Patent US3334849A successfully refreshed from Google Patents.
US3334849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill mounting
Assignee: Ingersoll Rand World Trade Ltd
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Filing: 1966-02-14
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Granted: 1967-08-08
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Expires: 1986-02-14
Abstract
No abstract record available.
Inventors
- 👤 Bronder Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:59
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/02; E21B7/027; E21B7/028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A FOLDABLE DRILLING RIG OR DRILLING MACHINE COMPRISING: FRAME; AT LEAST ONE DRILL BOOM ROTATABLY MOUNTED ON SAID FRAME AND ADAPTED TO CARRY DRILLING EQUIPMENT; A PAIR OF MUTUALLY HINGED LEGS LOCATED ON EACH SIDE OF SAID FRAME WITH AT LEAST ONE OF SAID LEGS BEING PIVOTED TO SAID FRAME; FLUID-OPERATED MEANS OPERATIVE TO MOVE SAID LEGS BETWEEN TWO POSITIONS INCLUDING A FOLDED TRANSPORTING POSITION WHEREIN SAID LEGS ARE FOLDED SUBSTANTIALLY PARALLEL BELOW SAID FRAME AND AN ERECTED DRILLING POSITION WHEREIN SAID LEGS EXTEND DOWNWARDLY TO ENGAGE THE GROUND AND SUPPORT SAID FRAME; SAID ONE LEG OF EACH PAIR OF LEGS INCLUDING AN UPPER ARM EXTENDING BEYOND ITS PIVOT TO SAID FRAME; AND SAID UPPER ARM BEING INTERCONNECTED TO SAID FRAME BY ONE OF SAID FLUID-OPERATED MEANS WHICH IS OPERATIVE TO SWING SAID ONE LEG ABOUT ITS PIVOT.
Claim 2
Dependent Claim
138 words
A FOLDABLE DRILLING RIG OR DRILLING MACHINE COMPRISING: FRAME; AT LEAST ONE DRILL BOOM ROTATABLY MOUNTED ON SAID FRAME AND ADAPTED TO CARRY DRILLING EQUIPMENT; A PAIR OF MUTUALLY HINGED LEGS LOCATED ON EACH SIDE OF SAID FRAME WITH AT LEAST ONE OF SAID LEGS BEING PIVOTED TO SAID FRAME; FLUID-OPERATED MEANS OPERATIVE TO MOVE SAID LEGS BETWEEN TWO POSITIONS INCLUDING A FOLDED TRANSPORTING POSITION WHEREIN SAID LEGS ARE FOLDED SUBSTANTIALLY PARALLEL BELOW SAID FRAME AND AN ERECTED DRILLING POSITION WHEREIN SAID LEGS EXTEND DOWNWARDLY TO ENGAGE THE GROUND AND SUPPORT SAID FRAME; SAID ONE LEG OF EACH PAIR OF LEGS INCLUDING AN UPPER ARM EXTENDING BEYOND ITS PIVOT TO SAID FRAME; AND SAID UPPER ARM BEING INTERCONNECTED TO SAID FRAME BY ONE OF SAID FLUID-OPERATED MEANS WHICH IS OPERATIVE TO SWING SAID ONE LEG ABOUT ITS PIVOT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |