US3762578A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill rod handling apparatus for raise drills
Assignee: Tamrock Canada Inc
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Filing: 1972-01-17
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Granted: 1973-10-02
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Expires: 1992-01-17
Abstract
Abstract The addition or removal of individual drill rods from the drill column of a raise drilling system is facilitated by a drill rod handling apparatus. The drill rod handling apparatus is attached to the support frame of the raise drill and includes arm means for moving individual drill rods into and out of the uppermost position in the drill column. Gripping elements are connected to the arm means for grasping and retaining an individual drill rod as it is being moved into and out of the drill column. The gripping elements include mechanical locking means for locking the gripping elements when the gripping elements are grasping and retaining an individual drill rod. A shock absorber means is connected to the arm means for absorbing the shock produced by vertical movement of an individual drill rod when the drill rod is contacted and engaged by the drill head of the raise drill.
Inventors
- 👤 R Cooper
- 👤 H Soule
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:55
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
209 words
A drill rod handling apparatus for an earth boring machine wherein the earth boring machine includes drilling means for supplying drilling force to a drill column and said drill column includes individual drill rods connected together end to end to form said drill column, comprising: arm means for moving an individual drill rod into and out of line with the drill column; a gripper means connected to said arm means for grasping a drill rod when said drill rod is being moved, said gripper means including a movable gripping arm; locking means connected to said gripper means for securely locking said gripper means in grasping relationship to said drill rod when said drill rod is being moved, said locking means including a first linking element connected to said movable gripping arm, a second linking element connected to said arm means, a hinge means for connecting said first linking element to said second linking element and means for moving said hinge means relative to said arm means thereby locking or unlocking said movable gripping arm on said drill rod, said means for moving said hinge means including a hydraulic cylinder; and shock absOrbing means connected to said arm means for absorbing shock when said drilling means contacts said drill rod.
Claim 2
Dependent Claim
209 words
A drill rod handling apparatus for an earth boring machine wherein the earth boring machine includes drilling means for supplying drilling force to a drill column and said drill column includes individual drill rods connected together end to end to form said drill column, comprising: arm means for moving an individual drill rod into and out of line with the drill column; a gripper means connected to said arm means for grasping a drill rod when said drill rod is being moved, said gripper means including a movable gripping arm; locking means connected to said gripper means for securely locking said gripper means in grasping relationship to said drill rod when said drill rod is being moved, said locking means including a first linking element connected to said movable gripping arm, a second linking element connected to said arm means, a hinge means for connecting said first linking element to said second linking element and means for moving said hinge means relative to said arm means thereby locking or unlocking said movable gripping arm on said drill rod, said means for moving said hinge means including a hydraulic cylinder; and shock absOrbing means connected to said arm means for absorbing shock when said drilling means contacts said drill rod.
Claim 3
Dependent Claim
217 words
A gripper for a drill rod handling apparatus that will grip and retain a drill rod thereby removably connecting the drill rod to an arm of the drill rod handling apparatus, comprising: a first gripping arm connected to said arm of the drill rod handling apparatus; a second gripping arm pivotally connected to said arm of the drill rod handling apparatus; means for moving said second gripping arm into contact with said drill rod and locking said second arm in engagement with said drill rod, said means for moving said second gripping arm into contact with said drill rod and locking said second arm in engagement with said drill rod including a first linking element pivotally connected to said second gripping arm, a second linking element pivotally connected to said arm of the drill rod handling apparatus and hinge means for connecting said first linking element to said second linking element; means for moving said hinge means thereby locking or unlocking said second arm in engagement with said drill rod, said means for moving said hinge means being a hydraulic cylinder; a movable pin connecting said second linking element to said arm of the drill rod handling apparatus, and a positioning element for moving said movable pin relative to the arm of said drill rod handling apparatus.
Claim 4
Dependent Claim
217 words
A gripper for a drill rod handling apparatus that will grip and retain a drill rod thereby removably connecting the drill rod to an arm of the drill rod handling apparatus, comprising: a first gripping arm connected to said arm of the drill rod handling apparatus; a second gripping arm pivotally connected to said arm of the drill rod handling apparatus; means for moving said second gripping arm into contact with said drill rod and locking said second arm in engagement with said drill rod, said means for moving said second gripping arm into contact with said drill rod and locking said second arm in engagement with said drill rod including a first linking element pivotally connected to said second gripping arm, a second linking element pivotally connected to said arm of the drill rod handling apparatus and hinge means for connecting said first linking element to said second linking element; means for moving said hinge means thereby locking or unlocking said second arm in engagement with said drill rod, said means for moving said hinge means being a hydraulic cylinder; a movable pin connecting said second linking element to said arm of the drill rod handling apparatus, and a positioning element for moving said movable pin relative to the arm of said drill rod handling apparatus.
Claim 5
Dependent Claim
158 words
A drill rod handling apparatus for an earth boring machine, said earth boring machine having a support frame and drilling means mounted to travel along said support frame for supplying drilling force to a drill column wherein said drill column includes individual drill rods connected together end to end with the first drill rod of the drill column adapted to be connected to said drilling means, comprising: arm means connected to said support frame for moving an individual drill rod into and out of line with the drill column said arm means including a first arm and a second arm; gripping means connected to said arm means for grasping and retaining the drill rod when said drill rod is being moved; and shock absorbing means connected to said arm means for absorbing shock when said drilling means contacts said drill rod, said shock absorbing means including a shock absorber positioned between said first arm and said second arm.
Claim 6
Dependent Claim
158 words
A drill rod handling apparatus for an earth boring machine, said earth boring machine having a support frame and drilling means mounted to travel along said support frame for supplying drilling force to a drill column wherein said drill column includes individual drill rods connected together end to end with the first drill rod of the drill column adapted to be connected to said drilling means, comprising: arm means connected to said support frame for moving an individual drill rod into and out of line with the drill column said arm means including a first arm and a second arm; gripping means connected to said arm means for grasping and retaining the drill rod when said drill rod is being moved; and shock absorbing means connected to said arm means for absorbing shock when said drilling means contacts said drill rod, said shock absorbing means including a shock absorber positioned between said first arm and said second arm.
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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |