US3263573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feeding device working in stepwise manner
Assignee: Atlas Copco AB
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Filing: 1964-04-13
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Granted: 1966-08-02
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Expires: 1984-04-13
Abstract
No abstract record available.
Inventors
- 👤 Gosta E Fogelstrom
- 👤 Carlsson Osten Erik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:38
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/08; E21B19/086
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
313 words
A FEEDING DEVICE FOR ROCK DRILLS COMPRISING AN ELONGGATED FEED BAR FOR SLIDABLY SUPPORTING A ROCK DRILL THEREALONG, A PAIR OF LOCKING MEMBERS MOVABLY MOUNTED ON SAID FEED BAR, ADJUSTABLE MEANS ON SAID LOCKING MEMBERS PROVIDING IN A FIRST POSITION OF ADJUSTMENT UNI-DIRECTIONAL LOCKING AGAINST SAID FEED BAR TO ALLOW FORWARD AND TO PREVENT REARWARD MOVEMENT OF SAID MEMBERS ALONG SAID FEED BAR AND IN A SECOND POSITION OF ADJUSTMENT UNIDIRECTIONAL LOCKING AGAINST SAID FEED BAR TO ALLOW REARWARD AND TO PREVENT FORWARD MOVEMENT OF SAID MEMBERS, A PRESSURE FLUID OPERATED EXTENSIBLE AND CONTACTABLE FEED MOTOR CONNECTED TO SAID DRILL AND MOVABLE THEREWITH, SAID MOTOR INCLUDING COOPERATING CYLINDER AND PISTON ELEMENTS COUPLED ONE TO EACH OF SAID LOCKING MEMBERS FOR MOVING SAID MEMBERS AND THEREBY SAID ROCK DRILL STEP BY STEP ALONG SAID FEED BAR BY SUCCESSIVE EXTENSIONS AND CONTACTIONS OF SAID MOTOR IN THE DIRECTION DEFINED BY THE POSITION OF ADJUSTMENT OF SAID ADJUSTABLE MEANS, MEANS FOR AUTOMATICALLY CONTROLLING THE DELIVERY OF PRESSURE FLUID TO SAID MOTOR FOR CONTINUOUSLY EXTENDING AND CONTRACTING SAID CYLINDER AND PISTON ELEMENTS, FIRST AND SECOND REVERSING ELEMENTS MOVABLY MOUNTED ON SAID MOTOR EACH ADJACENT ONE OF SAID LOCKING MEMBERS FOR MOVEMENT BETWEEN A FORWARD AND A REARWARD FEED POSITION AND HAVING MEANS THEREON FOR MOVING SAID ADJUSTABLE MEANS FROM THEIR FIRST TO THEIR SECOND POSITION OF ADJUSTMENT AS A RESULT OF SAID REVERSING ELEMENTS BEING MOVED FROM SAID FORWARD TO SAID REARWARD FEED POSITION, SAID FIRST REVERSING ELEMENT BEING JOURNALLED FOR MOVEMENT FROM SAID FORWARD TO SAID REARWARD FEED POSITION INDEPENDENTLY OF SAID SECOND REVERSING ELEMENT FOR PURPOSES OF RENDERING SAID FEED MOTOR INACTIVE BY CAUSING OPPOSITE LOCKING ACTION OF SAID MEMBERS, AND COUPLING MEANS CONNECTED TO SAID SECOND REVERSING ELEMENT AND ENGAGEABLE WITH SAID FIRST REVERSING ELEMENT FOR MOVING THE LATTER FROM SAID FORWARD TO SAID REARWARD FEED POSITION IN UNISON WITH SAID SECOND REVERSING ELEMENT.
Claim 2
Dependent Claim
313 words
A FEEDING DEVICE FOR ROCK DRILLS COMPRISING AN ELONGGATED FEED BAR FOR SLIDABLY SUPPORTING A ROCK DRILL THEREALONG, A PAIR OF LOCKING MEMBERS MOVABLY MOUNTED ON SAID FEED BAR, ADJUSTABLE MEANS ON SAID LOCKING MEMBERS PROVIDING IN A FIRST POSITION OF ADJUSTMENT UNI-DIRECTIONAL LOCKING AGAINST SAID FEED BAR TO ALLOW FORWARD AND TO PREVENT REARWARD MOVEMENT OF SAID MEMBERS ALONG SAID FEED BAR AND IN A SECOND POSITION OF ADJUSTMENT UNIDIRECTIONAL LOCKING AGAINST SAID FEED BAR TO ALLOW REARWARD AND TO PREVENT FORWARD MOVEMENT OF SAID MEMBERS, A PRESSURE FLUID OPERATED EXTENSIBLE AND CONTACTABLE FEED MOTOR CONNECTED TO SAID DRILL AND MOVABLE THEREWITH, SAID MOTOR INCLUDING COOPERATING CYLINDER AND PISTON ELEMENTS COUPLED ONE TO EACH OF SAID LOCKING MEMBERS FOR MOVING SAID MEMBERS AND THEREBY SAID ROCK DRILL STEP BY STEP ALONG SAID FEED BAR BY SUCCESSIVE EXTENSIONS AND CONTACTIONS OF SAID MOTOR IN THE DIRECTION DEFINED BY THE POSITION OF ADJUSTMENT OF SAID ADJUSTABLE MEANS, MEANS FOR AUTOMATICALLY CONTROLLING THE DELIVERY OF PRESSURE FLUID TO SAID MOTOR FOR CONTINUOUSLY EXTENDING AND CONTRACTING SAID CYLINDER AND PISTON ELEMENTS, FIRST AND SECOND REVERSING ELEMENTS MOVABLY MOUNTED ON SAID MOTOR EACH ADJACENT ONE OF SAID LOCKING MEMBERS FOR MOVEMENT BETWEEN A FORWARD AND A REARWARD FEED POSITION AND HAVING MEANS THEREON FOR MOVING SAID ADJUSTABLE MEANS FROM THEIR FIRST TO THEIR SECOND POSITION OF ADJUSTMENT AS A RESULT OF SAID REVERSING ELEMENTS BEING MOVED FROM SAID FORWARD TO SAID REARWARD FEED POSITION, SAID FIRST REVERSING ELEMENT BEING JOURNALLED FOR MOVEMENT FROM SAID FORWARD TO SAID REARWARD FEED POSITION INDEPENDENTLY OF SAID SECOND REVERSING ELEMENT FOR PURPOSES OF RENDERING SAID FEED MOTOR INACTIVE BY CAUSING OPPOSITE LOCKING ACTION OF SAID MEMBERS, AND COUPLING MEANS CONNECTED TO SAID SECOND REVERSING ELEMENT AND ENGAGEABLE WITH SAID FIRST REVERSING ELEMENT FOR MOVING THE LATTER FROM SAID FORWARD TO SAID REARWARD FEED POSITION IN UNISON WITH SAID SECOND REVERSING ELEMENT.
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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |