Patent US2440830A successfully refreshed from Google Patents.
Patent US3295800A successfully refreshed from Google Patents.
US3295800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Positioning device for rock drills
Assignee: Atlas Copco AB
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Filing: 1964-10-28
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Granted: 1967-01-03
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Expires: 1984-10-28
Abstract
No abstract record available.
Inventors
- 👤 Qvarnstrom Karl-Erik
- 👤 Skattman Carl Valfrid Rune
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:30
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/02; E21B15/00; E21B15/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A POSITIONING DEVICE FOR ROCK DRILLS FOR POSITIONING A ROCK DRILL INTO A PLURALITY OF ALTERNATIVE DRILLING POSITIONS ACCORDING TO A POLAR COORDINATE SYSTEM, SAID POSITIONING DEVICE COMPRISING A SUBSTRUCTURE HAVING COAXIAL SPACED APART JOURNALS THEREON, AN ELONGATED FRAME ROTATABLY MOUNTED IN SAID JOURNALS THE AXIS THEREOF BEING ALONG THE POLAR AXIS OF SAID COORDINATE SYSTEM, AN ELONGATED FEED SHELL FOR LONGITUDINALLY MOVABLY CARRYING A ROCK DRILL THEREON AND HAVING FEEDING MEANS THEREON FOR FEEDING AND RETRACTING A ROCK DRILL THEREON ALONG SAID FEED SHELL, A PARALLEL MOTION LINK SYSTEM LINKED BETWEEN SAID FEED SHELL AND SAID FRAME FOR PROVIDING TRANSLATORY MOTION OF SAID FEED SHELL RELATIVE TO SAID FRAME INTO A PLURALITY OF SELECTED PARALLEL POSITION BETWEEN SAID FEED SHELL THE RELATIVE LONGITUDINAL POSITION BETWEEN SAID FEED SHELL AND SAID FRAME, THE SAID LINK SYSTEM WITH THE SAID FEED SHELL DISPOSED THEREON EXTENDING RADIALLY FROM SAID FRAME ALONG A PLANE INCLUDING THE AXIS OF SAID FRAME WITH THE
Claim 2
Dependent Claim
159 words
A POSITIONING DEVICE FOR ROCK DRILLS FOR POSITIONING A ROCK DRILL INTO A PLURALITY OF ALTERNATIVE DRILLING POSITIONS ACCORDING TO A POLAR COORDINATE SYSTEM, SAID POSITIONING DEVICE COMPRISING A SUBSTRUCTURE HAVING COAXIAL SPACED APART JOURNALS THEREON, AN ELONGATED FRAME ROTATABLY MOUNTED IN SAID JOURNALS THE AXIS THEREOF BEING ALONG THE POLAR AXIS OF SAID COORDINATE SYSTEM, AN ELONGATED FEED SHELL FOR LONGITUDINALLY MOVABLY CARRYING A ROCK DRILL THEREON AND HAVING FEEDING MEANS THEREON FOR FEEDING AND RETRACTING A ROCK DRILL THEREON ALONG SAID FEED SHELL, A PARALLEL MOTION LINK SYSTEM LINKED BETWEEN SAID FEED SHELL AND SAID FRAME FOR PROVIDING TRANSLATORY MOTION OF SAID FEED SHELL RELATIVE TO SAID FRAME INTO A PLURALITY OF SELECTED PARALLEL POSITION BETWEEN SAID FEED SHELL THE RELATIVE LONGITUDINAL POSITION BETWEEN SAID FEED SHELL AND SAID FRAME, THE SAID LINK SYSTEM WITH THE SAID FEED SHELL DISPOSED THEREON EXTENDING RADIALLY FROM SAID FRAME ALONG A PLANE INCLUDING THE AXIS OF SAID FRAME WITH THE
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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |