US3917005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underground blast hole drilling machine
Assignee: Cannon & Associates
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Filing: 1974-03-20
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Granted: 1975-11-04
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Expires: 1994-03-20
Abstract
Abstract A mobile drilling machine in which a mobile support vehicle of the hydrostatic type provides the power supply for the majority of the hydraulic components on the drilling head frame, the latter being adjustable through two axis of pivot with its mounting on the head frame for any angle of drilling. The head frame mounts the drill head which advances and withdraws drill rods or a drill string in a drilling operation. It supplies the rotational torque to the drilling string and provides pneumatic air passage therethrough to a drill tool at the end of the drill string at which the major portion of the drilling force is applied. This isolates these drill forces from the drill head and head frame to minimize wear on the drilling apparatus.
Inventors
- 👤 Robert E Cannon
- 👤 Walter L Pehoski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:48
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/02; E21B7/024; E21B15/00; E21B15/04; E21B19/00; E21B19/08; E21B19/084; E21B3/00; E21B3/02; E21B3/022; E21B7/027
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
345 words
A mobile drilling machine comprising, a mobile steerable support vehicle, a head frame, means pivotally mounting the head frame on one end of the support vehicle at a point intermediate the extent of the head frame and through at least one pivot axis, a drill head slidably mounted in the head frame and adapted to be reciprocated from one end of the head frame and to the other, said drill head including flanged extremities at the edges of the same and bearing material mounted in the flanged extremities on three sides thereof and bearing against three surfaces of each side of the head frame for slidably mounting the drill head on the head frame, a drive shaft positioned on said one end of the said head frame and having a reversible drive motor and a speed reducer attached to one end of the shaft thereof, sprocket wheels mounted on the shaft, stud shafts positioned at the other end of the head frame and mounting sprocket wheels thereon, said reversible drive motor including a rotary hydraulic motor and a harmonic speed reducer connected thereto and coupling the rotary drive motor to the drive shaft to impart reduced and variable and reversible rotation to the drive shaft and the sprocket wheel thereon, drive chains positioned over the sprocket wheels at the ends of the head frame and connected to the drill head for reciprocating the same in the head frame, an offset drilling motor mounted on the drill head and adapted to mount and rotate the drill rod thereon to extend toward said other end of said head frame, a drill tool means having additional drive means mounted on the rod for providing impact action to a portion of the drill rod, and means connected to the head frame and the support vehicle for pivoting the head frame through varying drilling angles with respect to the support vehicle and for locking the head frame in the various pivoting positions to effect drilling through the drill motor and the motor driving the drive shaft on the head frame.
Claim 2
Dependent Claim
345 words
A mobile drilling machine comprising, a mobile steerable support vehicle, a head frame, means pivotally mounting the head frame on one end of the support vehicle at a point intermediate the extent of the head frame and through at least one pivot axis, a drill head slidably mounted in the head frame and adapted to be reciprocated from one end of the head frame and to the other, said drill head including flanged extremities at the edges of the same and bearing material mounted in the flanged extremities on three sides thereof and bearing against three surfaces of each side of the head frame for slidably mounting the drill head on the head frame, a drive shaft positioned on said one end of the said head frame and having a reversible drive motor and a speed reducer attached to one end of the shaft thereof, sprocket wheels mounted on the shaft, stud shafts positioned at the other end of the head frame and mounting sprocket wheels thereon, said reversible drive motor including a rotary hydraulic motor and a harmonic speed reducer connected thereto and coupling the rotary drive motor to the drive shaft to impart reduced and variable and reversible rotation to the drive shaft and the sprocket wheel thereon, drive chains positioned over the sprocket wheels at the ends of the head frame and connected to the drill head for reciprocating the same in the head frame, an offset drilling motor mounted on the drill head and adapted to mount and rotate the drill rod thereon to extend toward said other end of said head frame, a drill tool means having additional drive means mounted on the rod for providing impact action to a portion of the drill rod, and means connected to the head frame and the support vehicle for pivoting the head frame through varying drilling angles with respect to the support vehicle and for locking the head frame in the various pivoting positions to effect drilling through the drill motor and the motor driving the drive shaft on the head frame.
Claim 3
Dependent Claim
29 words
The mobile drilling machine of claim 1 and including stablizing jack means positioned at the four corners of the support vehicle for stablizing the same in a drilling operation.
