US3712385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mobile drilling rig having adjustable boom
Assignee: Envirotech Corp
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Filing: 1971-01-11
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Granted: 1973-01-23
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Expires: 1991-01-11
Abstract
Abstract The drilling rig comprises a boom, one end of which is arranged to be pivotally attached to the vehicle while the other end supports a drilling-head carrier arm tiltably mounted thereon. The carrier arm is also rotatably mounted about an axis normal to the axis of tilting. The boom is arranged to be pivoted in a vertical plane by at least one hydraulic piston-and-cylinder unit attached to a vehicle and connected to the hydraulic system. The carrier arm is tiltable over an arc of 180* by an endless drive transmission extending from one end of the boom to the other. In one embodiment the transmission includes a drive wheel located at or close to one end of the boom. The drilling rig may be attached to a buck-digger vehicle having a hydraulic actuating system for providing the necessary hydraulic source.
Inventors
- 👤 W Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:21
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/02; E21B7/025; E21B7/026; E21B7/027; E21B7/028
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
113 words
A drilling rig attachable to a bucket-digger vehicle equipped with a hydraulic actuating system, wherein the drilling rig comprises a boom one end of which is arranged to be pivotally attached to the vehicle while the other end supports a drillinghead carrier-arm tiltably mounted thereon and rotatable about an axis normal to the axis of tilting, wherein the boom is arranged to be pivoted in a vertical plane by at least one hydraulic piston-and-cylinder unit attachable to the vehicle and connectable to the hydraulic system, and an endless-drive transmission extending substantially from the one end to the other end of the boom for tilting the carrier arm over an arc of substantially 180*.
Claim 2
Dependent Claim
113 words
A drilling rig attachable to a bucket-digger vehicle equipped with a hydraulic actuating system, wherein the drilling rig comprises a boom one end of which is arranged to be pivotally attached to the vehicle while the other end supports a drillinghead carrier-arm tiltably mounted thereon and rotatable about an axis normal to the axis of tilting, wherein the boom is arranged to be pivoted in a vertical plane by at least one hydraulic piston-and-cylinder unit attachable to the vehicle and connectable to the hydraulic system, and an endless-drive transmission extending substantially from the one end to the other end of the boom for tilting the carrier arm over an arc of substantially 180*.
Claim 3
Dependent Claim
26 words
The drilling rig of claim 1 wherein said endless drive transmission includes a drive wheel located at or close to the one end of the boom.
Claim 4
Dependent Claim
22 words
A drilling rig according to claim 2, wherein said drive wheel is arranged to be rotated by a worm anD worm-wheel drive.
Claim 5
Dependent Claim
12 words
A drilling rig according to claim 3, wherein said worm is power-driven.
Claim 6
Dependent Claim
13 words
A drilling rig according to claim 4, wherein the power is hydraulic power.
Claim 7
Dependent Claim
39 words
A drilling rig according to claim 2 wherein said drive wheel is a sprocket connected by a chain to a driven sprocket fixed to a block tiltably mounted at the other end of the boom and supporting the carrier-arm.
Claim 8
Dependent Claim
32 words
A drilling rig according to claim 1 wherein the pivotal motion of the boom is effected by means of two hydraulic piston-and-cylinder units, one of which is detachably connected to the vehicle.
Claim 9
Dependent Claim
18 words
A drilling rig according to claim 7, including a means for pivoting the boom in a horizontal plane.
Claim 10
Dependent Claim
23 words
A drilling rig according to claim 8, wherein the means for pivoting the boom in a horizontal plane includes a hydraulic piston-and-cylinder unit.
Claim 11
Dependent Claim
56 words
A drilling rig according to claim 1 wherein said drilling-head carrier-arm includes a support fixed to one end thereof, wherein the support is mounted in a block for rotary motion about an axis normal to the longitudinal axis of said drilling-head carrier-arm, and wherein the block is tiltably mounted on the other end of said boom.
Claim 12
Dependent Claim
23 words
A drilling rig according to claim 10, wherein the rotary motion of the block and said drilling-head carrier-arm is effected under hydraulic power.
Claim 13
Dependent Claim
19 words
A drilling rig according to claim 11, wherein the hydraulic power is provided by a pair of piston-and-cylinder units.
Claim 14
Dependent Claim
99 words
A drilling rig according to claim 1 wherein the endless-drive transmission comprises a cross-head arranged to slide along the boom, a driven wheel fastened to the block, a guide wheel mounted at or close to the one end of the boom, a chain attached to the cross-head and the driven wheel and trained over the guide wheel, and a piston-and-cylinder unit attached to the boom and arranged to impart sliding motion to the cross-head, the arrangement being such that in operation actuation of the driving piston-and-cylinder unit and the resulting sliding motion of the cross-head will tilt the block.
Claim 15
Dependent Claim
17 words
A drilling rig according to claim 13 wherein a drill-head is slidably mounted on said drilling-head carrier-arm.
Claim 16
Dependent Claim
21 words
A drilling rig according to claim 14, wherein hydraulically actuated operated means are provided to impart sliding motion to the drill-head.
Claim 17
Dependent Claim
109 words
A drilling rig according to claim 15, wherein the actuating means comprise a further cross-head slidably mounted on the carrier-arm and arranged to be moved by a piston-and-cylinder unit mounted on the arm, two pulleys one rotatably mounted at or close to each end of the arm, and a rope fastened to the drill-head, trained over the pulleys and passing around a pulley on the further cross-head, and wherein the piston rod of the piston-and-cylinder unit is connected to the further cross-head, the arrangement being such that in operation actuation of the piston-and-cylinder unit and the resulting motion of the further cross-head will produce sliding motion of said drill-head.
Claim 18
Dependent Claim
47 words
A drilling rig according to claim 16, wherein the maximum sliding distance of said drill-head is a multiple of the total displacement of the piston of the carrier-arm piston-and-cylinder unit, and wherein the multiplication is effected by training the rope over the pulley on the further cross-head.
Claim 19
Dependent Claim
21 words
A drilling-rig according to claim 17 wherein said drill-head comprises a drill spindle arranged to be rotated by a hydraulic motor.
Claim 20
Dependent Claim
22 words
A drilling rig according to claim 1 wherein the bucket digger vehicle includes a bucket and means for tipping said bucket sideways.
References Cited (Backward Citations)
DE925281C
Cited
US3030713A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |