US3197262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe protector
Assignee: Individual
•
Filing: 1962-11-05
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Granted: 1965-07-27
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Expires: 1982-11-05
Abstract
No abstract record available.
Inventors
- 👤 Byrl R Fairchild
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:24
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/10; E21B17/1042; E21B17/105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A PIPE PROTECTOR FOR DRILL PIPE SECTIONS WHICH ARE ADAPTED TO BE CONNECTED TOGETHER BY TOOL JOINTS INCLUDING, (A) A TUBULAR MEMBER FOR POSITIONING ON THE DRILL PIPE SECTION, THE INNER DIAMETER OF SAID MEMBER BEING SLIGHTLY GREATER THAN THE OUTER DIAMETER OF THE DRILL PIPE SECTION AND SMALLER THAN THE OUTER DIAMETER OF THE TOOL JOINTS WHEN MOUNTED THEREON, (B) FLUID CONDUCTING PASSAGE MEANS FORMED ON THE EXTERIOR SURFACE OF SAID MEMBER AND FLUID CONDUCTING PASSAGE MEANS FORMED ON THE INTERIOR SURFACE OF SAID MEMBER FOR CONDUCTING FLUID LONGITUDINALLY OF SAID INTERIOR AND EXTERIOR SURFACE OF SAID MEMBER, (C) SAID TUBULAR MEMBER INCLUDING AN INNER BUSHING SPLIT INTO A PLURALITY OF LONGITUDINALLY EXTENDING SECTIONS. (D) AND OUTER SLEEVE EXTENDING COAXIALLY WITH SAID INNER BUSHING, AND (E) THREAD MEANS OF SAID SECTIONS FOR SECURING SAID INNER BUSHING IN SAID OUTER SLEEVE.
Claim 2
Dependent Claim
141 words
A PIPE PROTECTOR FOR DRILL PIPE SECTIONS WHICH ARE ADAPTED TO BE CONNECTED TOGETHER BY TOOL JOINTS INCLUDING, (A) A TUBULAR MEMBER FOR POSITIONING ON THE DRILL PIPE SECTION, THE INNER DIAMETER OF SAID MEMBER BEING SLIGHTLY GREATER THAN THE OUTER DIAMETER OF THE DRILL PIPE SECTION AND SMALLER THAN THE OUTER DIAMETER OF THE TOOL JOINTS WHEN MOUNTED THEREON, (B) FLUID CONDUCTING PASSAGE MEANS FORMED ON THE EXTERIOR SURFACE OF SAID MEMBER AND FLUID CONDUCTING PASSAGE MEANS FORMED ON THE INTERIOR SURFACE OF SAID MEMBER FOR CONDUCTING FLUID LONGITUDINALLY OF SAID INTERIOR AND EXTERIOR SURFACE OF SAID MEMBER, (C) SAID TUBULAR MEMBER INCLUDING AN INNER BUSHING SPLIT INTO A PLURALITY OF LONGITUDINALLY EXTENDING SECTIONS. (D) AND OUTER SLEEVE EXTENDING COAXIALLY WITH SAID INNER BUSHING, AND (E) THREAD MEANS OF SAID SECTIONS FOR SECURING SAID INNER BUSHING IN SAID OUTER SLEEVE.
References Cited (Backward Citations)
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 |