Claim 4
Dependent Claim
44 words
The mobile drilling machine of claim 1 in which means is connected to the head frame and the support vehicle for pivoting the head frame includes a single hydraulic actuator for pivoting the head frame and an adjustable screw shaft for locking the same.
Claim 5
Dependent Claim
27 words
The mobile drilling machine of claim 2 in which the bearing material mounting the drill head on the head frame is composed of a plastic antifriction material.
Claim 6
Dependent Claim
49 words
The mobile drilling machine of claim 4 in which the separate drill tool means mounted on the drill rod includes a separate drilling tool powered through the drill rod and providing oscillating impact action to a portion of the drill tool defining the cutting surface of the drill tool.
Claim 7
Dependent Claim
117 words
The mobile drilling machine of claim 1 in which the harmonic speed reducer is a three part element including an outer part mounted through bracket means on the end of the head frame and including the drive shaft with the sprockets thereon being journaled in the mounting flange carrying the outer part and having an inner part mounted on an input shaft which is journaled in part on the outer part and in part on the drive shaft and having a rotary drive motor connected thereto with a flexible coupling which couples the outer and inner parts and is mechanically connected to the drive shaft for imparting rotational output of the speed reducer to the drive shaft.
Claim 8
Dependent Claim
44 words
The mobile drilling machine of claim 6 in which the flexible coupling and the drive shaft provide the journaling for the input shaft which is mounted cantilever fashion with the drive motor on the bracket means and coupled thereto by additional speed reducing gearing.
Claim 9
Dependent Claim
54 words
The mobile drilling machine of claim 7 in which the support vehicle includes a motive source for providing hydraulic fluid power to drive the support vehicle and to provide through flexible connections a source of motive power to the drill motor mounted on the drill head and the drive motor on the head frame.
Claim 10
Dependent Claim
19 words
The mobile drilling machine of claim 8 in which the mobile steerable support vehicle is a wheeled self-propelled unit.
Claim 11
Dependent Claim
57 words
The mobile drilling machine of claim 1 in which the means pivotally mounting the head frame on the support vehicle includes bracket means having a first pivot axis coupling the bracket means to the support vehicle about a first axis of pivot and a second pivot axis normal thereto coupling the head frame to the bracket means.
Claim 12
Dependent Claim
50 words
The mobile drilling machine of claim 10 in which the means on the head frame and support vehicle and connected there between for connecting the head frame includes separate motive means for pivoting the head frame about the pair of axis on the support vehicle and independent of one another.
Claim 13
Dependent Claim
41 words
The mobile drilling machine of claim 11 in which the two axis of pivots of the means pivotally mounting the head frame includes separate hydraulic actuators and means for locking the head frame in a pivoted position on the support vehicle.
Claim 14
Dependent Claim
91 words
The mobile drilling machine of claim 10 in which the means pivotally mounting the head frame on the support vehicle includes bracket means having a first pivot axis coupling the bracket means to support vehicle through a first axis of pivot anD a second pivot axis normal thereto coupling the head frame to the bracket means about the second pivot axis and including means on the bracket means and on the support vehicle for positioning the head frame about said first and second pivot axis selectively and independently of one another.
Claim 15
Dependent Claim
54 words
The mobile drilling machine of claim 13 in which the drill tool includes impact motor means mounted on the end of the drill rod and adapted to receive a source of motive power coupled through flexible connections from the support vehicle to the drill head and through hollow drill rod to the impact tool.
Claim 16
Dependent Claim
80 words
The mobile drilling machine of claim 1 in which the drill tool means mounted on the end of the drill bit includes a drilling tool having an impact motive means and in which the drill rods are hollow and the drill head includes a hollow coupler means adapted to be connected to a pneumatic source for powering the motive of the drill tool to provide the impact action of the end of the drill rod with the drill tool thereon.
Claim 17
Dependent Claim
77 words
The mobile drilling machine of claim 15 in which the steerable vehicle includes motive means driving a hydraulic pump with a self-contained hydraulic source and including hydraulic motors coupled to steerable wheels for driving the same and additional fluid connections connected to the drill motor and the drive motor on the drive shaft of the head frame, with a separate pneumatic source for imparting motive power to the impact means of the drill tool for drilling operation.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |