US3237462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rock drilling rig
Assignee: Ingersoll Rand Co
•
Filing: 1964-05-15
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Granted: 1966-03-01
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Expires: 1984-05-15
Abstract
No abstract record available.
Inventors
- 👤 Worman Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:00
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/02; E21B7/025; E21B7/022; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19702; Y10T74/19721; Y10T74/20; Y10T74/20576; Y10T74/20636
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A ROCK DRILLING RIG COMPRISING: (A) AN ELONGATED BOOM; (B) A BOOM END PORTION ROTATABLY MOUNTED ON THE OUTER END OF SAID BOOM FOR ROTATION ABOUT THE AXIS OF SAID BOOM AND ADAPTED TO SUPPORT ROCK DRILLING EQUIPMENT; (C) AN ELONGATED POWER-TURNING MEMBER SLIDABLY MOUNTED WITHIN SAID BOOM AND CARRYING ON ITS SURFACE A GROUP OF HELICALLY EXTENDING SPLINES; (D) AN ANNULAR NUT FIXED TO SAID BOOM END PORTION AND HAVING HELICAL GROOVES SLIDABLY ENGAGING SAID HELICALLY EXTENDING SPLINES WHEREBY SAID NUT AND BOOM END PORTION IS CAUSED TO ROTATE ABOUT SAID BOOM IN RESPONSE TO THE AXIAL SLIDING OF SAID POWER-TURNING MEMBER IN SAID NUT; (E) MEANS NON-ROTATABLY CONNECTING SAID POWER-TURNING MEMBER TO SAID BOOM FOR PREVENTING IT FROM ROTATING RELATIVE TO THE BOOM DURING ITS SLIDING MOVEMENT;
Claim 2
Dependent Claim
129 words
A ROCK DRILLING RIG COMPRISING: (A) AN ELONGATED BOOM; (B) A BOOM END PORTION ROTATABLY MOUNTED ON THE OUTER END OF SAID BOOM FOR ROTATION ABOUT THE AXIS OF SAID BOOM AND ADAPTED TO SUPPORT ROCK DRILLING EQUIPMENT; (C) AN ELONGATED POWER-TURNING MEMBER SLIDABLY MOUNTED WITHIN SAID BOOM AND CARRYING ON ITS SURFACE A GROUP OF HELICALLY EXTENDING SPLINES; (D) AN ANNULAR NUT FIXED TO SAID BOOM END PORTION AND HAVING HELICAL GROOVES SLIDABLY ENGAGING SAID HELICALLY EXTENDING SPLINES WHEREBY SAID NUT AND BOOM END PORTION IS CAUSED TO ROTATE ABOUT SAID BOOM IN RESPONSE TO THE AXIAL SLIDING OF SAID POWER-TURNING MEMBER IN SAID NUT; (E) MEANS NON-ROTATABLY CONNECTING SAID POWER-TURNING MEMBER TO SAID BOOM FOR PREVENTING IT FROM ROTATING RELATIVE TO THE BOOM DURING ITS SLIDING MOVEMENT;
References Cited (Backward Citations)
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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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |