US3266582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling system
Assignee: Leyman Corp
•
Filing: 1962-08-24
•
Granted: 1966-08-16
•
Expires: 1982-08-24
Abstract
No abstract record available.
Inventors
- 👤 Homanick George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:10
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/20; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49815; Y10T29/49819; Y10T29/49821; Y10T29/49826; Y10T29/49895; Y10T29/49902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
IN A METHOD OF REMOVING A STAND OF PIPE FROM A DRILL STRING, THE STEPS OF GRASPING THE TOP END OF THE STAND, TRAPPING THE BOTTOM END OF THE STAND, BREAKING THE STAND OUT OF THE STRING, AND SIMULTANEOUSLY MOVING THE TOP END VERTICALLY DOWNWARDLY ALONG AND ADJACENT THE DRILL AXIS AND MOVING THE BOTTOM END AWAY FROM THE DRILL AXIS TO SWING THE STAND FROM COAXIAL ALIGNMENT ON THE DRILL AXIS TO HORIZONTAL.
Claim 2
Dependent Claim
65 words
IN A DRILLING SYSTEM, A DERRICK HAVING VERTICAL GUIDE MEANS THEREON, A TRAVELLING BLOCK, MEANS FOR MOVING SAID TRAVELLING BLOCK ALONG SAID VERTICAL GUIDE MEANS, SAID TRAVELLING BLOCK INCLUDING A BODY MEMBER, GUIDEWAY MEANS ON SAID BODY MEMBER, A DRILLHEAD MOUNTED FOR MOVEMENT ON SAID GUIDEWAY MEANS, MEANS SUPPORTING SAID DRILLHEAD FOR PIVOTAL MOVEMENT BETWEEN VERTICAL AND HORIZONTAL POSITIONS, AND MEANS FOR PIVOTING SAID DRILLHEAD.
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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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |