Patent US3225828A successfully refreshed from Google Patents.
US3225828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Downhole vertical slotting tool
Assignee: American Coldset Corp
•
Filing: 1963-06-05
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Granted: 1965-12-28
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Expires: 1983-06-05
Abstract
No abstract record available.
Inventors
- 👤 John D Wisenbaker
- 👤 Robert W Stuart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:30
CPC Classifications
E; E21; E21B; E21B29/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A DOWN-HOLE VERTICAL SLOTTING TOOL COMPRISING A HOUSING ADAPTED TO BE LOWERED INTO A WELL BOREHOLE ON A WIRE LINE, AND HAVING AN ELONGATED LONTIGUDINALLY EXTENDING OPENING IN THE WALL THEREOF, A MOTOR WITHIN SAID HOUSING, MEANS FOR SUPPLYING POWER TO SAID MOTOR, A CUTTER MOUNTED FOR MOVEMENT IN A VERTICAL PLANE AND MECHANICALLY COUPLED TO SAID MOTOR TO BE DRIVEN THEREBY, MEANS FOR MOVING SAID CUTTER LONGITUDINALLY OF SAID HOUSING, AND MEANS FOR MOVING SAID CUTTER TRANSVERSELY OF SAID HOUSING TO CAUSE IT TO PROJECT THROUGH SAID OPENING AND INTO CUTTING RELATION WITH THE SIDEWALL OF SAID BOREHOLE AT THE FIRST PORTION OF SUCH LONGITUDINAL MOVEMENT, THEN TO CAUSE IT TO MOVE LONGITUDINALLY OF SAID HOUSING WHILE PROJECTING THROUGH SAID OPENING AND CUTTING A VERTICAL SLOT IN SAID SIDEWALL, AND FINALLY TO CAUSE
Claim 2
Dependent Claim
134 words
A DOWN-HOLE VERTICAL SLOTTING TOOL COMPRISING A HOUSING ADAPTED TO BE LOWERED INTO A WELL BOREHOLE ON A WIRE LINE, AND HAVING AN ELONGATED LONTIGUDINALLY EXTENDING OPENING IN THE WALL THEREOF, A MOTOR WITHIN SAID HOUSING, MEANS FOR SUPPLYING POWER TO SAID MOTOR, A CUTTER MOUNTED FOR MOVEMENT IN A VERTICAL PLANE AND MECHANICALLY COUPLED TO SAID MOTOR TO BE DRIVEN THEREBY, MEANS FOR MOVING SAID CUTTER LONGITUDINALLY OF SAID HOUSING, AND MEANS FOR MOVING SAID CUTTER TRANSVERSELY OF SAID HOUSING TO CAUSE IT TO PROJECT THROUGH SAID OPENING AND INTO CUTTING RELATION WITH THE SIDEWALL OF SAID BOREHOLE AT THE FIRST PORTION OF SUCH LONGITUDINAL MOVEMENT, THEN TO CAUSE IT TO MOVE LONGITUDINALLY OF SAID HOUSING WHILE PROJECTING THROUGH SAID OPENING AND CUTTING A VERTICAL SLOT IN SAID SIDEWALL, AND FINALLY TO CAUSE
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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) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |