTACT WITH THE WALL OF A BORE HOLE WHEN THE REAMER IS IN USE, SAID BODY HAVING A PASSAGEWAY CONNECTING WITH THE REAMING MEANS FOR DIVERTING A PORTION OF THE DRILLING FLUID FROM THE DRILL PIPE, AND A CHOKE IN SAID PASSAGEWAY FOR CONTROLLING FLOW OF DRILLING FLUID TO SAID REAMING MEANS.
References Cited (Backward Citations)
US1590422A
Cited
US2249732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |