US3136394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable oil well drilling apparatus
Assignee: Lee C Moore Corp
•
Filing: 1960-12-09
•
Granted: 1964-06-09
•
Expires: 1980-12-09
Abstract
No abstract record available.
Inventors
- 👤 Homer J Woolslayer
- 👤 Jenkins Cecil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:06
CPC Classifications
E; E21; E21B; E21B15/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
PORTABLE OIL WELL DRILLING APPARATUS COMPRISING A SEMI-TRAILER FRAME HAVING WHEELS AT ITS REAR END AND A KING PIN AT ITS FRONT END, A DOLLY SUPPORTING THE FRONT END OF THE FRAME AND PROVIDED WITH MEANS DETACHABLY RECEIVING SAID PIN, MEANS FOR DETACHABLY CONNECTING THE FRONT END OF THE DOLLY TO THE FIFTH WHEEL OF A TRACTOR FOR PULLING THE DOLLY AND TRAILER, A MAST SUPPORT MOUNTED ON THE REAR END OF SAID FRAME, A RECLINING MAST EXTENDING LENGTHWISE OF THE TRAILER AND PROJECTING FROM ITS FRONT END, MEANS DETACHABLY HINGING THE REAR END OF THE MAST TO SAID SUPPORT, THE TRAILER FRAME HAVING A DRAWWORKS-RECEIVING AREA IN FRONT OF SAID SUPPORT, A CENTRAL SUPPORT MOUNTED ON SAID FRAME IN FRONT OF SAID AREA TO SUPPORT THE RECLINING MAST, A FRONT SUPPORT IN FRONT OF THE TRAILER FRAME FOR DETACHABLY CONNECTING THE RECLINING MAST WITH SAID FIFTH WHEEL WHEN IT IS DESIRED TO PULL THE DOLLY AND MAST WITHOUT THE TRAILER, AND MEANS ON THE DOLLY FOR SUPPORTING THE MAST WHEN THE MAST IS DETACHED FROM SAID REAR MAST SUPPORT.
Claim 2
Dependent Claim
180 words
PORTABLE OIL WELL DRILLING APPARATUS COMPRISING A SEMI-TRAILER FRAME HAVING WHEELS AT ITS REAR END AND A KING PIN AT ITS FRONT END, A DOLLY SUPPORTING THE FRONT END OF THE FRAME AND PROVIDED WITH MEANS DETACHABLY RECEIVING SAID PIN, MEANS FOR DETACHABLY CONNECTING THE FRONT END OF THE DOLLY TO THE FIFTH WHEEL OF A TRACTOR FOR PULLING THE DOLLY AND TRAILER, A MAST SUPPORT MOUNTED ON THE REAR END OF SAID FRAME, A RECLINING MAST EXTENDING LENGTHWISE OF THE TRAILER AND PROJECTING FROM ITS FRONT END, MEANS DETACHABLY HINGING THE REAR END OF THE MAST TO SAID SUPPORT, THE TRAILER FRAME HAVING A DRAWWORKS-RECEIVING AREA IN FRONT OF SAID SUPPORT, A CENTRAL SUPPORT MOUNTED ON SAID FRAME IN FRONT OF SAID AREA TO SUPPORT THE RECLINING MAST, A FRONT SUPPORT IN FRONT OF THE TRAILER FRAME FOR DETACHABLY CONNECTING THE RECLINING MAST WITH SAID FIFTH WHEEL WHEN IT IS DESIRED TO PULL THE DOLLY AND MAST WITHOUT THE TRAILER, AND MEANS ON THE DOLLY FOR SUPPORTING THE MAST WHEN THE MAST IS DETACHED FROM SAID REAR MAST SUPPORT.
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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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |