US3139510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of rebuilding tool joints
Assignee: PRICE MARION TOOL JOINT REBUILDERS Inc
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Filing: 1961-04-14
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Granted: 1964-06-30
•
Expires: 1981-04-14
Abstract
No abstract record available.
Inventors
- 👤 Price E Marion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:30
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A METHOD OF REBUILDING A WORN TOOL JOINT DRILL PIPE, COMPRISING THE STEPS OF: APPLYING A COATING OF PREDETERMINED THICKNESS AND ELEVATED TEMPERATURE TO THE OUTSIDE SURFACE OF A DRILL PIPE SECTION PROCEEDING SIMULTANEOUSLY FROM OPPOSITE ENDS THEREOF TENDING TO PRODUCE A VARYING TEMPERATURE GRADIENT ALONG SAID PIPE; AND CIRCULATING COOLANT THROUGH THE DRILL PIPE DURING THE SURFACE COATING
Claim 2
Independent Claim
59 words
A METHOD OF REBUILDING A WORN TOOL JOINT DRILL PIPE, COMPRISING THE STEPS OF: APPLYING A COATING OF PREDETERMINED THICKNESS AND ELEVATED TEMPERATURE TO THE OUTSIDE SURFACE OF A DRILL PIPE SECTION PROCEEDING SIMULTANEOUSLY FROM OPPOSITE ENDS THEREOF TENDING TO PRODUCE A VARYING TEMPERATURE GRADIENT ALONG SAID PIPE; AND CIRCULATING COOLANT THROUGH THE DRILL PIPE DURING THE SURFACE COATING
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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) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |